/* EduIndex EAD v2 — Frontend Styles */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --ead-primary:   #1a56db;
    --ead-primary-h: #1746c0;
    --ead-accent:    #f59e0b;
    --ead-accent-h:  #d97706;
    --ead-success:   #10b981;
    --ead-dark:      #0f1b2d;
    --ead-sidebar:   #0d1a2e;
    --ead-sidebar2:  #142136;
    --ead-text:      #e2e8f0;
    --ead-muted:     #7a90ab;
    --ead-border:    #1e3050;
    --ead-bg:        #f0f4f8;
    --ead-card:      #ffffff;
    --ead-body-text: #1e293b;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ════════════════════════════════════════
   LOGIN
════════════════════════════════════════ */
.eiad-login-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f1b2d 0%, #1a3a6b 100%);
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    font-family: 'Sora', sans-serif;
}
.eiad-login-box {
    background: #fff;
    border-radius: 20px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
.eiad-login-logo {
    text-align: center;
    font-size: 28px;
    font-weight: 800;
    color: var(--ead-primary);
    letter-spacing: -1px;
    margin-bottom: 4px;
}
.eiad-login-logo span { color: var(--ead-accent); }
.eiad-login-tagline {
    text-align: center;
    color: #94a3b8;
    font-size: 13px;
    margin-bottom: 32px;
}
.eiad-field { margin-bottom: 18px; }
.eiad-field label { display: block; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; color: #64748b; margin-bottom: 7px; }
.eiad-field input {
    width: 100%; padding: 12px 16px;
    border: 2px solid #e2e8f0; border-radius: 10px;
    font-size: 15px; font-family: 'Inter', sans-serif;
    outline: none; transition: border-color .2s;
    color: var(--ead-body-text);
}
.eiad-field input:focus { border-color: var(--ead-primary); }
.eiad-submit {
    width: 100%; padding: 14px;
    background: var(--ead-primary); color: #fff;
    border: none; border-radius: 10px;
    font-size: 15px; font-weight: 700;
    font-family: 'Sora', sans-serif;
    cursor: pointer; transition: background .2s;
    margin-top: 4px;
}
.eiad-submit:hover { background: var(--ead-primary-h); }
.eiad-error {
    background: #fee2e2; color: #991b1b;
    padding: 10px 14px; border-radius: 8px;
    font-size: 13px; margin-bottom: 16px;
    display: none;
}
.eiad-error.show { display: block; }
.eiad-login-footer { text-align: center; margin-top: 20px; font-size: 13px; color: #94a3b8; }
.eiad-login-footer a { color: var(--ead-primary); font-weight: 600; text-decoration: none; }

/* ════════════════════════════════════════
   STUDENT AREA (course grid)
════════════════════════════════════════ */
.eiad-area {
    max-width: 1140px; margin: 0 auto;
    padding: 40px 20px;
    font-family: 'Sora', sans-serif;
}
.eiad-area-top {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 36px; flex-wrap: wrap; gap: 12px;
}
.eiad-greeting { font-size: 24px; font-weight: 800; color: var(--ead-body-text); }
.eiad-greeting span { color: var(--ead-primary); }
.eiad-logout {
    background: none; border: 2px solid #e2e8f0;
    padding: 8px 18px; border-radius: 8px;
    font-size: 13px; font-weight: 600;
    color: #64748b; cursor: pointer;
    transition: all .2s; font-family: 'Sora', sans-serif;
}
.eiad-logout:hover { border-color: #ef4444; color: #ef4444; }

.eiad-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(310px,1fr)); gap: 24px; }

