/* Logix AI Edu — koyu, teknik, canlı vurgular.
   Renk sistemi: indigo/menekşe ana, camgöbeği ikincil, kehribar dikkat. */

:root {
  --bg:        #0B0D17;
  --bg-2:      #0F1220;
  --surface:   #151932;
  --surface-2: #1B2040;
  --surface-3: #222850;
  --line:      #2A3059;
  --line-2:    #3A4272;

  --ink:    #EEF0FB;
  --body:   #C3C8E6;
  --muted:  #8E95C0;
  --faint:  #666E9C;

  --iris:   #6366F1;
  --iris-2: #8B5CF6;
  --cyan:   #22D3EE;
  --amber:  #FBBF24;
  --ok:     #34D399;
  --danger: #F87171;
  --pink:   #F472B6;

  --r:    14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --sh:    0 2px 14px rgba(0,0,0,.32);
  --sh-lg: 0 26px 70px -26px rgba(0,0,0,.85);
  --ease: cubic-bezier(.4, 0, .2, 1);
  --spring: cubic-bezier(.34, 1.4, .5, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg); color: var(--body);
  font: 400 15.5px/1.65 "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.022em; line-height: 1.22; color: var(--ink); }
p { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
::selection { background: rgba(139,92,246,.35); }

/* İnce kaydırma çubuğu */
* { scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 99px; }
*::-webkit-scrollbar-track { background: transparent; }

/* ── İkonlar ───────────────────────────────────────────── */
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ic {
  width: 1.25em; height: 1.25em; flex-shrink: 0; vertical-align: -.24em;
  fill: none; stroke: currentColor; stroke-width: 1.9;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ── Arka plan ─────────────────────────────────────────── */
.grid-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(99,102,241,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,.055) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 35%, transparent 78%);
}
.glow { position: fixed; border-radius: 50%; filter: blur(130px); z-index: 0; pointer-events: none; }
.g1 { width: 46vw; height: 46vw; left: -14vw; top: -18vw; background: rgba(99,102,241,.30); }
.g2 { width: 40vw; height: 40vw; right: -12vw; top: 22vh; background: rgba(34,211,238,.16); }

/* ── Marka ─────────────────────────────────────────────── */
.brand { display: inline-flex; align-items: center; gap: 10px; background: none; border: 0;
         cursor: pointer; padding: 0; }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 11px; background: linear-gradient(140deg, var(--iris), var(--iris-2));
  box-shadow: 0 8px 22px -8px rgba(99,102,241,.95), inset 0 1px 0 rgba(255,255,255,.25);
}
.brand-mark svg { width: 18px; height: 18px; fill: #fff; stroke: #fff; stroke-width: 1.6;
                  stroke-linejoin: round; }
.brand-txt { font-size: 17px; font-weight: 750; color: var(--ink); letter-spacing: -.03em; }
.brand-txt b { color: var(--cyan); font-weight: 750; }
.brand-txt i { font-style: normal; color: var(--muted); font-weight: 600; }
.brand-sm .brand-mark { width: 30px; height: 30px; border-radius: 9px; }
.brand-sm .brand-txt { font-size: 15.5px; }

/* ── Giriş ─────────────────────────────────────────────── */
.login { position: relative; z-index: 1; min-height: 100dvh; display: grid; place-items: center; padding: 28px 20px; }
.login-shell {
  width: 100%; max-width: 980px; display: grid; grid-template-columns: 1.08fr .92fr;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  overflow: hidden; box-shadow: var(--sh-lg);
  animation: rise .5s var(--spring) both;
}
@keyframes rise { from { opacity: 0; transform: translateY(16px) scale(.99); } to { opacity: 1; transform: none; } }

.login-art {
  position: relative; overflow: hidden; padding: 40px 36px 36px;
  display: flex; flex-direction: column; justify-content: flex-end;
  background: linear-gradient(155deg, #232852 0%, #171B36 55%, #10132A 100%);
}
.login-art::after {
  content: ""; position: absolute; right: -25%; top: -25%; width: 75%; height: 65%;
  border-radius: 50%; background: radial-gradient(circle, rgba(34,211,238,.4), transparent 70%);
  filter: blur(60px);
}
.la-net { position: absolute; inset: 30px 30px auto 30px; height: 210px; }
.la-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.la-lines path { fill: none; stroke: rgba(139,92,246,.45); stroke-width: 1.4;
                 stroke-dasharray: 5 7; animation: dash 22s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -240; } }
.node {
  position: absolute; width: 12px; height: 12px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 16px 3px rgba(34,211,238,.75);
  animation: nodePulse 3.4s var(--ease) infinite;
}
.n1 { left: 16%; top: 16%; } .n2 { left: 47%; top: 40%; width: 17px; height: 17px;
      background: var(--iris-2); box-shadow: 0 0 22px 5px rgba(139,92,246,.8); }
.n3 { left: 78%; top: 16%; } .n4 { left: 24%; top: 72%; }
.n5 { left: 71%; top: 72%; } .n6 { left: 47%; top: 8%; width: 8px; height: 8px; background: var(--amber);
      box-shadow: 0 0 14px 3px rgba(251,191,36,.7); }
.n2 { animation-delay: .5s; } .n3 { animation-delay: 1s; } .n4 { animation-delay: 1.5s; }
.n5 { animation-delay: 2s; } .n6 { animation-delay: 2.5s; }
@keyframes nodePulse { 0%,100% { transform: scale(1); opacity: .85; } 50% { transform: scale(1.28); opacity: 1; } }

.la-copy { position: relative; margin-top: 250px; }
.la-tag {
  display: inline-block; font-size: 10px; font-weight: 800; letter-spacing: .16em;
  color: var(--cyan); background: rgba(34,211,238,.12); border: 1px solid rgba(34,211,238,.3);
  padding: 5px 11px; border-radius: 99px; margin-bottom: 16px;
}
.la-copy h2 { font-size: 27px; line-height: 1.26; color: #fff; }
.la-copy ul { list-style: none; margin: 20px 0 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.la-copy li { position: relative; padding-left: 24px; font-size: 13.5px; color: rgba(238,240,251,.72); }
.la-copy li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 12px; height: 12px;
  border-radius: 4px; background: linear-gradient(140deg, var(--cyan), var(--iris-2));
}

.login-panel { display: grid; place-items: center; padding: 44px 42px; background: var(--surface); }
.login-panel form { width: 100%; max-width: 330px; }
.login-panel .brand { margin-bottom: 28px; }
.login-panel h1 { font-size: 25px; }
.sub { color: var(--muted); font-size: 14px; margin: 8px 0 26px; }
.login-foot { margin-top: 22px; text-align: center; font-size: 9.5px; font-weight: 700;
              letter-spacing: .13em; color: var(--faint); }

@media (max-width: 880px) {
  .login-shell { grid-template-columns: 1fr; max-width: 440px; }
  .login-art { display: none; }
  .login-panel { padding: 36px 28px 32px; }
}

