/* ==========================================================================
   Teknim Eğitim Platformu — Tasarım Sistemi
   Yön: Alarm/güvenlik panelinin sakin, güven veren dünyasından ilham alan
   bir "durum paneli" estetiği. Kırmızı alarm tonları yerine "güvenli yeşil"
   ve "bilgi mavisi" baskın; amber sadece dikkat gerektiren yerlerde.
   Palet: #F6F8F7 zemin • #142027 mürekkep • #0E6E5C birincil (güvenli)
          #2C6E9E ikincil (bilgi) • #C97A2B amber (dikkat) • #B23A34 (nadir/uyarı)
   Tipografi: Space Grotesk (başlık) • Inter (gövde) • IBM Plex Mono (veri/okuma)
   İmza öğesi: "Durum Halkası" — alarm panelindeki LED halkasından esinlenen
   dairesel ilerleme göstergesi + üstte segmentli "sistem şeridi".
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  --bg: #F3F6F5;
  --bg-alt: #EBF0EE;
  --surface: #FFFFFF;
  --border: #E1E8E5;
  --ink: #142027;
  --ink-soft: #55666D;
  --ink-faint: #8B9BA1;

  --primary: #0E6E5C;
  --primary-dark: #0A5347;
  --primary-tint: #E3F1EC;

  --info: #2C6E9E;
  --info-tint: #E7F0F7;

  --amber: #C97A2B;
  --amber-tint: #FBEEE0;

  --danger: #B23A34;
  --danger-tint: #FBEAE9;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(20,32,39,.06);
  --shadow: 0 8px 24px -8px rgba(20,32,39,.18);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4{ font-family: var(--font-display); letter-spacing: -0.01em; margin: 0 0 .4em; color: var(--ink); }
p{ margin: 0 0 1em; color: var(--ink-soft); line-height:1.6; }
a{ color: var(--primary); text-decoration: none; }
a:hover{ text-decoration: underline; }
.mono{ font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.hidden{ display:none !important; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Sistem Şeridi (üst ince durum çubuğu — imza öğesi) ---------- */
.system-strip{
  display:flex; align-items:center; gap:10px;
  background: var(--ink);
  color: rgba(255,255,255,.72);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  padding: 6px 20px;
}
.system-strip .dot{
  width:7px; height:7px; border-radius:50%;
  background: #34D399;
  box-shadow: 0 0 0 3px rgba(52,211,153,.18);
  flex-shrink:0;
}
.system-strip .ticks{
  display:flex; gap:3px; margin-left:auto;
}
.system-strip .ticks span{
  width:3px; height:10px; background: rgba(255,255,255,.18); border-radius:1px;
}
.system-strip .ticks span.on{ background: #34D399; }

/* ---------- Giriş (Login) Ekranı ---------- */
.auth-shell{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  background:
    radial-gradient(1100px 600px at 15% -10%, #E3F1EC 0%, transparent 60%),
    radial-gradient(900px 500px at 110% 110%, #E7F0F7 0%, transparent 55%),
    var(--bg);
  padding: 24px;
}
.auth-card{
  width:100%; max-width: 960px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  display:grid; grid-template-columns: 1.05fr 1fr;
  overflow:hidden;
}
.auth-side{
  background: linear-gradient(165deg, var(--primary-dark), var(--primary) 70%);
  color:#fff; padding: 48px 40px; position:relative; overflow:hidden;
  display:flex; flex-direction:column; justify-content:space-between;
}
.auth-side::after{
  content:""; position:absolute; inset:auto -60px -60px auto; width:260px;height:260px;
  border-radius:50%; border: 1px solid rgba(255,255,255,.14);
}
.auth-side::before{
  content:""; position:absolute; inset:auto -20px -20px auto; width:180px;height:180px;
  border-radius:50%; border: 1px solid rgba(255,255,255,.10);
}
.auth-mark{ font-family: var(--font-display); font-weight:700; font-size: 22px; letter-spacing:-.01em; }
.auth-mark small{ display:block; font-family: var(--font-mono); font-weight:500; font-size:11px; letter-spacing:.14em; opacity:.72; margin-top:6px; text-transform:uppercase; }
.auth-quote{ font-family: var(--font-display); font-size: 26px; line-height:1.3; max-width: 360px; position:relative; z-index:1; }
.auth-foot{ font-family: var(--font-mono); font-size:11.5px; opacity:.75; letter-spacing:.04em; position:relative; z-index:1; }
.auth-form{ padding: 48px 44px; display:flex; flex-direction:column; justify-content:center; }
.auth-form h1{ font-size: 26px; }
.auth-form .lead{ margin-bottom: 26px; }

