@import url('https://fonts.googleapis.com/css2?family=Marhey:wght@400;700&family=Harmattan:wght@400;700&display=swap');

/* ==========================================================================
   1. GENEL AYARLAR VE TEMA (kidefarapca.com Orijinal Tasarımına Uygun)
   ========================================================================== */
:root {
    --primary-color: #F39C12;
    --secondary-color: #16A085;
    --accent-color: #E67E22;
    --bg-color: #F7F9FC;
    --text-color: #333;
    --card-bg: #fff;
    --danger-color: #EF5350;
    --success-color: #20C997;
}

html { box-sizing: border-box; scroll-behavior: smooth; }
*, *:before, *:after { box-sizing: inherit; }

body {
    font-family: 'Marhey', sans-serif;
    margin: 0;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--bg-color);
    background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"%3E%3Cg fill-rule="evenodd"%3E%3Cg fill="%234D96FF" fill-opacity="0.05"%3E%3Cpath opacity=".5" d="M96 95h4v1h-4v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9zm-1 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm9-10v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9z"/%3E%3Cpath d="M6 5V0h1v5h4V0h1v5h4V0h1v5h4V0h1v5h4V0h1v5h4V0h1v5h4V0h1v5h4V0h1v5h4V0h1v5h5v1h-5v4h5v1h-5v4h5v1h-5v4h5v1h-5v4h5v1h-5v4h5v1h-5v4h5v1h-4v5h-1v-5h-4v5h-1v-5h-4v5h-1v-5h-4v5h-1v-5h-4v5H6v-1h4v-4H6v-1h4v-4H6v-1h4v-4H6v-1h4v-4H6V5z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
}

.container {
    max-width: 1280px;
    padding: 15px;
    margin: 25px auto 0;
}

/* Sayfa Geçiş Yönetimi */
.app-section {
    animation: fadeIn 0.4s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Standart Kart Yapısı (Eski glass-card yerine) */
.glass-card, .dark-box {
    background: #fff;
    padding: 20px;
    margin-top: 15px;
    border-radius: 15px;
    border: 1px solid #E9EEF5;
    box-shadow: 0 6px 12px rgba(0,0,0,.08);
    color: #333;
    transition: transform 0.3s, box-shadow 0.3s;
}

.glass-card h2, .glass-card h3, .glass-card h4,
.dark-box h2, .dark-box h3, .dark-box h4 {
    color: var(--secondary-color);
    margin-top: 0;
}

/* ==========================================================================
   2. HEADER
   ========================================================================== */
header {
    background: linear-gradient(90deg, #FFC107 0%, #F39C12 50%, #EF5350 100%);
    color: #fff;
    padding: 15px 20px;
    border-bottom: 2px solid #E53935;
    box-shadow: 0 4px 8px rgba(0,0,0,.1);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

header h1 {
    font-family: 'Marhey', sans-serif;
    font-size: 2.2em;
    margin: 0;
    font-weight: 700;
    color: white !important;
}

header svg { stroke: white; }

#header-back-icon, #header-home-icon {
    width: 32px;
    height: 32px;
    stroke-width: 3;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
    transition: transform 0.2s;
}

#header-back-icon:hover, #header-home-icon:hover {
    transform: scale(1.15);
}

.user-controls { display: flex; align-items: center; gap: 15px; }
.user-info { font-weight: 700; font-size: 0.95rem; color: #fff; }

/* ==========================================================================
   MAXIMIZED MODE (Browser tab fullscreen instead of OS fullscreen)
   ========================================================================== */
#live-modal-content.maximized {
    height: 100dvh !important;
    max-height: 100dvh !important;
    max-width: 100vw !important;
    width: 100vw !important;
    margin: 0 !important;
    border: none !important;
    border-radius: 0 !important;
}

#live-modal-content.maximized #live-flex-container {
    height: calc(100dvh - 60px) !important;
}