/* ── Form ──────────────────────────────────────────────── */
input[type=text], input[type=email], input[type=password], input[type=number],
select, textarea {
  width: 100%; padding: 14px 16px;
  background: var(--bg-2); color: var(--ink);
  border: 1.5px solid var(--line); border-radius: var(--r); outline: none;
  transition: border-color .18s var(--ease), box-shadow .22s var(--ease), background .18s;
}
textarea { resize: vertical; min-height: 100px; line-height: 1.7; }
input:hover:not(:focus), select:hover:not(:focus), textarea:hover:not(:focus) { border-color: var(--line-2); }
input:focus, select:focus, textarea:focus {
  border-color: var(--iris); background: #0D1020;
  box-shadow: 0 0 0 4px rgba(99,102,241,.16);
}
input::placeholder, textarea::placeholder { color: var(--faint); }
select {
  appearance: none; -webkit-appearance: none; padding-right: 42px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%238E95C0' stroke-width='2.2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center;
}

.field { display: block; margin-bottom: 18px; }
.field > span:first-child { display: block; font-size: 11px; font-weight: 750; color: var(--muted);
  letter-spacing: .07em; text-transform: uppercase; margin-bottom: 8px; }

.fl { position: relative; display: block; margin-bottom: 16px; }
.fl > input, .fl > select, .fl > textarea { padding: 22px 16px 9px; }
.fl > span {
  position: absolute; left: 17px; top: 15px; pointer-events: none;
  font-size: 14.5px; color: var(--muted); transform-origin: left top;
  transition: transform .18s var(--ease), color .18s var(--ease);
}
.fl > input:focus ~ span, .fl > input:not(:placeholder-shown) ~ span,
.fl > textarea:focus ~ span, .fl > textarea:not(:placeholder-shown) ~ span,
.fl > select ~ span {
  transform: translateY(-9px) scale(.76); color: var(--iris-2); font-weight: 700; letter-spacing: .04em;
}
.fl > input::placeholder, .fl > textarea::placeholder { opacity: 0; }
.fl > input:focus::placeholder, .fl > textarea:focus::placeholder { opacity: 1; }
.fl-pw > input { padding-right: 84px; }
.pw-toggle { position: absolute; right: 7px; top: 50%; transform: translateY(-50%);
  background: var(--surface-2); border: 1px solid var(--line); color: var(--muted);
  font-size: 11.5px; font-weight: 700; padding: 7px 12px; border-radius: 99px; cursor: pointer;
  transition: all .16s var(--ease); }
.pw-toggle:hover { color: var(--cyan); border-color: var(--cyan); }

.form-error { color: #FFC7C7; background: rgba(248,113,113,.12); border: 1px solid rgba(248,113,113,.35);
  padding: 11px 13px; border-radius: 12px; font-size: 13.5px; margin-bottom: 14px; }

/* ── Düğmeler ──────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 12px; border: 1.5px solid transparent; cursor: pointer;
  font-size: 14px; font-weight: 650; white-space: nowrap;
  transition: transform .16s var(--spring), box-shadow .2s var(--ease),
              background .18s var(--ease), border-color .18s var(--ease), color .18s;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: scale(.97); }
.btn-lg { padding: 15px 24px; font-size: 15px; border-radius: 14px; }
.btn-sm { padding: 8px 13px; font-size: 12.5px; border-radius: 10px; }
.btn-block { width: 100%; }

.btn-primary { background: linear-gradient(135deg, var(--iris), var(--iris-2)); color: #fff;
               box-shadow: 0 10px 26px -10px rgba(99,102,241,.95); }
.btn-primary:hover:not(:disabled) { box-shadow: 0 14px 34px -10px rgba(139,92,246,1); transform: translateY(-1px); }
.btn-cyan { background: linear-gradient(135deg, var(--cyan), #0EA5C6); color: #05202A;
            box-shadow: 0 10px 26px -10px rgba(34,211,238,.9); }
.btn-cyan:hover:not(:disabled) { transform: translateY(-1px); }
.btn-soft { background: var(--surface-2); border-color: var(--line); color: var(--body); }
.btn-soft:hover:not(:disabled) { border-color: var(--line-2); background: var(--surface-3); color: var(--ink); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-ghost:hover:not(:disabled) { color: var(--ink); background: var(--surface-2); }
.btn-danger { background: rgba(248,113,113,.14); border-color: rgba(248,113,113,.4); color: #FFB4B4; }
.btn-danger:hover:not(:disabled) { background: rgba(248,113,113,.24); }

.spin { display: inline-block; width: 15px; height: 15px; border-radius: 50%;
        border: 2px solid rgba(255,255,255,.28); border-top-color: #fff;
        animation: spin .75s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Üst çubuk ─────────────────────────────────────────── */
.app { position: relative; z-index: 1; min-height: 100dvh; display: flex; flex-direction: column; }
.topnav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 20px; padding: 12px 22px;
  background: rgba(11,13,23,.82); backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--line);
}
.tabs { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.tab {
  padding: 8px 15px; border-radius: 10px; border: 0; background: none; cursor: pointer;
  font-size: 13.5px; font-weight: 620; color: var(--muted); white-space: nowrap;
  transition: all .16s var(--ease);
}
.tab:hover { color: var(--ink); background: var(--surface-2); }
.tab.on { color: var(--ink); background: var(--surface-3);
          box-shadow: inset 0 0 0 1px var(--line-2); }
.topnav-end { display: flex; align-items: center; gap: 10px; }
.ai-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
          box-shadow: 0 0 0 3px rgba(52,211,153,.18); }
.ai-dot.off { background: var(--faint); box-shadow: 0 0 0 3px rgba(102,110,156,.18); }
.who {
  display: flex; align-items: center; gap: 9px; padding: 5px 12px 5px 5px;
  background: var(--surface-2); border: 1.5px solid var(--line); border-radius: 99px;
  cursor: pointer; font-size: 13px; font-weight: 620; color: var(--body);
  transition: all .16s var(--ease);
}
.who:hover { border-color: var(--iris); color: var(--ink); }
.who .av { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center;
           font-size: 11px; font-weight: 750; color: #fff;
           background: linear-gradient(140deg, var(--iris), var(--iris-2)); }
.who span:not(.av) { max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.btn-out {
  display: grid; place-items: center; width: 38px; height: 38px; flex-shrink: 0;
  background: var(--surface-2); border: 1.5px solid var(--line); border-radius: 11px;
  color: var(--muted); cursor: pointer; transition: all .18s var(--ease);
}
.btn-out .ic { width: 18px; height: 18px; }
.btn-out:hover { color: var(--danger); border-color: rgba(248,113,113,.5); background: rgba(248,113,113,.1); }

.view { flex: 1; padding: 30px 24px 70px; }
.wrap { max-width: 1180px; margin: 0 auto; }
.wrap-wide { max-width: 1560px; margin: 0 auto; }

@media (max-width: 900px) {
  .topnav { padding: 10px 14px; gap: 12px; flex-wrap: wrap; }
  .tabs { order: 3; width: 100%; }
  .who span:not(.av) { display: none; }
  .view { padding: 22px 14px 60px; }
}

/* ── Kartlar ───────────────────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--sh);
}
.card-body { padding: 22px; }
.grid { display: grid; gap: 16px; }
.cols-2 { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.cols-3 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.hstack { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.mb { margin-bottom: 20px; } .mt { margin-top: 18px; }
.muted { color: var(--muted); } .small { font-size: 13px; } .sm { font-size: 12.5px; }