/* ---------- Form elemanları ---------- */
.field{ margin-bottom: 18px; }
.field label{ display:block; font-size: 13px; font-weight:600; margin-bottom:6px; color: var(--ink); }
.field .hint{ font-size:12px; color: var(--ink-faint); margin-top:5px; }
input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=search], input[type=file], textarea, select{
  width:100%; padding: 11px 13px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 14.5px; color: var(--ink); background:#fff;
  transition: border-color .15s ease, box-shadow .15s ease;
}
textarea{ resize: vertical; min-height: 100px; }
input:focus, textarea:focus, select:focus{
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3.5px var(--primary-tint);
}
select{ appearance:none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2355666D' stroke-width='1.6' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position: right 14px center; padding-right:34px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family: var(--font-body); font-weight:600; font-size:14px;
  padding: 11px 20px; border-radius: var(--radius-sm); border: 1.5px solid transparent;
  cursor:pointer; transition: all .15s ease; text-decoration:none; line-height:1;
}
.btn:hover{ text-decoration:none; }
.btn-primary{ background: var(--primary); color:#fff; }
.btn-primary:hover{ background: var(--primary-dark); }
.btn-outline{ background:#fff; border-color: var(--border); color: var(--ink); }
.btn-outline:hover{ border-color: var(--primary); color: var(--primary); }
.btn-ghost{ background: transparent; color: var(--ink-soft); }
.btn-ghost:hover{ background: var(--bg-alt); color: var(--ink); }
.btn-danger{ background: var(--danger); color:#fff; }
.btn-danger:hover{ background:#8f2d28; }
.btn-block{ width:100%; }
.btn-sm{ padding: 7px 13px; font-size:13px; }
.btn[disabled]{ opacity:.5; cursor:not-allowed; }

/* ---------- Uygulama İskeleti (sidebar + içerik) ---------- */
.app-shell{ display:flex; min-height: 100vh; }
.sidebar{
  width: 252px; flex-shrink:0; background: var(--ink); color: rgba(255,255,255,.86);
  display:flex; flex-direction:column; position:sticky; top:0; height:100vh;
}
.sidebar-brand{ padding: 22px 22px 16px; }
.sidebar-brand .name{ font-family: var(--font-display); font-weight:700; font-size:17px; color:#fff; }
.sidebar-brand .role{ font-family: var(--font-mono); font-size:10.5px; letter-spacing:.12em; text-transform:uppercase; color: #6FCF97; margin-top:4px; }
.sidebar-nav{ flex:1; overflow-y:auto; padding: 10px 12px; }
.sidebar-nav .group-label{ font-size:10.5px; text-transform:uppercase; letter-spacing:.12em; color: rgba(255,255,255,.35); padding: 14px 10px 6px; font-family: var(--font-mono); }
.sidebar-nav a{
  display:flex; align-items:center; gap:11px; padding: 10px 12px; border-radius: var(--radius-sm);
  color: rgba(255,255,255,.72); font-size:14px; font-weight:500; margin-bottom:2px;
}
.sidebar-nav a:hover{ background: rgba(255,255,255,.06); color:#fff; text-decoration:none; }
.sidebar-nav a.active{ background: var(--primary); color:#fff; }
.sidebar-nav a .ic{ width:18px; text-align:center; opacity:.9; flex-shrink:0; }
.sidebar-foot{ padding: 14px 20px 20px; border-top: 1px solid rgba(255,255,255,.08); }
.sidebar-user{ display:flex; align-items:center; gap:10px; font-size:13px; }
.sidebar-user .avatar{ width:32px;height:32px;border-radius:50%; background: var(--primary); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:13px; flex-shrink:0; }
.sidebar-user .who{ overflow:hidden; }
.sidebar-user .who b{ display:block; color:#fff; font-size:13px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.sidebar-user .who span{ color: rgba(255,255,255,.5); font-size:11.5px; }