.eiad-course-card {
    background: #fff; border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,.08);
    transition: transform .25s, box-shadow .25s;
    font-family: 'Inter', sans-serif;
}
.eiad-course-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,.14); }
.eiad-course-thumb {
    height: 180px; background: linear-gradient(135deg,#1a56db,#0f172a);
    display: flex; align-items: center; justify-content: center;
    font-size: 52px; overflow: hidden; position: relative;
}
.eiad-course-thumb img { width:100%; height:100%; object-fit:cover; }
.eiad-course-body { padding: 20px; }
.eiad-course-title { font-size: 16px; font-weight: 700; color: var(--ead-body-text); margin-bottom: 6px; font-family: 'Sora',sans-serif; }
.eiad-course-meta  { font-size: 12px; color: #94a3b8; margin-bottom: 14px; }
.eiad-pbar { height: 6px; background: #e2e8f0; border-radius: 3px; overflow: hidden; margin-bottom: 16px; }
.eiad-pbar-fill { height:100%; background: var(--ead-success); border-radius:3px; transition: width .4s; }
.eiad-btn-enter {
    display: block; text-align: center;
    background: var(--ead-primary); color: #fff;
    padding: 11px; border-radius: 9px;
    font-weight: 700; font-size: 14px;
    text-decoration: none; transition: background .2s;
    font-family: 'Sora', sans-serif;
}
.eiad-btn-enter:hover { background: var(--ead-primary-h); color:#fff; }

.eiad-empty { text-align: center; padding: 80px 20px; color: #94a3b8; font-family: 'Inter',sans-serif; }
.eiad-empty-icon { font-size: 56px; margin-bottom: 14px; }

/* ════════════════════════════════════════
   PLAYER PAGE — 2-column layout
════════════════════════════════════════ */
.eiad-player-page {
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: calc(100vh - 60px);
    font-family: 'Inter', sans-serif;
    background: #0b1524;
}
@media(max-width: 900px) {
    .eiad-player-page { grid-template-columns: 1fr; }
    .eiad-sidebar { order: 2; max-height: 60vh; }
    .eiad-main    { order: 1; }
}

/* ── Sidebar ── */
.eiad-sidebar {
    background: var(--ead-sidebar);
    overflow-y: auto;
    border-right: 1px solid var(--ead-border);
    display: flex; flex-direction: column;
}
.eiad-sidebar-head {
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--ead-border);
    position: sticky; top: 0; z-index: 10;
    background: var(--ead-sidebar);
}
.eiad-sidebar-logo {
    font-family: 'Sora',sans-serif;
    font-size: 16px; font-weight: 800;
    color: #fff; letter-spacing: -.5px;
    margin-bottom: 2px;
}
.eiad-sidebar-logo span { color: var(--ead-accent); }
.eiad-sidebar-course {
    font-size: 11px; color: var(--ead-muted);
    font-weight: 500; white-space: nowrap;
    overflow: hidden; text-overflow: ellipsis;
}

/* Mode toggle: Video / Áudio */
.eiad-mode-toggle {
    display: flex; gap: 6px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--ead-border);
}
.eiad-mode-btn {
    flex: 1; padding: 7px 0;
    border-radius: 8px; border: none;
    font-size: 13px; font-weight: 700;
    cursor: pointer; transition: all .2s;
    font-family: 'Sora', sans-serif;
    background: transparent; color: var(--ead-muted);
}
.eiad-mode-btn.active {
    background: var(--ead-accent);
    color: #0f1b2d;
}

/* Module accordion */
.eiad-module {
    border-bottom: 1px solid var(--ead-border);
}
.eiad-module-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 13px 18px;
    cursor: pointer;
    user-select: none;
    transition: background .15s;
}
.eiad-module-header:hover { background: rgba(255,255,255,.04); }
.eiad-module-name {
    font-size: 12px; font-weight: 700;
    text-transform: uppercase; letter-spacing: .7px;
    color: var(--ead-accent);
}
.eiad-module-chevron {
    color: var(--ead-muted); font-size: 11px;
    transition: transform .25s;
}
.eiad-module.open .eiad-module-chevron { transform: rotate(180deg); }
.eiad-module-lessons { display: none; }
.eiad-module.open .eiad-module-lessons { display: block; }

/* Lesson item */
.eiad-lesson-item {
    display: flex; align-items: center; gap: 10px;
    padding: 11px 18px 11px 24px;
    cursor: pointer; text-decoration: none;
    transition: background .15s;
    border-left: 3px solid transparent;
    color: var(--ead-text);
}
.eiad-lesson-item:hover { background: rgba(255,255,255,.05); color: #fff; }
.eiad-lesson-item.active {
    background: rgba(26,86,219,.2);
    border-left-color: var(--ead-accent);
    color: #fff;
}
.eiad-lesson-item.done .eiad-li-num { color: var(--ead-success); }
.eiad-li-num  { font-size: 11px; color: var(--ead-muted); min-width: 20px; flex-shrink: 0; }
.eiad-li-body { flex: 1; min-width: 0; }
.eiad-li-title { font-size: 13px; font-weight: 500; line-height: 1.35; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.eiad-li-dur   { font-size: 11px; color: var(--ead-muted); margin-top: 2px; }
.eiad-li-check { color: var(--ead-success); font-size: 14px; flex-shrink: 0; }