.pill { display: inline-flex; align-items: center; gap: 5px; padding: 4px 11px; border-radius: 99px;
        font-size: 11.5px; font-weight: 700; border: 1px solid var(--line-2);
        background: var(--surface-2); color: var(--muted); }
.pill.iris  { background: rgba(99,102,241,.16); border-color: rgba(99,102,241,.45); color: #B9BBFF; }
.pill.cyan  { background: rgba(34,211,238,.14); border-color: rgba(34,211,238,.4); color: #9BEBF8; }
.pill.ok    { background: rgba(52,211,153,.14); border-color: rgba(52,211,153,.4); color: #9DECCD; }
.pill.amber { background: rgba(251,191,36,.14); border-color: rgba(251,191,36,.4); color: #FCDF9A; }
.pill.red   { background: rgba(248,113,113,.14); border-color: rgba(248,113,113,.4); color: #FFB4B4; }

.empty { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty .ico { display: grid; place-items: center; width: 66px; height: 66px; margin: 0 auto 16px;
              border-radius: 20px; color: var(--iris-2); background: rgba(99,102,241,.13);
              border: 1px solid rgba(99,102,241,.3); }
.empty .ico .ic { width: 32px; height: 32px; }
.empty h4 { font-size: 17px; margin-bottom: 6px; }

/* ── Bildirim ──────────────────────────────────────────── */
.toasts { position: fixed; right: 20px; bottom: 20px; z-index: 300;
          display: flex; flex-direction: column; gap: 10px; }
.toast {
  padding: 13px 17px; border-radius: 13px; font-size: 13.5px; font-weight: 550; max-width: 380px;
  background: var(--surface-3); border: 1px solid var(--line-2); color: var(--ink);
  box-shadow: var(--sh-lg); animation: toastIn .3s var(--spring) both;
}
.toast.err { background: rgba(70,24,32,.96); border-color: rgba(248,113,113,.5); color: #FFD4D4; }
.toast.ok  { background: rgba(15,58,45,.96); border-color: rgba(52,211,153,.5); color: #C4F5E3; }
@keyframes toastIn { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: none; } }

/* ── Modal ─────────────────────────────────────────────── */
.modal-backdrop { position: fixed; inset: 0; z-index: 100; background: rgba(5,6,14,.72);
  backdrop-filter: blur(6px); display: grid; place-items: center; padding: 22px; overflow-y: auto;
  animation: fadein .2s var(--ease) both; }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }
.modal { width: 100%; max-width: 600px; max-height: calc(100dvh - 44px); display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--r-xl);
  box-shadow: var(--sh-lg); animation: rise .28s var(--spring) both; }
.modal.wide { max-width: 900px; }
.modal-head { display: flex; align-items: center; gap: 12px; padding: 20px 24px; border-bottom: 1px solid var(--line); }
.modal-head h3 { flex: 1; font-size: 17px; }
.modal-body { padding: 22px 24px; overflow-y: auto; flex: 1; }
.modal-foot { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap;
              padding: 16px 24px; border-top: 1px solid var(--line); }
.x-btn { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px;
         background: var(--surface-2); border: 1px solid var(--line); color: var(--muted); cursor: pointer; }
.x-btn:hover { color: var(--ink); border-color: var(--line-2); }

/* ── Panel ─────────────────────────────────────────────── */

.hero {
  position: relative; overflow: hidden; padding: 34px 34px 30px; margin-bottom: 24px;
  border-radius: var(--r-xl); border: 1px solid var(--line);
  background: linear-gradient(140deg, #1D2247 0%, #151932 55%, #10132A 100%);
}
.hero::after { content: ""; position: absolute; right: -12%; top: -45%; width: 45%; height: 150%;
  border-radius: 50%; background: radial-gradient(circle, rgba(139,92,246,.34), transparent 70%);
  filter: blur(50px); }
.hero h1 { position: relative; font-size: 28px; }
.hero p { position: relative; color: var(--muted); margin-top: 8px; max-width: 620px; }
.hero-row { position: relative; display: flex; gap: 26px; flex-wrap: wrap; margin-top: 24px; }
.stat b { display: block; font-size: 26px; color: var(--ink); font-variant-numeric: tabular-nums;
          line-height: 1.1; }
.stat span { display: block; font-size: 11px; font-weight: 750; letter-spacing: .09em;
             text-transform: uppercase; color: var(--faint); margin-top: 5px; }

.prog-bar { height: 8px; border-radius: 99px; background: var(--surface-3); overflow: hidden;
            margin-top: 18px; position: relative; }
.prog-bar span { display: block; height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--iris), var(--iris-2) 50%, var(--cyan));
  box-shadow: 0 0 14px rgba(139,92,246,.7); transition: width .5s var(--ease); }

/* ── Program haritası ──────────────────────────────────── */

.gun {
  border: 1px solid var(--line); border-radius: var(--r-xl); overflow: hidden;
  background: var(--surface); margin-bottom: 20px;
}
.gun-head { display: flex; align-items: center; gap: 14px; padding: 20px 24px;
  background: linear-gradient(120deg, #1C2145, var(--surface) 70%); border-bottom: 1px solid var(--line); }
.gun-no {
  display: grid; place-items: center; width: 44px; height: 44px; flex-shrink: 0; border-radius: 13px;
  background: linear-gradient(140deg, var(--iris), var(--iris-2)); color: #fff;
  box-shadow: 0 8px 20px -8px rgba(99,102,241,.9);
}
.gun-no .ic { width: 22px; height: 22px; }
.gun-head h3 { flex: 1; font-size: 18px; }
.gun-head h3 small { display: block; font-size: 12.5px; font-weight: 500; color: var(--muted);
                     margin-top: 4px; letter-spacing: 0; }

.ders-list { padding: 10px; }
.ders {
  display: flex; align-items: center; gap: 14px; width: 100%; text-align: left; cursor: pointer;
  padding: 14px 16px; margin-bottom: 6px; border-radius: var(--r);
  background: transparent; border: 1px solid transparent;
  transition: all .18s var(--ease);
}
.ders:hover { background: var(--surface-2); border-color: var(--line); transform: translateX(3px); }
.ders-no {
  display: grid; place-items: center; width: 40px; height: 40px; flex-shrink: 0; border-radius: 12px;
  background: var(--surface-2); border: 1.5px solid var(--line);
  font-size: 12.5px; font-weight: 750; color: var(--muted); font-variant-numeric: tabular-nums;
}
.ders.bitti .ders-no { background: rgba(52,211,153,.14); border-color: rgba(52,211,153,.45); color: var(--ok); }
.ders.bitti .ders-no .ic { width: 18px; height: 18px; }
.ders-info { flex: 1; min-width: 0; }
.ders-info b { display: block; font-size: 15px; color: var(--ink); font-weight: 650; }
.ders-info span { display: block; font-size: 12.5px; color: var(--muted); margin-top: 3px; }
.ders-end { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.ders-end .ic { width: 17px; height: 17px; color: var(--faint); }
.ders:hover .ders-end .ic { color: var(--iris-2); }

/* ── Ders / slayt görünümü ─────────────────────────────── */

.lesson-top {
  display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap;
}
.lesson-top h1 { font-size: 21px; flex: 1; min-width: 200px; }
.slide-bar { display: flex; gap: 4px; margin-bottom: 22px; }
.slide-dot {
  flex: 1; height: 4px; border-radius: 99px; background: var(--surface-3); cursor: pointer;
  border: 0; padding: 0; transition: background .25s var(--ease), transform .16s var(--spring);
}
.slide-dot:hover { transform: scaleY(2); }
.slide-dot.gecti { background: var(--line-2); }
.slide-dot.now { background: linear-gradient(90deg, var(--iris), var(--cyan));
                 box-shadow: 0 0 10px rgba(99,102,241,.8); }