/* ==========================================================================
   3. BUTONLAR VE FORMLAR
   ========================================================================== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 700;
    font-family: 'Marhey', sans-serif;
    transition: all 0.3s;
    font-size: 1em;
    box-shadow: 0 4px 12px rgba(0,0,0,.2);
}

.btn-primary { background: var(--primary-color); color: white; }
.btn-secondary { background: var(--secondary-color); color: white; }
.btn-success { background: var(--success-color); color: white; }
.btn-danger { background: var(--danger-color); color: white; }

.btn:hover { 
    transform: translateY(-3px) scale(1.05); 
    box-shadow: 0 6px 16px rgba(0,0,0,.25); 
}

.form-group { margin-bottom: 20px; text-align: left; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 700; font-size: 14px; color: #555; }
.form-group input, .form-group select { 
    width: 100%; 
    padding: 12px; 
    border: 1px solid #E9EEF5; 
    border-radius: 12px; 
    box-sizing: border-box;
    background: #fff;
    color: #333;
    font-family: 'Marhey', sans-serif;
    font-size: 15px;
    transition: all 0.3s;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(243, 156, 18, 0.2);
}

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.highlight { color: var(--accent-color); font-weight: bold; }

/* ==========================================================================
   4. KARTLAR (PAKETLER) VE İÇERİK
   ========================================================================== */
.package-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 15px;
}

.package-card {
    background: #fff;
    border: 1px solid #E9EEF5;
    border-radius: 12px;
    padding: 20px;
    text-align: left;
    box-shadow: 0 4px 8px rgba(0,0,0,.08);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    position: relative;
}

@media (max-width: 800px) {
    .package-card {
        flex-direction: column;
        align-items: stretch;
    }
}

.package-card:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 16px rgba(0,0,0,.12);
    z-index: 10;
}

.package-card.selected {
    border: 3px solid var(--primary-color) !important;
    background-color: #FFF9E6 !important;
    transform: scale(1.02);
    box-shadow: 0 8px 20px rgba(243, 156, 18, 0.3);
    z-index: 10;
}

/* Orijinal tasarımdaki renkli kartlara benzetmek için (9n+1 mantığı) */
.package-grid > .package-card:nth-of-type(9n+1) { background-color: #EBF5FF; } 
.package-grid > .package-card:nth-of-type(9n+2) { background-color: #F4F0FF; } 
.package-grid > .package-card:nth-of-type(9n+3) { background-color: #FFF9E6; } 
.package-grid > .package-card:nth-of-type(9n+4) { background-color: #FFF4E8; } 
.package-grid > .package-card:nth-of-type(9n+5) { background-color: #E6F7FF; } 
.package-grid > .package-card:nth-of-type(9n+6) { background-color: #E6FAF5; } 

.pkg-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 10px; }
.pkg-header h4 { margin: 0; font-size: 1.3rem; font-weight: 700; color: #27AE60; }

.badge { padding: 6px 12px; border-radius: 20px; font-size: 0.85em; font-weight: 700; white-space: nowrap; text-transform: uppercase;}
.badge-price { background: #FFC107; color: #333; }
.badge-success { background: #20C997; color: #fff; }

.pkg-duration { font-size: 0.9em; color: #555; font-weight: 600; margin-bottom: 15px; }
.pkg-desc { font-size: 1em; color: #555; line-height: 1.6; margin-bottom: 20px; flex-grow:1;}

.pkg-requirements, .pkg-target {
    background: rgba(255,255,255,0.6);
    padding: 10px 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-size: 0.9em;
}
.pkg-requirements strong { color: #F39C12; }
.pkg-requirements ul { margin: 8px 0 0 0; padding-left: 20px; color: #555; }
.pkg-target strong { color: #16A085; }
.pkg-target p { margin: 8px 0 0 0; color: #555; }

