/* =========================================================
   Bikoçmetrik — Tasarım Sistemi
   Palet: açık, temiz gündüz çalışması + başarı vurgusu
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root{
    --bg-deep:      #F4F5F9;
    --bg-panel:     #FFFFFF;
    --bg-panel-2:   #FBFBFD;
    --bg-elevated:  #EEF0F6;
    --line:         rgba(24,31,63,.08);
    --line-strong:  rgba(24,31,63,.14);

    --text-1:       #1B2140;
    --text-2:       #5B6485;
    --text-3:       #8890AA;

    --amber:        #E8930F;
    --amber-soft:   rgba(232,147,15,.13);
    --cyan:         #0FA6BC;
    --cyan-soft:    rgba(15,166,188,.12);
    --violet:       #6957E0;
    --violet-soft:  rgba(105,87,224,.13);

    --green:        #1AA179;
    --red:          #D8524C;

    --radius-lg:    22px 22px 22px 6px;
    --radius-md:    14px 14px 14px 4px;
    --radius-sm:    10px;

    --shadow-deep:  0 30px 60px -20px rgba(24,31,63,.22);
    --shadow-card:  0 14px 34px -16px rgba(24,31,63,.14);
    --shadow-glow-amber: 0 10px 26px -8px rgba(232,147,15,.28);
    --shadow-glow-cyan:  0 10px 26px -8px rgba(15,166,188,.28);

    --font-display: 'Space Grotesk', sans-serif;
    --font-body:    'Manrope', sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
    margin:0;
    font-family:var(--font-body);
    background:
        radial-gradient(1200px 600px at 85% -10%, rgba(105,87,224,.06), transparent 60%),
        radial-gradient(900px 500px at -10% 110%, rgba(15,166,188,.05), transparent 60%),
        var(--bg-deep);
    color:var(--text-1);
    line-height:1.55;
    min-height:100vh;
}
h1,h2,h3,h4,.display{font-family:var(--font-display); font-weight:600; letter-spacing:-.01em; margin:0;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
button{font-family:var(--font-body); cursor:pointer;}

::selection{background:var(--amber); color:#1a1200;}

/* ---------- Ölçek yardımcıları ---------- */
.container{max-width:1240px; margin:0 auto; padding:0 24px;}
.muted{color:var(--text-2);}
.faint{color:var(--text-3);}

/* ---------- 3D perspektifli kart sistemi ---------- */
.panel{
    background:linear-gradient(160deg, var(--bg-panel-2), var(--bg-panel));
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
    position:relative;
    padding:28px;
}
.panel::before{
    content:"";
    position:absolute; top:0; left:26px; right:26px; height:3px;
    border-radius:0 0 4px 4px;
    background:linear-gradient(90deg, var(--amber), var(--violet) 60%, var(--cyan));
    opacity:.85;
}
.panel--flat{box-shadow:none; border:1px solid var(--line);}

/* Not: kart hover hareketi (3B eğilme) kaldırıldı — paneller sabit durur. */
.tilt-card{transition:box-shadow .25s ease;}

.stat-card{
    background:linear-gradient(150deg, var(--bg-panel-2), var(--bg-panel));
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:20px 22px;
    box-shadow:var(--shadow-card);
}
.stat-card .num{font-family:var(--font-display); font-size:2.1rem; font-weight:700;}
.stat-card .label{color:var(--text-2); font-size:.86rem; margin-top:4px;}

/* renk vurguları */
.accent-amber{color:var(--amber);}
.accent-cyan{color:var(--cyan);}
.accent-violet{color:var(--violet);}
.accent-green{color:var(--green);}
.accent-red{color:var(--red);}

.badge{
    display:inline-flex; align-items:center; gap:6px;
    padding:4px 11px; border-radius:20px; font-size:.78rem; font-weight:600;
}
.badge-amber{background:var(--amber-soft); color:var(--amber);}
.badge-cyan{background:var(--cyan-soft); color:var(--cyan);}
.badge-violet{background:var(--violet-soft); color:var(--violet);}
.badge-green{background:rgba(26,161,121,.13); color:var(--green);}
.badge-red{background:rgba(216,82,76,.13); color:var(--red);}