.slide {
  position: relative; min-height: 400px; padding: 40px 44px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  box-shadow: var(--sh);
}
.slide.in-fwd  { animation: slideFwd .32s var(--ease) both; }
.slide.in-back { animation: slideBack .32s var(--ease) both; }
@keyframes slideFwd  { from { opacity: 0; transform: translateX(26px); } to { opacity: 1; transform: none; } }
@keyframes slideBack { from { opacity: 0; transform: translateX(-26px); } to { opacity: 1; transform: none; } }

.slide-kind { position: absolute; top: 18px; right: 22px; font-size: 9.5px; font-weight: 800;
              letter-spacing: .14em; color: var(--faint); text-transform: uppercase; }
.slide h2 { font-size: 27px; margin-bottom: 6px; }
.slide .alt { color: var(--cyan); font-size: 14.5px; font-weight: 600; margin-bottom: 24px; }
.slide h2 + .maddeler { margin-top: 24px; }

.maddeler { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 15px; }
.maddeler li { position: relative; padding-left: 30px; font-size: 16px; line-height: 1.72; color: var(--body); }
.maddeler li::before {
  content: ""; position: absolute; left: 0; top: 10px; width: 9px; height: 9px; border-radius: 3px;
  background: linear-gradient(140deg, var(--iris-2), var(--cyan));
}
.maddeler b, .slide-not b { color: var(--ink); font-weight: 700; }
.maddeler em { color: var(--amber); font-style: normal; font-weight: 600; }

.slide-not {
  margin-top: 26px; padding: 14px 18px; border-radius: 14px; font-size: 13.5px; line-height: 1.7;
  background: rgba(251,191,36,.08); border-left: 3px solid var(--amber); color: #E8D9AE;
}

/* kod */
.kod {
  margin-top: 22px; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--line-2); background: #0A0C18;
}
.kod-head { display: flex; align-items: center; gap: 8px; padding: 10px 16px;
  background: var(--surface-2); border-bottom: 1px solid var(--line); }
.kod-head .dots { display: flex; gap: 6px; }
.kod-head .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-2); }
.kod-head .dots i:first-child { background: #F87171; }
.kod-head .dots i:nth-child(2) { background: #FBBF24; }
.kod-head .dots i:nth-child(3) { background: #34D399; }
.kod-head b { flex: 1; font-size: 11.5px; font-weight: 700; letter-spacing: .1em;
              text-transform: uppercase; color: var(--faint); }
.kod pre { margin: 0; padding: 20px; overflow-x: auto;
  font: 500 13.5px/1.75 "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  color: #CFD6F5; }
.kod .k-anahtar { color: var(--pink); } .kod .k-metin { color: #A5E8B0; }
.kod .k-yorum { color: var(--faint); font-style: italic; } .kod .k-sayi { color: var(--amber); }
.kod .k-alan { color: var(--cyan); }

/* karşılaştırma */
.karsi { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 24px; }
.karsi-kart { padding: 22px; border-radius: 18px; border: 1.5px solid var(--line); background: var(--bg-2); }
.karsi-kart h4 { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 16px; }
.karsi-kart ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 11px; }
.karsi-kart li { position: relative; padding-left: 22px; font-size: 14px; line-height: 1.6; }
.karsi-kart li::before { content: ""; position: absolute; left: 0; top: 8px;
                         width: 7px; height: 7px; border-radius: 2px; background: currentColor; opacity: .6; }
.k-kirmizi { border-color: rgba(248,113,113,.35); background: rgba(248,113,113,.06); }
.k-kirmizi h4, .k-kirmizi li { color: #FFB4B4; }
.k-yesil { border-color: rgba(52,211,153,.35); background: rgba(52,211,153,.06); }
.k-yesil h4, .k-yesil li { color: #9DECCD; }
.k-mor { border-color: rgba(139,92,246,.4); background: rgba(139,92,246,.08); }
.k-mor h4, .k-mor li { color: #C9BDFF; }
.k-mavi { border-color: rgba(34,211,238,.35); background: rgba(34,211,238,.06); }
.k-mavi h4, .k-mavi li { color: #9BEBF8; }
.k-gri { border-color: var(--line-2); background: var(--surface-2); }
.k-gri h4, .k-gri li { color: var(--muted); }
@media (max-width: 760px) { .karsi { grid-template-columns: 1fr; } }

/* quiz */
.quiz-soru { font-size: 18px; color: var(--ink); font-weight: 600; margin: 22px 0 20px; line-height: 1.55; }
.quiz-secenekler { display: flex; flex-direction: column; gap: 11px; }
.qs {
  display: flex; align-items: flex-start; gap: 13px; width: 100%; text-align: left; cursor: pointer;
  padding: 16px 18px; border-radius: 15px; background: var(--bg-2);
  border: 1.5px solid var(--line); color: var(--body); font-size: 15px; line-height: 1.55;
  transition: all .18s var(--ease);
}
.qs:hover:not(:disabled) { border-color: var(--line-2); background: var(--surface-2); transform: translateX(3px); }
.qs .harf { display: grid; place-items: center; width: 26px; height: 26px; flex-shrink: 0;
  border-radius: 8px; background: var(--surface-3); font-size: 12px; font-weight: 750; color: var(--muted); }
.qs.dogru { border-color: rgba(52,211,153,.6); background: rgba(52,211,153,.1); color: #C4F5E3; }
.qs.dogru .harf { background: var(--ok); color: #05261C; }
.qs.yanlis { border-color: rgba(248,113,113,.6); background: rgba(248,113,113,.1); color: #FFD4D4; }
.qs.yanlis .harf { background: var(--danger); color: #2C0808; }
.qs:disabled { cursor: default; }
.qs-aciklama { margin-top: 8px; font-size: 13px; line-height: 1.6; opacity: .85; }

/* slayt gezinme */
.slide-nav { display: flex; align-items: center; gap: 14px; margin-top: 24px; }
.slide-nav .mid { flex: 1; text-align: center; }
.slide-nav .cnt { font-size: 13px; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.slide-nav .hint { display: block; font-size: 11.5px; color: var(--faint); margin-top: 2px; }
.nav-round {
  display: grid; place-items: center; width: 50px; height: 50px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(140deg, var(--iris), var(--iris-2)); border: 0; color: #fff; cursor: pointer;
  box-shadow: 0 10px 24px -10px rgba(99,102,241,.95);
  transition: transform .16s var(--spring), opacity .2s;
}
.nav-round .ic { width: 20px; height: 20px; }
.nav-round:hover:not(:disabled) { transform: scale(1.07); }
.nav-round:disabled { opacity: .25; cursor: not-allowed; box-shadow: none; }
.nav-round.ghost { background: var(--surface-2); border: 1.5px solid var(--line); color: var(--body);
                   box-shadow: none; }
.nav-round.ghost:hover:not(:disabled) { border-color: var(--iris); color: var(--ink); }

@media (max-width: 700px) {
  .slide { padding: 28px 22px; min-height: 340px; }
  .slide h2 { font-size: 22px; }
  .maddeler li { font-size: 15px; }
}