/* Sidebar footer */
.eiad-sidebar-footer {
    margin-top: auto;
    padding: 14px 16px;
    border-top: 1px solid var(--ead-border);
}
.eiad-back-link {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: var(--ead-muted);
    text-decoration: none; transition: color .2s;
}
.eiad-back-link:hover { color: #fff; }

/* ── Main content ── */
.eiad-main {
    background: #0b1524;
    overflow-y: auto;
    padding: 0;
}

/* Top bar */
.eiad-topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 28px;
    background: var(--ead-dark);
    border-bottom: 1px solid var(--ead-border);
    flex-wrap: wrap; gap: 10px;
}
.eiad-lesson-label {
    font-family: 'Sora',sans-serif;
    font-size: 17px; font-weight: 800;
    color: #fff;
}
.eiad-lesson-sublabel {
    font-size: 12px; color: var(--ead-muted); margin-top: 2px;
}
.eiad-topbar-actions { display: flex; gap: 8px; }
.eiad-btn-sm {
    padding: 7px 14px; border-radius: 7px;
    font-size: 12px; font-weight: 700;
    cursor: pointer; border: none;
    font-family: 'Sora', sans-serif;
    transition: all .2s;
}
.eiad-btn-accent  { background: var(--ead-accent); color: #0f1b2d; }
.eiad-btn-accent:hover { background: var(--ead-accent-h); }
.eiad-btn-ghost   { background: rgba(255,255,255,.1); color: #fff; }
.eiad-btn-ghost:hover { background: rgba(255,255,255,.18); }
.eiad-btn-success { background: var(--ead-success); color: #fff; }

/* ── Secure YouTube player ── */
.eiad-player-wrap {
    padding: 24px 28px 0;
}
.eiad-player-box {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #000;
    border-radius: 14px;
    overflow: hidden;
    user-select: none;
}
.eiad-player-box iframe {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    border: none;
    pointer-events: none;
}
.eiad-shield {
    position: absolute; inset: 0; z-index: 10;
    background: transparent; cursor: default;
}
/* Watermark */
.eiad-wm {
    position: absolute; z-index: 20;
    pointer-events: none; white-space: nowrap;
    text-shadow: 1px 1px 4px rgba(0,0,0,.9);
    transition: left .6s ease, top .6s ease;
    user-select: none; font-family: 'Inter', sans-serif;
}
/* Custom player controls */
.eiad-controls {
    position: absolute; bottom: 0; left: 0; right: 0;
    z-index: 30;
    background: linear-gradient(transparent, rgba(0,0,0,.85));
    padding: 32px 16px 12px;
    display: flex; align-items: center; gap: 10px;
    opacity: 0; transition: opacity .3s;
}
.eiad-player-box:hover .eiad-controls { opacity: 1; }
.eiad-ctrl {
    background: none; border: none; color: #fff;
    font-size: 18px; cursor: pointer; padding: 4px;
    transition: opacity .2s; flex-shrink: 0;
}
.eiad-ctrl:hover { opacity: .75; }
.eiad-track {
    flex: 1; height: 4px; background: rgba(255,255,255,.25);
    border-radius: 2px; cursor: pointer; position: relative;
}
.eiad-track-fill { height:100%; background: var(--ead-accent); border-radius:2px; pointer-events:none; }
.eiad-time { color:#fff; font-size:12px; font-family:monospace; flex-shrink: 0; }
.eiad-complete-btn {
    background: var(--ead-success); color:#fff;
    border: none; padding: 6px 12px; border-radius: 7px;
    font-size: 12px; font-weight: 700; cursor: pointer;
    font-family: 'Sora',sans-serif; flex-shrink: 0;
    transition: background .2s;
}
.eiad-complete-btn.done { background: #4b5563; cursor: default; }