/* ---------- Butonlar ---------- */
.btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:12px 22px; border-radius:12px; border:1px solid transparent;
    font-weight:700; font-size:.94rem; transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:active{transform:translateY(1px) scale(.99);}
.btn-primary{
    background:linear-gradient(135deg, var(--amber), #ffcd6b);
    color:#1c1400;
    box-shadow:var(--shadow-glow-amber);
}
.btn-primary:hover{box-shadow:0 16px 30px -8px rgba(232,147,15,.4); transform:translateY(-2px);}
.btn-secondary{
    background:var(--bg-elevated); color:var(--text-1); border:1px solid var(--line-strong);
}
.btn-secondary:hover{border-color:var(--cyan); color:var(--cyan);}
.btn-ghost{background:transparent; color:var(--text-2); border:1px solid var(--line);}
.btn-ghost:hover{color:var(--text-1); border-color:var(--line-strong);}
.btn-danger{background:rgba(216,82,76,.12); color:var(--red); border:1px solid rgba(216,82,76,.28);}
.btn-sm{padding:8px 14px; font-size:.82rem; border-radius:9px;}
.btn-block{width:100%;}

/* ---------- Form elemanları ---------- */
label{display:block; font-size:.85rem; color:var(--text-2); margin-bottom:6px; font-weight:600;}
input, select, textarea{
    width:100%; padding:12px 14px; border-radius:10px;
    background:var(--bg-deep); border:1px solid var(--line-strong);
    color:var(--text-1); font-family:var(--font-body); font-size:.95rem;
    transition:border-color .15s ease, box-shadow .15s ease;
}
input:focus, select:focus, textarea:focus{
    outline:none; border-color:var(--cyan); box-shadow:0 0 0 3px var(--cyan-soft);
}
.field{margin-bottom:18px;}
::placeholder{color:var(--text-3);}

/* ---------- Genel sayfa iskeleti (dashboard) ---------- */
.app-shell{display:flex; min-height:100vh;}
.sidebar{
    width:264px; flex-shrink:0; background:linear-gradient(180deg, var(--bg-panel-2), var(--bg-deep));
    border-right:1px solid var(--line); padding:26px 18px; position:sticky; top:0; height:100vh; overflow-y:auto;
}
.sidebar .brand{display:flex; align-items:center; gap:10px; padding:6px 10px 26px;}
.sidebar .brand .mark{
    width:38px; height:38px; border-radius:11px;
    background:linear-gradient(135deg, var(--amber), var(--violet));
    display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:700; color:#100b00;
}
.sidebar nav a{
    display:flex; align-items:center; gap:12px; padding:11px 14px; border-radius:11px;
    color:var(--text-2); font-weight:600; font-size:.92rem; margin-bottom:4px;
    border:1px solid transparent;
}
.sidebar nav a svg{width:18px; height:18px; flex-shrink:0;}
.sidebar nav a:hover{background:var(--bg-elevated); color:var(--text-1);}
.sidebar nav a.active{
    background:linear-gradient(135deg, var(--amber-soft), var(--violet-soft));
    color:var(--text-1); border-color:var(--line-strong);
}
.sidebar .section-label{font-size:.72rem; text-transform:uppercase; letter-spacing:.08em; color:var(--text-3); margin:18px 12px 8px;}

.main{flex:1; min-width:0;}
.topbar{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 30px; border-bottom:1px solid var(--line);
    position:sticky; top:0; background:rgba(255,255,255,.85); backdrop-filter:blur(10px); z-index:20;
}
.topbar .greet{font-family:var(--font-display); font-size:1.15rem;}
.content{padding:30px;}

.avatar{
    width:40px; height:40px; border-radius:12px; object-fit:cover;
    background:linear-gradient(135deg, var(--violet), var(--cyan));
    display:flex; align-items:center; justify-content:center; font-weight:700; color:#fff;
}
.welcome-text{font-size:.9rem; color:var(--text-2);}
.welcome-text strong{color:var(--text-1);}

/* ---------- Basit sütun grafik (hedef takibi) ---------- */
.bar-chart{display:flex; align-items:flex-end; gap:10px; height:170px; padding-top:10px;}
.bar-chart .bar-col{flex:1; display:flex; flex-direction:column; align-items:center; gap:6px; height:100%;}
.bar-chart .bar-track{
    flex:1; width:100%; display:flex; align-items:flex-end;
    background:var(--bg-deep); border:1px solid var(--line); border-radius:8px; overflow:hidden;
    position:relative;
}
.bar-chart .bar-fill{
    width:100%; border-radius:0;
    background:linear-gradient(180deg, var(--amber), #ffcd6b);
    transition:height .4s ease;
}
.bar-chart .bar-fill.reached{background:linear-gradient(180deg, var(--green), #63e0b4);}
.bar-chart .bar-goal{
    position:absolute; left:0; right:0; border-top:2px dashed var(--violet); opacity:.75;
}
.bar-chart .bar-label{font-size:.72rem; color:var(--text-3); text-align:center;}
.bar-chart .bar-value{font-size:.76rem; font-weight:700;}