/* ── Diyagramlar ───────────────────────────────────────── */

.diy { margin-top: 26px; }
.diy-akis { display: flex; align-items: stretch; gap: 12px; flex-wrap: wrap; }
.diy-kutu {
  flex: 1 1 150px; padding: 18px 16px; border-radius: 16px; text-align: center;
  background: var(--bg-2); border: 1.5px solid var(--line);
  transition: all .2s var(--ease);
}
.diy-kutu:hover { border-color: var(--iris); transform: translateY(-3px);
                  box-shadow: 0 14px 30px -16px rgba(99,102,241,.9); }
.diy-kutu .n { display: grid; place-items: center; width: 32px; height: 32px; margin: 0 auto 10px;
  border-radius: 10px; font-size: 12.5px; font-weight: 800; color: #fff;
  background: linear-gradient(140deg, var(--iris), var(--iris-2)); }
.diy-kutu b { display: block; font-size: 14px; color: var(--ink); }
.diy-kutu span { display: block; font-size: 12px; color: var(--muted); margin-top: 5px; line-height: 1.5; }
.diy-ok { display: grid; place-items: center; color: var(--line-2); font-size: 20px; flex: 0 0 22px; }

/* döngü diyagramı */
.diy-dongu { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap;
             padding: 10px 0; }
.diy-dongu .halka {
  padding: 14px 18px; border-radius: 99px; font-size: 13.5px; font-weight: 650;
  background: var(--surface-2); border: 1.5px solid var(--line-2); color: var(--body);
  animation: halkaGlow 5s var(--ease) infinite;
}
.diy-dongu .halka:nth-child(1) { animation-delay: 0s; }
.diy-dongu .halka:nth-child(3) { animation-delay: .5s; }
.diy-dongu .halka:nth-child(5) { animation-delay: 1s; }
.diy-dongu .halka:nth-child(7) { animation-delay: 1.5s; }
.diy-dongu .halka.son { border-color: rgba(52,211,153,.5); color: #9DECCD;
                        background: rgba(52,211,153,.1); animation: none; }
@keyframes halkaGlow {
  0%, 70%, 100% { border-color: var(--line-2); box-shadow: none; }
  12%, 24% { border-color: var(--iris); box-shadow: 0 0 18px -2px rgba(99,102,241,.8); color: var(--ink); }
}
.diy-geri { text-align: center; font-size: 12px; color: var(--faint); margin-top: 12px; }

/* token diyagramı */
.diy-token { display: flex; flex-wrap: wrap; gap: 7px; }
.diy-token span {
  padding: 8px 13px; border-radius: 9px; font-size: 13.5px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  background: var(--surface-2); border: 1px solid var(--line-2); color: var(--body);
  animation: tokIn .4s var(--spring) both;
}
.diy-token span.vurgu { background: rgba(139,92,246,.2); border-color: var(--iris-2); color: #D6CCFF; }
.diy-token span.tahmin { background: rgba(34,211,238,.14); border-color: var(--cyan); color: #9BEBF8;
                         border-style: dashed; }
@keyframes tokIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* blok/desen ızgarası */
.diy-blok { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 12px; }
.diy-blok .b {
  padding: 16px; border-radius: 15px; background: var(--bg-2); border: 1.5px solid var(--line);
  transition: all .2s var(--ease);
}
.diy-blok .b:hover { transform: translateY(-3px); border-color: var(--iris); }
.diy-blok .b .ic { width: 22px; height: 22px; color: var(--cyan); margin-bottom: 10px; }
.diy-blok .b b { display: block; font-size: 13.5px; color: var(--ink); }
.diy-blok .b span { display: block; font-size: 11.5px; color: var(--muted); margin-top: 4px; line-height: 1.5; }

/* program diyagramı */
.diy-prog { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.diy-prog .g { padding: 20px; border-radius: 18px; background: var(--bg-2); border: 1.5px solid var(--line); }
.diy-prog .g h4 { font-size: 15px; margin-bottom: 4px; }
.diy-prog .g .dk { font-size: 11.5px; font-weight: 750; letter-spacing: .08em; color: var(--cyan);
                   text-transform: uppercase; }
.diy-prog .g ol { margin: 14px 0 0; padding-left: 20px; display: flex; flex-direction: column; gap: 7px; }
.diy-prog .g li { font-size: 13.5px; color: var(--muted); }
@media (max-width: 700px) { .diy-prog { grid-template-columns: 1fr; } }

/* ── Prompt laboratuvarı ───────────────────────────────── */

.lab-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
@media (max-width: 1000px) { .lab-grid { grid-template-columns: 1fr; } }

.lab-panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
             overflow: hidden; }
.lab-head { display: flex; align-items: center; gap: 10px; padding: 13px 18px;
            border-bottom: 1px solid var(--line); background: var(--surface-2); }
.lab-head b { flex: 1; font-size: 13.5px; color: var(--ink); }
.lab-head .ic { width: 17px; height: 17px; color: var(--cyan); }
.lab-body { padding: 16px; }
.lab-body textarea {
  min-height: 210px; font: 500 13.5px/1.7 "JetBrains Mono", ui-monospace, Menlo, monospace;
  border-radius: 12px;
}
.lab-out {
  min-height: 210px; max-height: 460px; overflow-y: auto; padding: 16px;
  background: var(--bg-2); border: 1.5px solid var(--line); border-radius: 12px;
  font-size: 14.5px; line-height: 1.78; color: var(--body); white-space: pre-wrap;
}
.lab-out.bos { display: grid; place-items: center; color: var(--faint); font-size: 13.5px;
               white-space: normal; text-align: center; }
.lab-meta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 12px; font-size: 11.5px;
            color: var(--faint); font-variant-numeric: tabular-nums; }
.lab-meta b { color: var(--muted); font-weight: 700; }

/* puanlama */
.puan-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px;
             margin-top: 6px; }
.puan {
  padding: 14px; border-radius: 14px; background: var(--bg-2); border: 1.5px solid var(--line);
}
.puan-ad { font-size: 10.5px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
           color: var(--faint); }
.puan-bar { display: flex; gap: 4px; margin: 9px 0 8px; }
.puan-bar i { flex: 1; height: 5px; border-radius: 99px; background: var(--surface-3); }
.puan-bar i.on { background: linear-gradient(90deg, var(--iris), var(--cyan));
                 box-shadow: 0 0 8px rgba(99,102,241,.7); }
.puan.zayif .puan-bar i.on { background: var(--danger); box-shadow: none; }
.puan.orta .puan-bar i.on { background: var(--amber); box-shadow: none; }
.puan p { font-size: 12px; line-height: 1.55; color: var(--muted); }
.puan-toplam { display: flex; align-items: baseline; gap: 8px; }
.puan-toplam b { font-size: 34px; color: var(--ink); font-variant-numeric: tabular-nums; }
.puan-toplam span { font-size: 14px; color: var(--faint); }

/* ── Ajan atölyesi ─────────────────────────────────────── */

.atolye { display: grid; grid-template-columns: 230px minmax(0,1fr) minmax(0,380px); gap: 16px;
          align-items: start; }
@media (max-width: 1300px) { .atolye { grid-template-columns: 210px minmax(0,1fr); } 
                             .atolye .at-onizle { grid-column: 1 / -1; } }
@media (max-width: 820px) { .atolye { grid-template-columns: 1fr; } }