.main{ flex:1; min-width:0; }
.topbar{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding: 16px 32px; background: var(--surface); border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:5;
}
.topbar h1{ font-size:20px; }
.topbar .sub{ font-size:12.5px; color: var(--ink-faint); margin-top:2px; }
.content{ padding: 28px 32px 60px; max-width:1240px; }

/* ---------- Kartlar ---------- */
.card{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.card + .card{ margin-top:16px; }
.card-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; gap:12px; }
.card-head h3{ font-size:16px; }
.grid{ display:grid; gap:16px; }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px){ .grid-2,.grid-3,.grid-4{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px){ .grid-2,.grid-3,.grid-4{ grid-template-columns: 1fr; } .auth-card{ grid-template-columns: 1fr; } .auth-side{ display:none; } }

/* KPI kartı */
.kpi{ display:flex; align-items:center; gap:16px; }
.kpi .num{ font-family: var(--font-display); font-size:30px; font-weight:700; }
.kpi .label{ font-size:12.5px; color: var(--ink-faint); text-transform:uppercase; letter-spacing:.06em; font-family: var(--font-mono); }

/* ---------- Durum Halkası (imza bileşeni: dairesel ilerleme) ---------- */
.status-ring{ position:relative; display:inline-flex; align-items:center; justify-content:center; flex-shrink:0; }
.status-ring svg{ transform: rotate(-90deg); }
.status-ring circle{ fill:none; stroke-width: 8; }
.status-ring .track{ stroke: var(--bg-alt); }
.status-ring .value{ stroke: var(--primary); stroke-linecap: round; transition: stroke-dashoffset .5s ease; }
.status-ring .value.amber{ stroke: var(--amber); }
.status-ring .value.info{ stroke: var(--info); }
.status-ring .center{ position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.status-ring .center b{ font-family: var(--font-display); font-size:19px; line-height:1; }
.status-ring .center span{ font-family: var(--font-mono); font-size:9.5px; color: var(--ink-faint); text-transform:uppercase; letter-spacing:.06em; margin-top:2px; }

/* ---------- Rozet / Etiket ---------- */
.badge{ display:inline-flex; align-items:center; gap:5px; font-size:11.5px; font-weight:600; padding: 4px 10px; border-radius: 100px; font-family: var(--font-mono); letter-spacing:.02em; }
.badge::before{ content:""; width:6px;height:6px;border-radius:50%; background: currentColor; }
.badge-success{ background: var(--primary-tint); color: var(--primary-dark); }
.badge-info{ background: var(--info-tint); color: var(--info); }
.badge-amber{ background: var(--amber-tint); color: var(--amber); }
.badge-danger{ background: var(--danger-tint); color: var(--danger); }
.badge-neutral{ background: var(--bg-alt); color: var(--ink-soft); }

/* ---------- Tablo ---------- */
.table-wrap{ overflow-x:auto; }
table{ width:100%; border-collapse: collapse; font-size: 14px; }
th{ text-align:left; font-size: 11.5px; text-transform:uppercase; letter-spacing:.06em; color: var(--ink-faint); font-family: var(--font-mono); font-weight:600; padding: 10px 12px; border-bottom: 1.5px solid var(--border); white-space:nowrap; }
td{ padding: 12px; border-bottom: 1px solid var(--border); vertical-align:middle; }
tr:last-child td{ border-bottom:none; }
tbody tr:hover{ background: var(--bg-alt); }

/* ---------- İlerleme Çubuğu (doğrusal, liste içi kullanım) ---------- */
.progress-bar{ height:7px; background: var(--bg-alt); border-radius:100px; overflow:hidden; }
.progress-bar > span{ display:block; height:100%; background: var(--primary); border-radius:100px; }