/* ---------- Tablo ---------- */
table{width:100%; border-collapse:collapse;}
th{
    text-align:left; font-size:.75rem; text-transform:uppercase; letter-spacing:.06em;
    color:var(--text-3); padding:10px 14px; border-bottom:1px solid var(--line);
}
td{padding:14px; border-bottom:1px solid var(--line); font-size:.92rem;}
tr:hover td{background:rgba(24,31,63,.025);}

/* ---------- Haftalık plan grid ---------- */
.week-grid{display:grid; grid-template-columns:repeat(7,1fr); gap:14px;}
.day-col{
    background:var(--bg-panel); border:1px solid var(--line); border-radius:var(--radius-md);
    padding:14px; min-height:180px;
}
.day-col h4{font-size:.86rem; color:var(--text-2); margin-bottom:10px; font-family:var(--font-body); font-weight:700;}
.task-chip{
    background:var(--bg-elevated); border:1px solid var(--line-strong); border-radius:10px;
    padding:9px 10px; margin-bottom:8px; font-size:.8rem;
}
.task-chip.done{opacity:.5; text-decoration:line-through;}

/* ---------- Giriş / açılış sayfası ---------- */
.hero-split{
    min-height:100vh; display:grid; grid-template-columns:1.1fr 0.9fr;
}
.hero-left{
    padding:60px; display:flex; flex-direction:column; justify-content:center;
    background:
        radial-gradient(700px 420px at 15% 20%, rgba(105,87,224,.10), transparent 60%),
        radial-gradient(600px 400px at 85% 80%, rgba(15,166,188,.08), transparent 60%),
        var(--bg-deep);
    position:relative; overflow:hidden;
}
.hero-left .kicker{color:var(--amber); font-weight:700; font-size:.9rem; margin-bottom:14px;}
.hero-left h1{font-size:clamp(2.1rem, 3.4vw, 3.2rem); line-height:1.08; max-width:560px;}
.hero-left p{color:var(--text-2); max-width:480px; margin-top:18px; font-size:1.05rem;}
.hero-right{
    display:flex; align-items:center; justify-content:center; padding:40px;
    background:var(--bg-panel); border-left:1px solid var(--line);
}
.auth-card{width:100%; max-width:400px;}
.mock-schedule{
    margin-top:40px; transform:perspective(1200px) rotateY(-8deg) rotateX(4deg);
    transform-style:preserve-3d; max-width:480px;
}
.mock-schedule .panel{padding:20px;}
.role-tabs{display:flex; gap:8px; margin-bottom:24px; background:var(--bg-deep); padding:5px; border-radius:12px; border:1px solid var(--line);}
.role-tabs a{flex:1; text-align:center; padding:9px; border-radius:9px; font-weight:700; font-size:.85rem; color:var(--text-2);}
.role-tabs a.active{background:linear-gradient(135deg, var(--amber), #ffcd6b); color:#1c1400;}

/* ---------- Yardımcı düzen sınıfları ---------- */
.flex{display:flex;}
.items-center{align-items:center;}
.justify-between{justify-content:space-between;}
.gap-2{gap:8px;} .gap-3{gap:14px;} .gap-4{gap:20px;}
.grid{display:grid; gap:20px;}
.grid-2{grid-template-columns:1fr 1fr;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.mt-1{margin-top:8px;} .mt-2{margin-top:16px;} .mt-3{margin-top:24px;} .mt-4{margin-top:36px;}
.mb-1{margin-bottom:8px;} .mb-2{margin-bottom:16px;} .mb-3{margin-bottom:24px;}
.w-full{width:100%;}
.text-center{text-align:center;}

.progress{height:8px; border-radius:20px; background:var(--bg-deep); overflow:hidden; border:1px solid var(--line);}
.progress > span{display:block; height:100%; background:linear-gradient(90deg, var(--amber), var(--cyan));}

.alert{padding:14px 16px; border-radius:12px; margin-bottom:18px; font-size:.9rem; border:1px solid;}
.alert-success{background:rgba(26,161,121,.09); border-color:rgba(26,161,121,.28); color:var(--green);}
.alert-error{background:rgba(216,82,76,.09); border-color:rgba(216,82,76,.28); color:var(--red);}
.alert-warning{background:var(--amber-soft); border-color:rgba(232,147,15,.3); color:var(--amber);}