.at-palet { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
            padding: 14px; position: sticky; top: 78px; }
.at-palet h4 { font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase;
               color: var(--faint); margin-bottom: 12px; }
.palet-blok {
  display: flex; align-items: center; gap: 10px; padding: 11px 12px; margin-bottom: 8px;
  border-radius: 12px; background: var(--bg-2); border: 1.5px solid var(--line);
  cursor: grab; user-select: none; transition: all .16s var(--ease);
}
.palet-blok:hover { border-color: var(--iris); transform: translateX(3px); }
.palet-blok:active { cursor: grabbing; }
.palet-blok.dragging { opacity: .4; }
.palet-blok .ic { width: 17px; height: 17px; }
.palet-blok b { font-size: 13px; color: var(--ink); font-weight: 620; }
.pb-rol .ic { color: var(--iris-2); } .pb-gorev .ic { color: var(--cyan); }
.pb-arac .ic { color: var(--amber); } .pb-hafiza .ic { color: var(--pink); }
.pb-cikti .ic { color: var(--ok); } .pb-kisit .ic { color: var(--danger); }

.at-tuval {
  min-height: 420px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 16px;
}
.at-tuval.uzerinde { border-color: var(--iris); background: rgba(99,102,241,.06);
                     box-shadow: inset 0 0 0 1px var(--iris); }
.at-bos { display: grid; place-items: center; min-height: 380px; text-align: center;
          color: var(--faint); border: 2px dashed var(--line); border-radius: 16px; }
.at-bos .ic { width: 34px; height: 34px; margin: 0 auto 12px; color: var(--line-2); }

.blok {
  background: var(--bg-2); border: 1.5px solid var(--line); border-radius: 15px;
  margin-bottom: 12px; overflow: hidden; transition: border-color .18s var(--ease);
  animation: blokIn .3s var(--spring) both;
}
@keyframes blokIn { from { opacity: 0; transform: translateY(-8px) scale(.98); } to { opacity: 1; transform: none; } }
.blok:hover { border-color: var(--line-2); }
.blok.suruk { opacity: .35; }
.blok-head { display: flex; align-items: center; gap: 10px; padding: 11px 14px;
             background: var(--surface-2); border-bottom: 1px solid var(--line); cursor: grab; }
.blok-head .ic { width: 16px; height: 16px; }
.blok-head b { flex: 1; font-size: 13px; color: var(--ink); }
.blok-head .tut { color: var(--faint); font-size: 15px; letter-spacing: -2px; cursor: grab; }
.blok-sil { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px;
  background: transparent; border: 1px solid transparent; color: var(--faint); cursor: pointer; }
.blok-sil .ic { width: 14px; height: 14px; }
.blok-sil:hover { color: var(--danger); border-color: rgba(248,113,113,.4); background: rgba(248,113,113,.1); }
.blok-body { padding: 12px 14px; }
.blok-body textarea { min-height: 76px; font-size: 13.5px; border-radius: 10px; padding: 11px 13px; }
.blok-ipucu { font-size: 11.5px; color: var(--faint); margin-top: 7px; line-height: 1.5; }

.arac-secim { display: flex; flex-direction: column; gap: 7px; }
.arac-tik {
  display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; border-radius: 11px;
  background: var(--surface); border: 1.5px solid var(--line); cursor: pointer;
  transition: all .16s var(--ease);
}
.arac-tik:hover { border-color: var(--line-2); }
.arac-tik.on { border-color: var(--amber); background: rgba(251,191,36,.08); }
.arac-tik input { width: auto; margin: 3px 0 0; accent-color: var(--amber); }
.arac-tik b { display: block; font-size: 12.5px; color: var(--ink);
              font-family: "JetBrains Mono", ui-monospace, monospace; }
.arac-tik span { display: block; font-size: 11.5px; color: var(--muted); margin-top: 3px; line-height: 1.5; }

.at-onizle { position: sticky; top: 78px; display: flex; flex-direction: column; gap: 14px; }
.at-sistem {
  padding: 14px; max-height: 300px; overflow-y: auto; border-radius: 12px;
  background: #0A0C18; border: 1px solid var(--line-2);
  font: 500 12px/1.7 "JetBrains Mono", ui-monospace, monospace; color: #CFD6F5;
  white-space: pre-wrap;
}
.at-sistem .bos { color: var(--faint); font-style: italic; }

/* ajan çalıştırma çıktısı */
.ajan-adim { border-left: 2px solid var(--line-2); padding: 0 0 18px 18px; position: relative; }
.ajan-adim:last-child { padding-bottom: 0; border-color: transparent; }
.ajan-adim::before {
  content: ""; position: absolute; left: -7px; top: 3px; width: 12px; height: 12px; border-radius: 50%;
  background: var(--iris); box-shadow: 0 0 0 3px var(--surface), 0 0 12px rgba(99,102,241,.9);
}
.ajan-adim .tur { font-size: 10.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
                  color: var(--iris-2); }
.ajan-adim .dusunce { font-size: 13.5px; line-height: 1.7; color: var(--body); margin-top: 6px;
                      white-space: pre-wrap; }
.ajan-cagri {
  margin-top: 10px; padding: 11px 13px; border-radius: 11px;
  background: rgba(251,191,36,.08); border: 1px solid rgba(251,191,36,.3);
}
.ajan-cagri .ad { font-size: 12.5px; font-weight: 750; color: var(--amber);
                  font-family: "JetBrains Mono", ui-monospace, monospace; }
.ajan-cagri pre { margin: 6px 0 0; font: 500 11.5px/1.6 "JetBrains Mono", ui-monospace, monospace;
                  color: #E8D9AE; white-space: pre-wrap; word-break: break-word; }
.ajan-sonuc {
  margin-top: 7px; padding: 10px 13px; border-radius: 11px; max-height: 160px; overflow-y: auto;
  background: rgba(52,211,153,.07); border: 1px solid rgba(52,211,153,.28);
}
.ajan-sonuc pre { margin: 0; font: 500 11.5px/1.6 "JetBrains Mono", ui-monospace, monospace;
                  color: #9DECCD; white-space: pre-wrap; word-break: break-word; }
.ajan-sonuc.hata { background: rgba(248,113,113,.08); border-color: rgba(248,113,113,.3); }
.ajan-sonuc.hata pre { color: #FFB4B4; }
.ajan-cevap {
  margin-top: 16px; padding: 18px; border-radius: 15px;
  background: linear-gradient(140deg, rgba(99,102,241,.12), rgba(34,211,238,.06));
  border: 1.5px solid rgba(99,102,241,.4);
  font-size: 14.5px; line-height: 1.78; color: var(--ink); white-space: pre-wrap;
}

/* ── Yükleme ───────────────────────────────────────────── */

.loading { display: flex; align-items: center; gap: 12px; padding: 20px; color: var(--muted);
           font-size: 13.5px; }
.pulse-dots { display: flex; gap: 5px; }
.pulse-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--iris-2);
                animation: pd 1.3s var(--ease) infinite; }
.pulse-dots i:nth-child(2) { animation-delay: .16s; }
.pulse-dots i:nth-child(3) { animation-delay: .32s; }
@keyframes pd { 0%,100% { opacity: .3; transform: translateY(0); }
                40% { opacity: 1; transform: translateY(-5px); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* ── Satır içi canlı deneme ────────────────────────────── */