/* ---------- Boş Durum ---------- */
.empty{ text-align:center; padding: 48px 20px; color: var(--ink-faint); }
.empty .ic{ font-size:34px; margin-bottom:10px; }

/* ---------- Bildirim / Uyarı Kutuları ---------- */
.alert{ padding: 13px 16px; border-radius: var(--radius-sm); font-size:14px; margin-bottom:16px; display:flex; gap:10px; align-items:flex-start; }
.alert-success{ background: var(--primary-tint); color: var(--primary-dark); }
.alert-info{ background: var(--info-tint); color: var(--info); }
.alert-error{ background: var(--danger-tint); color: var(--danger); }
.alert-amber{ background: var(--amber-tint); color: var(--amber); }

/* ---------- Materyal Listesi (kurs içi) ---------- */
.material-row{ display:flex; align-items:center; gap:14px; padding: 14px 16px; border:1px solid var(--border); border-radius: var(--radius-sm); margin-bottom:8px; background:#fff; }
.material-row .idx{ font-family: var(--font-mono); font-size:12px; color: var(--ink-faint); width:22px; flex-shrink:0; }
.material-row .ic{ width:36px;height:36px;border-radius:9px; background: var(--bg-alt); display:flex; align-items:center; justify-content:center; flex-shrink:0; color: var(--ink-soft); }
.material-row .body{ flex:1; min-width:0; }
.material-row .title{ font-weight:600; font-size:14.5px; }
.material-row .meta{ font-size:12px; color: var(--ink-faint); font-family: var(--font-mono); margin-top:2px; }
.material-row.done{ border-color: var(--primary-tint); background: linear-gradient(0deg, #fff, var(--primary-tint) 400%); }
.material-row.locked{ opacity:.55; }

/* ---------- Video oynatıcı sarmalayıcı ---------- */
.video-wrap{ background:#0B1418; border-radius: var(--radius); overflow:hidden; }
.video-wrap video{ width:100%; display:block; max-height: 520px; background:#000; }
.doc-viewer{ border:1px solid var(--border); border-radius: var(--radius); overflow:hidden; background:#525659; }
.doc-viewer iframe{ width:100%; height: 640px; border:0; display:block; }

/* ---------- Sınav ---------- */
.exam-shell{ max-width: 760px; margin: 0 auto; }
.exam-timer{ font-family: var(--font-mono); font-size:14px; background: var(--ink); color:#fff; padding:8px 14px; border-radius:100px; display:inline-flex; align-items:center; gap:8px; }
.q-card{ background:#fff; border:1px solid var(--border); border-radius: var(--radius); padding:22px; margin-bottom:14px; }
.q-card .q-idx{ font-family: var(--font-mono); font-size:11.5px; color: var(--primary); text-transform:uppercase; letter-spacing:.08em; margin-bottom:8px; }
.q-card .q-text{ font-weight:600; font-size:16px; margin-bottom:16px; }
.opt{ display:flex; align-items:center; gap:11px; padding: 12px 14px; border:1.5px solid var(--border); border-radius: var(--radius-sm); margin-bottom:8px; cursor:pointer; transition: all .12s ease; }
.opt:hover{ border-color: var(--primary); background: var(--primary-tint); }
.opt input{ accent-color: var(--primary); width:16px; height:16px; }
.opt.correct{ border-color: var(--primary); background: var(--primary-tint); }
.opt.wrong{ border-color: var(--danger); background: var(--danger-tint); }

/* ---------- Yardımcı sınıflar ---------- */
.flex{ display:flex; } .items-center{ align-items:center; } .justify-between{ justify-content:space-between; }
.gap-8{ gap:8px; } .gap-12{ gap:12px; } .gap-16{ gap:16px; }
.text-sm{ font-size:13px; } .text-xs{ font-size:11.5px; }
.text-faint{ color: var(--ink-faint); } .text-soft{ color: var(--ink-soft); }
.mt-0{ margin-top:0; } .mb-0{ margin-bottom:0; } .mb-8{ margin-bottom:8px; } .mb-16{ margin-bottom:16px; }
.w-full{ width:100%; }
.chip-row{ display:flex; flex-wrap:wrap; gap:8px; }