.empty-state{text-align:center; padding:50px 20px; color:var(--text-3);}

/* ---------- Mini gelişim raporu (öğretmen öğrenci kartı) ---------- */
.mini-report{
    background:var(--bg-elevated); border:1px solid var(--line);
    border-radius:12px; padding:12px;
}
.mini-report-head{
    display:flex; justify-content:space-between; align-items:center;
    font-size:.76rem; font-weight:700; color:var(--text-2); margin-bottom:10px;
}
.mini-metrics{display:flex; gap:8px; margin-bottom:10px;}
.mini-metric{
    flex:1; text-align:center; background:var(--bg-panel);
    border:1px solid var(--line); border-radius:10px; padding:8px 4px;
}
.mini-metric .mm-val{
    display:block; font-family:var(--font-display);
    font-size:1.15rem; font-weight:700; line-height:1.1;
}
.mini-metric .mm-label{display:block; font-size:.66rem; color:var(--text-3); margin:1px 0 5px;}
.mini-metric .badge{font-size:.62rem; padding:2px 7px;}

.spark{
    display:flex; align-items:flex-end; gap:3px; height:34px;
    padding:4px 6px; background:var(--bg-panel);
    border:1px solid var(--line); border-radius:9px; margin-bottom:9px;
}
.spark-bar{
    flex:1; border-radius:3px 3px 0 0; min-height:3px;
    background:var(--line-strong); transition:height .3s ease;
}
.spark-bar.now{background:linear-gradient(180deg, var(--amber), #ffcd6b);}

.mini-plan{display:flex; align-items:center; gap:8px; font-size:.74rem;}
.mini-plan strong{color:var(--text-1);}

/* ---------- Ders & konu yönetimi listeleri ---------- */
.subject-list{display:flex; flex-direction:column; gap:6px;}
.subject-row{
    display:flex; align-items:center; gap:8px;
    padding:10px 12px; border-radius:10px;
    background:var(--bg-elevated); border:1px solid var(--line);
    transition:border-color .15s ease;
}
.subject-row:hover{border-color:var(--line-strong);}
.subject-row.active{border-color:var(--amber); background:var(--amber-soft);}
.subject-row.editing{background:var(--bg-panel); border-color:var(--cyan);}
.subject-main{flex:1; min-width:0; display:flex; align-items:center; gap:8px; flex-wrap:wrap; color:var(--text-1);}
.subject-stats{font-size:.74rem;}
.icon-btn{
    width:32px; height:32px; border-radius:8px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
    background:var(--bg-panel); border:1px solid var(--line); color:var(--text-2);
    transition:all .15s ease;
}
.icon-btn:hover{border-color:var(--cyan); color:var(--cyan);}
.icon-btn.danger:hover{border-color:var(--red); color:var(--red);}

/* ---------- Kitapçık bölümleri ---------- */
.section-list{display:flex; flex-direction:column; gap:7px;}
.section-row{
    display:flex; align-items:center; gap:12px; flex-wrap:wrap;
    padding:11px 14px; border-radius:10px;
    background:var(--bg-elevated); border:1px solid var(--line);
}
.section-info{flex:1; display:flex; align-items:center; gap:9px; flex-wrap:wrap;}

/* Cevap anahtarı ızgarası */
.ak-group{margin-bottom:20px;}
.ak-group-head{
    display:flex; align-items:center; gap:10px; flex-wrap:wrap;
    padding:9px 13px; border-radius:9px; margin-bottom:10px;
    background:linear-gradient(135deg, var(--amber-soft), var(--violet-soft));
    border:1px solid var(--line-strong);
}
.ak-grid{display:grid; grid-template-columns:repeat(auto-fill, minmax(104px, 1fr)); gap:8px;}
.ak-cell{
    display:flex; align-items:center; gap:7px;
    padding:6px 9px; border-radius:9px;
    background:var(--bg-elevated); border:1px solid var(--line);
}
.ak-cell.filled{border-color:var(--green); background:rgba(26,161,121,.08);}
.ak-cell .ak-no{font-size:.78rem; font-weight:700; color:var(--text-2); min-width:24px;}
.ak-cell select{padding:6px 4px; font-size:.85rem;}

/* Öğrenci cevap kağıdı bölüm başlığı */
.sheet-section-head{
    display:flex; justify-content:space-between; align-items:center;
    padding:8px 11px; margin:12px 0 8px; border-radius:8px;
    background:linear-gradient(135deg, var(--amber), #ffcd6b);
    color:#1c1400; font-size:.78rem; font-weight:800;
}
.sheet-section-head:first-child{margin-top:0;}
.sheet-section-head span{font-weight:600; opacity:.75;}