/* Online Paket Kartları */
.online-package-card {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 15px; cursor: pointer; transition: 0.3s;
    background: #fff;
    border: 1px solid #E9EEF5;
    border-radius: 12px;
    padding: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,.08);
}
.online-package-card:hover { transform: translateX(10px); box-shadow: 0 8px 16px rgba(0,0,0,.12); }
.online-package-card.selected { border: 2px solid var(--primary-color); background: #FFF9E6; }
.online-package-info h4 { margin: 0 0 5px 0; color: #27AE60; font-size: 1.2rem; }
.online-package-info p { margin: 0; font-size: 0.9rem; color: #555; }
.online-package-price { font-weight: 700; color: #F39C12; font-size: 1.2rem; background: #FFF4E8; padding: 5px 10px; border-radius: 10px;}

/* ==========================================================================
   5. CHECKOUT (TEK SAYFA ÖDEME & KAYIT)
   ========================================================================== */
.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    align-items: start;
}

@media (max-width: 800px) {
    .checkout-grid { grid-template-columns: 1fr; }
}

.iban-box {
    text-align: center;
    background: #FFF9E6;
    border: 2px solid #FFC107;
}
.iban-box h4 { margin-top: 0; color: #E67E22; font-size: 1.2rem; }
.iban-number {
    font-size: 1.4rem;
    letter-spacing: 2px;
    font-weight: 700;
    color: #333;
    padding: 15px;
    background: #fff;
    border-radius: 10px;
    margin: 20px 0;
    border: 1px dashed #ccc;
}

.checkout-pkg-card {
    background: #E8F8F5;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
    border: 1px solid #2ecc71;
}
.checkout-pkg-card h4 { margin: 0 0 10px 0; font-size: 1.2rem; color:#16A085;}
.checkout-pkg-card p { color: #555; font-size: 0.9rem; }
.checkout-price { font-size: 1.5rem; font-weight: bold; color: #E67E22; margin-top: 15px; text-align: right; }

.auth-toggle-text { cursor: pointer; color: #EF5350; font-weight: bold; text-decoration: underline; margin-left: 5px; }

/* ==========================================================================
   6. TAKVİM (CALENDAR)
   ========================================================================== */
.day-group { margin-bottom: 25px; }
.day-title { background: #FFC107; color: #333; padding: 8px 15px; border-radius: 20px; font-weight: 700; margin-bottom: 15px; display: inline-block; font-size: 1rem; text-transform: uppercase;}
details.day-group summary {
    list-style: none;
    cursor: pointer;
    outline: none;
    display: inline-flex;
    align-items: center;
}
details.day-group summary::-webkit-details-marker {
    display: none;
}
details.day-group summary::after {
    content: "▼";
    margin-left: 10px;
    font-size: 0.8rem;
    color: #333;
}
details.day-group[open] summary::after {
    content: "▲";
}
details.day-group .slots-grid {
    margin-top: 5px;
}
.slots-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; }
.slot { 
    padding: 12px 5px; border-radius: 10px; text-align: center; cursor: pointer; 
    transition: 0.3s; font-size: 0.9rem; position: relative; font-weight: 700;
    border: 1px solid #E9EEF5;
}

.slot.musait { background: #E6FAF5; color: #16A085; }
.slot.musait:hover { background: #d1f2e6; transform: translateY(-2px); box-shadow: 0 4px 8px rgba(0,0,0,.05);}
.slot.dolu { background: #FFF0F0; color: #EF5350; cursor: not-allowed; opacity: 0.8; }
.slot.selected { background: #F39C12 !important; color: white !important; box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4); transform: scale(1.05); border-color:#F39C12;}
.slot.break { background: #F0F4F8; color: #999; cursor: default; }

/* ==========================================================================
   7. MODAL (GİRİŞ YAP POPUP)
   ========================================================================== */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    display: none; align-items: center; justify-content: center; z-index: 1000;
}
.modal-content {
    background: #fff;
    width: 90%; max-width: 450px;
    border-radius: 24px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    border: 2px solid #E9EEF5;
    position: relative;
    padding: 30px;
    max-height: 90vh;
    overflow-y: auto;
}
/* Profil "Kişisel Bilgilerim" akordiyonu */
.profile-accordion > summary { list-style: none; outline: none; }
.profile-accordion > summary::-webkit-details-marker { display: none; }
.profile-accordion > summary::marker { content: ""; }
.profile-accordion[open] > summary .acc-chevron { transform: rotate(90deg); }