.mini { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 22px; }
@media (max-width: 900px) { .mini { grid-template-columns: 1fr; } }
.mini-yaz, .mini-cik { background: var(--bg-2); border: 1.5px solid var(--line);
                       border-radius: 16px; padding: 14px; }
.mini .lab-head { background: none; border: 0; padding: 0 0 10px; }
.mini textarea { min-height: 150px; border-radius: 11px;
  font: 500 13px/1.7 "JetBrains Mono", ui-monospace, monospace; }
.mini .lab-out { min-height: 150px; max-height: 340px; }
.mini-ipucu { margin-top: 11px; font-size: 12.5px; line-height: 1.6; color: var(--amber);
              display: flex; gap: 8px; align-items: flex-start; }
.mini-ipucu .ic { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; }

/* ── A/B deneyi ────────────────────────────────────────── */

.ab { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
@media (max-width: 900px) { .ab { grid-template-columns: 1fr; } }
.ab-kol { background: var(--bg-2); border: 1.5px solid var(--line); border-radius: 16px; padding: 14px; }
.ab-kol .lab-head { background: none; border: 0; padding: 0 0 10px; }
.ab-rozet { font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
            padding: 4px 11px; border-radius: 99px; }
.ab-sol { border-color: rgba(248,113,113,.35); }
.ab-sol .ab-rozet { background: rgba(248,113,113,.15); color: #FFB4B4;
                    border: 1px solid rgba(248,113,113,.4); }
.ab-sag { border-color: rgba(52,211,153,.35); }
.ab-sag .ab-rozet { background: rgba(52,211,153,.15); color: #9DECCD;
                    border: 1px solid rgba(52,211,153,.4); }
.ab textarea { min-height: 130px; border-radius: 11px; margin-bottom: 12px;
  font: 500 12.5px/1.65 "JetBrains Mono", ui-monospace, monospace; }
.ab .lab-out { min-height: 130px; max-height: 300px; font-size: 13.5px; }

/* ── Kur ve çalıştır ───────────────────────────────────── */

.sec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 20px; }
@media (max-width: 950px) { .sec-grid { grid-template-columns: 1fr; } }
.sec-grup { margin-bottom: 16px; }
.sec-grup h5 { font-size: 10.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
               color: var(--faint); margin: 0 0 9px; }
.cips { display: flex; flex-wrap: wrap; gap: 7px; }
.cip {
  padding: 9px 14px; border-radius: 99px; cursor: pointer; font-size: 13px; font-weight: 600;
  background: var(--bg-2); border: 1.5px solid var(--line); color: var(--body);
  transition: all .16s var(--ease);
}
.cip:hover { border-color: var(--line-2); color: var(--ink); transform: translateY(-1px); }
.cip.on { background: linear-gradient(135deg, var(--iris), var(--iris-2)); border-color: transparent;
          color: #fff; box-shadow: 0 8px 18px -8px rgba(99,102,241,.95); }
.sec-sag { background: var(--bg-2); border: 1.5px solid var(--line); border-radius: 16px; padding: 14px; }
.sec-sag .lab-head { background: none; border: 0; padding: 0 0 10px; }
.sec-sag .at-sistem { max-height: 190px; }

/* ── Sıralama ──────────────────────────────────────────── */

.sirala { list-style: none; margin: 20px 0 0; padding: 0; display: flex;
          flex-direction: column; gap: 9px; }
.sirala li {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 13px;
  background: var(--bg-2); border: 1.5px solid var(--line); color: var(--body);
  font-size: 14.5px; cursor: grab; transition: all .16s var(--ease);
}
.sirala li:hover { border-color: var(--line-2); }
.sirala li.suruk { opacity: .35; }
.sirala li.iyi { border-color: rgba(52,211,153,.55); background: rgba(52,211,153,.08); }
.sirala li.kotu { border-color: rgba(248,113,113,.5); background: rgba(248,113,113,.07); }
.sr-tut { color: var(--faint); letter-spacing: -2px; }
.sr-no { display: grid; place-items: center; width: 26px; height: 26px; flex-shrink: 0;
  border-radius: 8px; background: var(--surface-3); font-size: 12px; font-weight: 750;
  color: var(--muted); font-variant-numeric: tabular-nums; }
.sirala li.iyi .sr-no { background: var(--ok); color: #05261C; }
.sr-m { flex: 1; }

/* ── Kaydırıcı ─────────────────────────────────────────── */

.kay { margin-top: 24px; }
.kay-r {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px; padding: 0;
  border-radius: 99px; outline: none; cursor: pointer; border: 0;
  background: linear-gradient(90deg, var(--ok), var(--amber) 55%, var(--danger));
}
.kay-r::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px;
  border-radius: 50%; background: #fff; border: 4px solid var(--iris);
  box-shadow: 0 3px 12px rgba(0,0,0,.5); cursor: pointer; }
.kay-r::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: #fff;
  border: 4px solid var(--iris); box-shadow: 0 3px 12px rgba(0,0,0,.5); cursor: pointer; }
.kay-etiketler { display: flex; justify-content: space-between; gap: 6px; margin: 14px 0 20px; }
.kay-e { flex: 1; padding: 8px 6px; border-radius: 10px; cursor: pointer; font-size: 12px;
  font-weight: 650; background: none; border: 1.5px solid transparent; color: var(--faint);
  transition: all .16s var(--ease); }
.kay-e:hover { color: var(--body); }
.kay-e.on { color: var(--ink); background: var(--surface-2); border-color: var(--line-2); }
.kay-kart { padding: 22px; border-radius: 18px; background: var(--bg-2);
            border: 1.5px solid var(--line); animation: fadein .25s var(--ease) both; }
.kay-ust { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.kay-ust h4 { flex: 1; font-size: 19px; }
.kay-ac { font-size: 15px; line-height: 1.72; color: var(--body); }
.kay-ornek { display: flex; gap: 10px; align-items: flex-start; margin-top: 14px; padding: 12px 14px;
  border-radius: 12px; background: rgba(251,191,36,.08); border-left: 3px solid var(--amber);
  font-size: 13.5px; line-height: 1.6; color: #E8D9AE; }
.kay-ornek .ic { width: 17px; height: 17px; flex-shrink: 0; margin-top: 1px; }
.kay-barlar { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
              gap: 14px; margin-top: 20px; }
.kay-bar span { display: block; font-size: 10.5px; font-weight: 800; letter-spacing: .1em;
                text-transform: uppercase; color: var(--faint); margin-bottom: 7px; }
.kay-bar i { display: flex; gap: 4px; }
.kay-bar u { flex: 1; height: 6px; border-radius: 99px; background: var(--surface-3); }
.kay-bar u.on.kirmizi { background: var(--danger); }
.kay-bar u.on.yesil { background: var(--ok); }
.kay-bar u.on.mavi { background: var(--cyan); }

/* ── Sayılarla ─────────────────────────────────────────── */

.ist { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px;
       margin-top: 24px; }
.ist-k { padding: 22px 20px; border-radius: 18px; background: var(--bg-2);
         border: 1.5px solid var(--line); transition: all .2s var(--ease); }
.ist-k:hover { border-color: var(--iris); transform: translateY(-3px);
               box-shadow: 0 16px 34px -18px rgba(99,102,241,.9); }
.ist-k b { display: block; font-size: 34px; line-height: 1.05; letter-spacing: -.03em;
  background: linear-gradient(135deg, var(--cyan), var(--iris-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.ist-k span { display: block; font-size: 11px; font-weight: 800; letter-spacing: .1em;
              text-transform: uppercase; color: var(--faint); margin-top: 9px; }
.ist-k p { font-size: 13px; line-height: 1.6; color: var(--muted); margin-top: 10px; }