/* Audio player */
.eiad-audio-wrap {
    padding: 40px 28px 0; display: none;
}
.eiad-audio-box {
    background: var(--ead-sidebar2);
    border-radius: 14px; padding: 36px;
    display: flex; flex-direction: column; align-items: center; gap: 18px;
    border: 1px solid var(--ead-border);
}
.eiad-audio-icon { font-size: 56px; }
.eiad-audio-title { font-size: 18px; font-weight: 700; color: #fff; font-family: 'Sora',sans-serif; text-align:center; }
audio.eiad-audio { width: 100%; max-width: 480px; border-radius: 8px; }

/* Content area below player */
.eiad-content-area { padding: 20px 28px 40px; }
.eiad-tabs-bar {
    display: flex; gap: 4px;
    border-bottom: 2px solid var(--ead-border);
    margin-bottom: 20px;
}
.eiad-tab-btn {
    padding: 9px 18px; background: none; border: none;
    font-size: 13px; font-weight: 700;
    color: var(--ead-muted); cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px; transition: all .2s;
    font-family: 'Sora',sans-serif;
}
.eiad-tab-btn.active { color: var(--ead-accent); border-bottom-color: var(--ead-accent); }
.eiad-tab-panel { display: none; }
.eiad-tab-panel.active { display: block; }

/* Description tab */
.eiad-desc {
    color: var(--ead-text); font-size: 14px; line-height: 1.75;
}

/* Materials tab */
.eiad-materials-list { display: flex; flex-direction: column; gap: 10px; }
.eiad-material-item {
    display: flex; align-items: center; gap: 14px;
    background: var(--ead-sidebar2);
    border: 1px solid var(--ead-border);
    border-radius: 10px; padding: 14px 18px;
    text-decoration: none; color: var(--ead-text);
    transition: background .2s, border-color .2s;
}
.eiad-material-item:hover { background: rgba(26,86,219,.15); border-color: var(--ead-primary); color:#fff; }
.eiad-mat-icon { font-size: 28px; flex-shrink: 0; }
.eiad-mat-info { flex: 1; }
.eiad-mat-title { font-size: 14px; font-weight: 600; color: #fff; }
.eiad-mat-type  { font-size: 11px; color: var(--ead-muted); text-transform: uppercase; letter-spacing: .5px; margin-top: 2px; }
.eiad-mat-dl    { font-size: 20px; color: var(--ead-muted); }
.eiad-no-materials { color: var(--ead-muted); font-size: 13px; padding: 20px 0; }

/* Auto-advance overlay */
.eiad-advance-overlay {
    position: absolute; inset: 0; z-index: 50;
    background: rgba(10,18,30,.9);
    display: none; flex-direction: column;
    align-items: center; justify-content: center; gap: 16px;
    border-radius: 14px;
}
.eiad-advance-overlay.show { display: flex; }
.eiad-advance-title { font-size: 18px; font-weight: 800; color: #fff; font-family:'Sora',sans-serif; }
.eiad-advance-sub   { font-size: 14px; color: var(--ead-muted); }
.eiad-advance-ring {
    width: 70px; height: 70px; border-radius: 50%;
    border: 4px solid rgba(255,255,255,.15);
    border-top-color: var(--ead-accent);
    animation: spin 1s linear infinite;
}
.eiad-advance-cancel {
    background: rgba(255,255,255,.1); color:#fff; border:none;
    padding: 8px 18px; border-radius:8px; cursor:pointer;
    font-size:13px; font-family:'Sora',sans-serif;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* No access */
.eiad-no-access {
    background: #fee2e2; color: #991b1b;
    padding: 20px; border-radius: 10px; font-weight: 600;
    margin: 20px;
}

/* Set-password page */
.eiad-setpass-wrap {
    min-height: 100vh; background: linear-gradient(135deg,#0f1b2d,#1a3a6b);
    display:flex; align-items:center; justify-content:center; padding:20px;
    font-family: 'Sora',sans-serif;
}
.eiad-setpass-box {
    background:#fff; border-radius:20px; padding:44px 40px;
    width:100%; max-width:420px; box-shadow:0 30px 80px rgba(0,0,0,.35);
}
.eiad-success-box {
    background:#d1fae5; color:#065f46;
    padding:12px 16px; border-radius:8px;
    font-size:14px; font-weight:600; margin-bottom:16px; display:none;
}