.modal-close {
    position: sticky; top: 0; float: right; z-index: 20;
    margin: -10px -10px 0 0;
    width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
    background: #fff; border-radius: 50%;
    cursor: pointer; color: #999; font-size: 1.5rem; transition: 0.3s;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12);
}
.modal-close:hover { color: #333; }

/* Role Buttons in Modal */
.role-btn {
    flex: 1; padding: 12px; border: 2px solid transparent; border-radius: 12px;
    background: #F0F2F5; color: #777; cursor: pointer; font-size: 14px; transition: 0.3s; font-family: 'Marhey', sans-serif;
}
.role-btn.active-role { background: #E8F0FE; color: #1a73e8; border-color: #1a73e8; font-weight: 700; }

/* ==========================================================================
   8. DİĞER (KAZANIM & ADMIN TABLE)
   ========================================================================== */
.kazanim-timeline { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; }
.kazanim-node { width: 40px; height: 40px; border-radius: 50%; background: #E9EEF5; display: flex; align-items: center; justify-content: center; font-weight: 700; color: #555; transition: 0.3s;}
.kazanim-node.active { background: #F39C12; color: white; transform: scale(1.1); box-shadow: 0 0 10px rgba(243, 156, 18, 0.5);}
.kazanim-node.completed { background: #20C997; color: #fff; }

.small-timeline .kazanim-node { width: 26px; height: 26px; font-size: 11px; margin: 2px; }
.small-timeline .kazanim-node.active { transform: scale(1.2); }


.admin-table { width: 100%; border-collapse: collapse; text-align: left; background: #fff; border-radius: 12px; overflow: hidden; border: 1px solid #E9EEF5;}
.admin-table th { background: #F0F4F8; padding: 15px; color: #16A085; font-weight: 700; }
.admin-table td { padding: 15px; border-bottom: 1px solid #E9EEF5; }
.admin-table tr:hover td { background: #FAFAFA; }

.admin-details {
    margin-bottom: 15px;
    background: #F0F4F8;
    border-radius: 12px;
    padding: 10px 15px;
    border: 1px solid #E9EEF5;
    transition: 0.3s;
}
.admin-details[open] {
    background: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.admin-summary {
    font-size: 1.2rem;
    font-weight: 700;
    color: #16A085;
    cursor: pointer;
    list-style: none;
    outline: none;
    display: flex;
    align-items: center;
}
.admin-summary::-webkit-details-marker {
    display: none;
}
.admin-summary::before {
    content: "▶";
    margin-right: 10px;
    font-size: 0.9rem;
    color: #F39C12;
    transition: transform 0.3s;
}
.admin-details[open] .admin-summary::before {
    transform: rotate(90deg);
}

/* Draggable Camera */
#draggable-camera { cursor: grab; transition: box-shadow 0.2s; border: 3px solid #FFC107; box-shadow: 0 10px 30px rgba(0,0,0,0.3); border-radius: 12px;}
#draggable-camera:active { cursor: grabbing; }

/* Mobil Uyumlu Eklemeler */
@media (max-width:576px){
  header { flex-direction:column; gap:12px; padding: 12px; align-items: stretch; }
  header h1 { font-size: 1.25em; margin: 0; text-align: left; white-space: nowrap; }
  .user-controls { width: 100%; }
  .user-controls:first-child { justify-content: flex-start; flex-wrap: nowrap; gap: 8px; }
  .user-controls:last-child { justify-content: center; flex-wrap: wrap; gap: 10px; }
  #header-back-icon, #header-home-icon { margin: 0; flex-shrink: 0; width: 28px; height: 28px; }
}