/* ---------- Tıklanabilir mesaj rozeti ---------- */
.msg-badge{
    cursor:pointer; transition:transform .15s ease, box-shadow .15s ease;
    text-decoration:none;
}
.msg-badge:hover{
    transform:translateY(-1px);
    box-shadow:0 6px 16px -6px rgba(15,166,188,.45);
}
.msg-badge.has-unread{
    background:var(--amber-soft); color:var(--amber);
    animation:msgPulse 2.4s ease-in-out infinite;
}
@keyframes msgPulse{
    0%,100%{box-shadow:0 0 0 0 rgba(232,147,15,.35);}
    50%{box-shadow:0 0 0 6px rgba(232,147,15,0);}
}

/* ---------- Hedef kitle seçici (test / video görünürlüğü) ---------- */
.audience-picker{
    background:var(--bg-elevated); border:1px solid var(--line);
    border-radius:14px; padding:16px; margin-bottom:18px;
}
.aud-tabs{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:12px;}
.aud-tab{
    display:inline-flex; align-items:center; gap:7px; cursor:pointer; margin:0;
    padding:9px 14px; border-radius:10px; font-size:.85rem; font-weight:700;
    background:var(--bg-panel); border:2px solid var(--line-strong); color:var(--text-2);
    transition:all .15s ease;
}
.aud-tab input{display:none;}
.aud-tab:hover{border-color:var(--cyan); color:var(--cyan);}
.aud-tab.active{
    background:linear-gradient(135deg, var(--amber), #ffcd6b);
    border-color:transparent; color:#1c1400;
}
.aud-panel{
    background:var(--bg-panel); border:1px solid var(--line);
    border-radius:12px; padding:14px;
}
.aud-grades{display:flex; gap:8px; flex-wrap:wrap;}
.aud-chip{
    display:inline-flex; align-items:center; gap:7px; cursor:pointer; margin:0;
    padding:8px 14px; border-radius:20px; font-size:.84rem; font-weight:700;
    background:var(--bg-elevated); border:2px solid var(--line-strong); color:var(--text-2);
    transition:all .15s ease;
}
.aud-chip input{width:auto; margin:0;}
.aud-chip:hover{border-color:var(--cyan);}
.aud-chip:has(input:checked){
    background:var(--cyan-soft); border-color:var(--cyan); color:var(--cyan);
}
.aud-students{
    max-height:260px; overflow-y:auto; display:flex; flex-direction:column; gap:6px;
    border:1px solid var(--line); border-radius:10px; padding:8px; background:var(--bg-deep);
}
.aud-student{
    display:flex; align-items:center; gap:10px; cursor:pointer; margin:0;
    padding:9px 11px; border-radius:9px; background:var(--bg-panel);
    border:1px solid var(--line); transition:all .14s ease;
}
.aud-student input{width:auto; margin:0; flex-shrink:0;}
.aud-student:hover{border-color:var(--cyan);}
.aud-student:has(input:checked){background:var(--amber-soft); border-color:var(--amber);}
.aud-avatar{
    width:28px; height:28px; border-radius:8px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
    background:linear-gradient(135deg, var(--violet), var(--cyan));
    color:#fff; font-weight:800; font-size:.78rem;
}
.aud-name{flex:1; font-size:.88rem; font-weight:600; color:var(--text-1);}
.aud-grade{
    font-size:.74rem; font-weight:700; color:var(--text-2);
    background:var(--bg-elevated); border:1px solid var(--line);
    padding:3px 10px; border-radius:20px; flex-shrink:0;
}

/* Menü ikonu: sadece mobilde görünür, masaüstünde gizli */
.menu-toggle{
    display:none !important;
    background:var(--bg-elevated); border:1px solid var(--line-strong);
    border-radius:10px; padding:8px 10px; color:var(--text-1);
}

@media (max-width: 980px){
    .hero-split{grid-template-columns:1fr;}
    .hero-right{border-left:none; border-top:1px solid var(--line);}
    .mock-schedule{display:none;}
}

@media (max-width: 860px){
    .grid-4{grid-template-columns:repeat(2,1fr);}
    .grid-3{grid-template-columns:repeat(2,1fr);}
    .grid-2{grid-template-columns:1fr;}
    .week-grid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width: 720px){
    .welcome-text{display:none;}
    .sidebar{
        position:fixed; z-index:50; left:0; top:0; transform:translateX(-100%);
        transition:transform .25s ease; box-shadow:var(--shadow-deep);
    }
    .sidebar.open{transform:translateX(0);}
    .menu-toggle{display:inline-flex !important;}
    .content{padding:18px;}
    .topbar{padding:14px 18px;}
    .week-grid{grid-template-columns:1fr;}
}

@media (max-width: 520px){
    .grid-4, .grid-3{grid-template-columns:1fr 1fr;}
    .hero-left{padding:34px 22px;}
}