/* enjeksiyon diyagramı vurguları */
.diy-kutu.enj { border-color: rgba(248,113,113,.5); background: rgba(248,113,113,.07); }
.diy-kutu.enj .n { background: linear-gradient(140deg, #F87171, #B91C1C); }
.diy-kutu.enj-son { border-color: rgba(251,191,36,.5); background: rgba(251,191,36,.07); }
.diy-kutu.enj-son .n { background: linear-gradient(140deg, var(--amber), #B45309); color: #2B1A02; }

/* ── Ders sayfası: üç kolon ────────────────────────────── */

.ders-duzen { display: grid; grid-template-columns: auto minmax(0,1fr) auto; gap: 18px; align-items: start; }
.ders-orta { min-width: 0; }

.ders-sol, .ders-sag {
  width: 244px; flex-shrink: 0; position: sticky; top: 74px;
  max-height: calc(100vh - 96px); overflow: auto;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: width .26s var(--ease);
}
.ders-sag { width: 268px; }
.ds-head { display: flex; align-items: center; gap: 8px; padding: 12px 14px;
  border-bottom: 1px solid var(--line); background: var(--surface-2);
  position: sticky; top: 0; z-index: 2; }
.ds-head b { flex: 1; font-size: 12px; font-weight: 800; letter-spacing: .1em;
             text-transform: uppercase; color: var(--muted); }
.ds-tog { display: grid; place-items: center; width: 24px; height: 24px; flex-shrink: 0;
  border-radius: 7px; background: var(--surface-3); border: 1px solid var(--line);
  color: var(--muted); cursor: pointer; }
.ds-tog .ic { width: 13px; height: 13px; }
.ds-tog:hover { color: var(--cyan); border-color: var(--cyan); }
.ds-body { padding: 12px; }

.ds-gun { margin-bottom: 16px; }
.ds-gun h5 { font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
             color: var(--faint); margin: 0 0 8px 4px; }
.ds-ders { display: flex; align-items: center; gap: 9px; width: 100%; text-align: left;
  padding: 8px 9px; border-radius: 10px; background: none; border: 1px solid transparent;
  cursor: pointer; margin-bottom: 3px; transition: all .16s var(--ease); }
.ds-ders:hover { background: var(--surface-2); }
.ds-no { display: grid; place-items: center; width: 26px; height: 26px; flex-shrink: 0;
  border-radius: 8px; background: var(--surface-2); border: 1px solid var(--line);
  font-size: 10.5px; font-weight: 750; color: var(--faint); font-variant-numeric: tabular-nums; }
.ds-no .ic { width: 14px; height: 14px; }
.ds-ad { flex: 1; font-size: 12.5px; color: var(--muted); line-height: 1.4; }
.ds-ders.bitti .ds-no { background: rgba(52,211,153,.15); border-color: rgba(52,211,153,.4); color: var(--ok); }
.ds-ders.now { background: var(--surface-3); border-color: var(--line-2); }
.ds-ders.now .ds-ad { color: var(--ink); font-weight: 650; }
.ds-ders.now .ds-no { background: linear-gradient(140deg, var(--iris), var(--iris-2));
                      border-color: transparent; color: #fff; }

.ds-slaytlar { padding: 4px 0 8px 16px; margin-left: 12px; border-left: 1.5px solid var(--line); }
.ds-sl { display: flex; align-items: center; gap: 8px; width: 100%; text-align: left;
  padding: 5px 7px; border-radius: 7px; background: none; border: 0; cursor: pointer;
  font-size: 11.5px; color: var(--faint); line-height: 1.35; transition: all .14s var(--ease); }
.ds-sl i { width: 6px; height: 6px; border-radius: 50%; background: var(--line-2); flex-shrink: 0; }
.ds-sl span { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ds-sl:hover { color: var(--body); background: var(--surface-2); }
.ds-sl.gecti i { background: var(--iris); }
.ds-sl.on { color: var(--ink); font-weight: 650; }
.ds-sl.on i { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }

.ds-bolum { margin-bottom: 18px; }
.ds-bolum h5 { display: flex; align-items: center; gap: 7px; font-size: 10px; font-weight: 800;
  letter-spacing: .11em; text-transform: uppercase; color: var(--faint); margin: 0 0 10px; }
.ds-bolum h5 .ic { width: 14px; height: 14px; color: var(--amber); }
.ds-fikir { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.ds-fikir li { padding: 10px 11px; border-radius: 10px; background: var(--bg-2);
               border-left: 2px solid var(--iris); }
.ds-fikir b { display: block; font-size: 11.5px; color: var(--ink); margin-bottom: 3px; }
.ds-fikir span { display: block; font-size: 11.5px; color: var(--muted); line-height: 1.55; }
.ds-bos { font-size: 11.5px; color: var(--faint); line-height: 1.6; }
.ds-onceki { display: block; width: 100%; text-align: left; padding: 9px 11px; margin-bottom: 6px;
  border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); cursor: pointer;
  transition: all .16s var(--ease); }
.ds-onceki:hover { border-color: var(--iris); transform: translateX(2px); }
.ds-onceki b { display: block; font-size: 11.5px; color: var(--ink); }
.ds-onceki span { display: block; font-size: 11px; color: var(--faint); margin-top: 3px; line-height: 1.45; }

.ders-sol.kapali, .ders-sag.kapali { width: 42px; overflow: hidden; }
.ders-sol.kapali .ds-body, .ders-sag.kapali .ds-body { display: none; }
.ders-sol.kapali .ds-head, .ders-sag.kapali .ds-head { padding: 12px 8px; background: none; border: 0; }
.ders-sol.kapali .ds-head b, .ders-sag.kapali .ds-head b { display: none; }

@media (max-width: 1400px) { .ders-sag { display: none; } .ders-duzen { grid-template-columns: auto minmax(0,1fr); } }
@media (max-width: 1050px) {
  .ders-duzen { grid-template-columns: 1fr; }
  .ders-sol { position: static; width: auto; max-height: 280px; }
  .ders-sol.kapali { width: auto; }
}

/* ── SVG görseller ─────────────────────────────────────── */

.gorsel-kutu { margin: 26px 0 0; padding: 18px; border-radius: 20px;
  background: linear-gradient(150deg, #12152A, #0D1020);
  border: 1px solid var(--line); }
.gorsel { width: 100%; height: auto; display: block; }
.gorsel-kutu figcaption { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line);
  font-size: 13.5px; line-height: 1.65; color: var(--muted); text-align: center; }

/* gömülü atölye slayt içinde daha dar */
.gomulu-atolye { grid-template-columns: 180px minmax(0,1fr) minmax(0,300px); gap: 12px; }
.gomulu-atolye .at-palet, .gomulu-atolye .at-onizle { position: static; }
.gomulu-atolye .at-tuval { min-height: 260px; }
.gomulu { margin-top: 22px; }
@media (max-width: 1200px) { .gomulu-atolye { grid-template-columns: 170px minmax(0,1fr); }
                             .gomulu-atolye .at-onizle { grid-column: 1 / -1; } }
@media (max-width: 780px) { .gomulu-atolye { grid-template-columns: 1fr; } }