/* Profil Butonu Tasarımı */
.user-profile-btn {
    cursor: pointer;
    font-weight: 600;
    color: white;
    background: rgba(255, 255, 255, 0.25);
    padding: 8px 18px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.user-profile-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* ==========================================================================
   LIVE CLASS & CALENDAR UI
   ========================================================================== */
.live-dot {
    width: 12px;
    height: 12px;
    background-color: #EF5350;
    border-radius: 50%;
    display: inline-block;
    animation: blink 1.5s infinite;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes blink {
    0% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(239,83,80, 0.7); }
    50% { opacity: 0.5; transform: scale(1.1); box-shadow: 0 0 0 5px rgba(239,83,80, 0); }
    100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 rgba(239,83,80, 0); }
}

.student-calendar {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 15px; /* Scrollbar için boşluk */
    -webkit-overflow-scrolling: touch; /* Mobilde yumuşak kaydırma */
    align-items: stretch;
}

.calendar-day {
    flex: 0 0 auto; 
    min-width: 140px; /* Daha geniş alan */
    width: 140px;
    box-sizing: border-box;
    margin-right: 15px; /* Kutu araları */
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 15px 10px;
    text-align: center;
    min-height: 150px;
    display: flex;
    flex-direction: column;
}

.calendar-day.has-class {
    border-color: #16A085;
    background: #eef7ff;
}

.calendar-day-title {
    font-weight: bold;
    color: #555;
    margin-bottom: 10px;
    border-bottom: 1px solid #ddd;
    padding-bottom: 5px;
}

.calendar-slot {
    background: #fff;
    padding: 8px;
    border-radius: 8px;
    margin-bottom: 8px;
    font-size: 0.9rem;
    border: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: relative;
}

.calendar-slot .live-dot {
    position: absolute;
    top: -5px;
    right: -5px;
    margin: 0;
}

.live-class-room {
    width: 100%;
    height: 100%;
    background: #222;
    border-radius: 12px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.live-class-room > video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.live-class-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 10;
}

.live-class-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.2);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: background 0.3s;
}

.live-class-btn:hover {
    background: rgba(255,255,255,0.4);
}

.live-class-btn.end-call {
    background: #EF5350;
}

/* ==========================================================================
   SCREEN SHARE PIP & TOAST UI
   ========================================================================== */
.live-class-room #screen-video {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain; /* Tam ekranda videonun kesilmemesi için contain yapıyoruz */
    background: #000;
    z-index: 2; /* Paylaşım önizlemesi bekleme mesajının üstünde, katılımcı grid'inin altında */
}



.toast-message {
    visibility: hidden;
    min-width: 250px;
    background-color: #20C997;
    color: #fff;
    text-align: center;
    border-radius: 8px;
    padding: 16px;
    position: fixed;
    z-index: 3000;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    font-size: 1.1rem;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.toast-message.show {
    visibility: visible;
    animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

@keyframes fadein {
    from {bottom: 0; opacity: 0;}
    to {bottom: 30px; opacity: 1;}
}

@keyframes fadeout {
    from {bottom: 30px; opacity: 1;}
    to {bottom: 0; opacity: 0;}
}

/* ==========================================================================
   LIVE CLASS SIDEBAR & FULLSCREEN
   ========================================================================== */
.live-sidebar {
    width: 0;
    background: #1a1a1a;
    transition: width 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border-left: 1px solid #333;
}

.live-sidebar.open {
    width: 300px;
}

.sidebar-tabs {
    display: flex;
    background: #222;
    border-bottom: 1px solid #333;
}

.sidebar-tab {
    flex: 1;
    text-align: center;
    padding: 15px 0;
    cursor: pointer;
    color: #888;
    font-weight: bold;
    transition: 0.2s;
}

.sidebar-tab:hover {
    color: white;
}

.sidebar-tab.active {
    color: #20C997;
    border-bottom: 2px solid #20C997;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    color: white;
}

.participant-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #333;
    gap: 10px;
}

.participant-item .avatar {
    width: 35px;
    height: 35px;
    background: #16A085;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

.chat-message {
    background: #333;
    padding: 10px;
    border-radius: 8px;
    position: relative;
}

.chat-message .sender {
    font-size: 0.8rem;
    color: #20C997;
    margin-bottom: 5px;
    font-weight: bold;
}

/* Tooltip for Screen Share */
.tooltip-container .tooltip-text {
    visibility: hidden;
    width: 220px;
    background-color: rgba(239,83,80, 0.9);
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px;
    position: absolute;
    z-index: 10;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.8rem;
    pointer-events: none;
}

.tooltip-container .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(239,83,80, 0.9) transparent transparent transparent;
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Fullscreen mode */
:fullscreen #live-modal-content {
    width: 100vw !important;
    height: 100vh !important;
    max-width: 100vw !important;
    border-radius: 0;
}

:fullscreen #live-flex-container {
    height: calc(100vh - 60px) !important;
}

/* ==========================================================================
   UNIFIED PARTICIPANT VIDEO GRID (NO SCREEN SHARE)
   ========================================================================== */
.main-video-grid {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-auto-rows: 1fr;
    gap: 15px;
    padding: 20px;
    box-sizing: border-box;
    z-index: 5;
    background: #222;
}

/* ==========================================================================
   PARTICIPANT VIDEO BOX
   ========================================================================== */
.participant-box {
    position: relative;
    background: #000;
    border-radius: 12px;
    border: 2px solid rgba(255,255,255,0.1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    width: 100%;
    height: 100%;
}

.participant-box video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: #000;
}

/* ==========================================================================
   SCREEN SHARE MODE (PiP PIPELINE)
   ========================================================================== */
.live-class-room.screen-shared .main-video-grid {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 20px;
    right: 20px;
    width: auto;
    height: auto;
    gap: 10px;
    padding: 0;
    background: transparent;
    z-index: 10;
}

.live-class-room.screen-shared .participant-box {
    width: 180px;
    height: 120px;
    border-radius: 10px;
}

/* ==========================================================================
   CAMERA OFF STATES
   ========================================================================== */
.participant-box.camera-off video {
    display: none;
}

.camera-off-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #f39c12;
    color: white;
    font-size: 2.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Kutu küçüldüğünde (PiP) avatar da biraz küçülmeli */
.live-class-room.screen-shared .camera-off-avatar {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
}

.participant-label {
    position: absolute;
    bottom: 5px;
    left: 10px;
    background: rgba(0,0,0,0.7);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    color: white;
    z-index: 2;
}

@keyframes popIn {
    0% { transform: scale(0.5); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* ==========================================================================
   MOBILE OPTIMIZATIONS
   ========================================================================== */
@media (max-width: 600px) {
    /* Make controls smaller */
    .live-class-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .live-class-controls {
        gap: 8px;
        padding: 8px;
        border-radius: 20px;
        bottom: 10px;
    }

    /* Small PiP for local video */
    .live-class-room.screen-shared #local-video {
        width: 100px;
        height: 75px;
        bottom: 60px;
        right: 10px;
        border-width: 1px;
    }

    /* Smaller Grid for Mobile PiP */
    .live-class-room.screen-shared .main-video-grid {
        top: 10px;
        right: 10px;
        gap: 5px;
    }

    .live-class-room.screen-shared .participant-box {
        width: 100px;
        height: 75px;
        border-radius: 6px;
    }

    .participant-label {
        font-size: 0.6rem;
        padding: 1px 4px;
        bottom: 2px;
        left: 5px;
    }

    /* Sidebar smaller */
    .live-sidebar.open {
        width: 250px;
    }

    .sidebar-tab {
        padding: 10px 0;
        font-size: 0.9rem;
    }

    /* Maximized fixes for mobile */
    #live-modal-content.maximized {
        width: 100vw !important;
        height: 100dvh !important;
    }
    
    #live-modal-content.maximized #live-flex-container {
        height: calc(100dvh - 50px) !important; /* Smaller header */
    }
    
    #live-modal-content.maximized #screen-video {
        object-fit: cover !important;
        width: 100% !important;
        height: 100% !important;
    }
}