/* ESG LMS - Frontend Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --esg-green: #1a5c38;
    --esg-green-light: #2d7a50;
    --esg-green-pale: #e8f5ee;
    --esg-gold: #c9a227;
    --esg-text: #1a1a2e;
    --esg-text-muted: #6b7280;
    --esg-border: #e5e7eb;
    --esg-radius: 10px;
    --esg-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.esg-container { max-width:1200px; margin:0 auto; padding:0 20px; }

/* ===== BUTTONS ===== */
.esg-btn {
    display:inline-flex; align-items:center; justify-content:center;
    padding:10px 22px; border-radius:8px; font-size:14px; font-weight:600;
    text-decoration:none; cursor:pointer; border:2px solid transparent;
    transition:all 0.2s; font-family:inherit; line-height:1;
}
.esg-btn-primary { background:var(--esg-green); color:#fff; border-color:var(--esg-green); }
.esg-btn-primary:hover { background:var(--esg-green-light); color:#fff; }
.esg-btn-success { background:#16a34a; color:#fff; border-color:#16a34a; }
.esg-btn-success:hover { background:#15803d; color:#fff; }
.esg-btn-outline { background:transparent; color:var(--esg-green); border-color:var(--esg-green); }
.esg-btn-outline:hover { background:var(--esg-green-pale); }
.esg-btn-block { width:100%; display:flex; }
.esg-btn-lg { padding:14px 28px; font-size:16px; }
.esg-btn-sm { padding:7px 14px; font-size:13px; }

/* ===== NOTICES ===== */
.esg-notice { padding:14px 18px; border-radius:var(--esg-radius); margin:16px 0; border-left:4px solid; }
.esg-notice-success { background:#f0fdf4; border-color:#16a34a; color:#15803d; }
.esg-notice-error { background:#fef2f2; border-color:#dc2626; color:#b91c1c; }
.esg-notice-warning { background:#fffbeb; border-color:#f59e0b; color:#b45309; }
.esg-notice-info { background:#eff6ff; border-color:#3b82f6; color:#1d4ed8; }

/* ===== FORMS ===== */
.esg-form { max-width:480px; }
.esg-form-group { margin-bottom:18px; }
.esg-form-group label { display:block; font-weight:600; font-size:13px; color:var(--esg-text); margin-bottom:6px; }
.esg-form-group input[type="text"],
.esg-form-group input[type="email"],
.esg-form-group input[type="password"],
.esg-form-group input[type="number"],
.esg-form-group input[type="url"],
.esg-form-group select,
.esg-form-group textarea,
.esg-text-input, .esg-textarea {
    width:100%; padding:10px 14px; border:1.5px solid var(--esg-border);
    border-radius:8px; font-size:14px; font-family:inherit;
    transition:border-color 0.2s; background:#fff;
}
.esg-form-group input:focus, .esg-form-group select:focus, .esg-form-group textarea:focus,
.esg-text-input:focus, .esg-textarea:focus {
    outline:none; border-color:var(--esg-green); box-shadow:0 0 0 3px rgba(26,92,56,0.1);
}
.esg-form-row { display:grid; grid-template-columns:1fr 1fr; gap:14px; }

/* ===== AUTH BOX ===== */
.esg-auth-box { max-width:480px; margin:40px auto; background:#fff; border-radius:16px; box-shadow:var(--esg-shadow); overflow:hidden; }
.esg-auth-tabs { display:flex; border-bottom:2px solid var(--esg-border); }
.esg-auth-tab { flex:1; padding:16px; text-align:center; font-weight:600; font-size:15px; text-decoration:none; color:var(--esg-text-muted); transition:all 0.2s; }
.esg-auth-tab.active { color:var(--esg-green); border-bottom:2px solid var(--esg-green); margin-bottom:-2px; }
.esg-auth-box .esg-form { max-width:none; padding:28px; }
.esg-auth-link { text-align:center; font-size:13px; margin-top:12px; color:var(--esg-text-muted); }
.esg-auth-link a { color:var(--esg-green); font-weight:600; }

/* ===== COURSE ARCHIVE ===== */
.esg-courses-page { padding:40px 0; min-height:60vh; }
.esg-courses-header { text-align:center; margin-bottom:32px; }
.esg-courses-header h1 { font-size:36px; color:var(--esg-text); margin-bottom:8px; }
.esg-courses-header p { color:var(--esg-text-muted); font-size:16px; }
.esg-filter-bar { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:28px; }
.esg-filter-btn { padding:7px 16px; border-radius:20px; border:1.5px solid var(--esg-border); font-size:13px; font-weight:500; text-decoration:none; color:var(--esg-text-muted); transition:all 0.2s; }
.esg-filter-btn.active, .esg-filter-btn:hover { background:var(--esg-green); color:#fff; border-color:var(--esg-green); }
.esg-courses-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; }

/* ===== COURSE CARD ===== */
.esg-course-card { background:#fff; border-radius:var(--esg-radius); box-shadow:var(--esg-shadow); overflow:hidden; transition:transform 0.2s,box-shadow 0.2s; border:1px solid var(--esg-border); }
.esg-course-card:hover { transform:translateY(-3px); box-shadow:0 8px 30px rgba(0,0,0,0.12); }
.esg-card-thumb { height:180px; background:#1a5c38 center/cover no-repeat; position:relative; }
.esg-card-link { display:block; }
.esg-level-badge { position:absolute; top:10px; left:10px; background:rgba(0,0,0,0.6); color:#fff; padding:4px 10px; border-radius:20px; font-size:11px; font-weight:600; text-transform:uppercase; }
.esg-enrolled-badge-card { position:absolute; top:10px; right:10px; background:var(--esg-gold); color:#fff; padding:4px 10px; border-radius:20px; font-size:11px; font-weight:600; }
.esg-card-body { padding:18px; }
.esg-card-cat { font-size:11px; font-weight:700; color:var(--esg-green); text-transform:uppercase; letter-spacing:0.5px; margin-bottom:6px; }
.esg-card-body h3 { font-size:16px; margin:0 0 8px; line-height:1.4; }
.esg-card-body h3 a { color:var(--esg-text); text-decoration:none; }
.esg-card-body h3 a:hover { color:var(--esg-green); }
.esg-card-excerpt { font-size:13px; color:var(--esg-text-muted); margin-bottom:10px; line-height:1.5; }
.esg-card-meta { display:flex; gap:12px; font-size:12px; color:var(--esg-text-muted); margin-bottom:10px; }
.esg-card-footer { display:flex; align-items:center; justify-content:space-between; margin-top:12px; padding-top:12px; border-top:1px solid var(--esg-border); }
.esg-price-free { color:#16a34a; font-weight:700; font-size:16px; }
.esg-price-paid { color:var(--esg-text); font-weight:700; font-size:18px; }

/* ===== PROGRESS BAR ===== */
.esg-progress-bar { height:6px; background:#e5e7eb; border-radius:4px; overflow:hidden; }
.esg-progress-fill { height:100%; background:var(--esg-green); border-radius:4px; transition:width 0.5s ease; }
.esg-progress-label { font-size:12px; color:var(--esg-text-muted); margin-top:4px; }

/* ===== COURSE SINGLE PAGE ===== */
.esg-course-page { padding:40px 0; }
.esg-course-layout { display:grid; grid-template-columns:1fr 340px; gap:40px; align-items:start; }
.esg-course-hero { margin-bottom:30px; }
.esg-course-hero-img img { width:100%; border-radius:var(--esg-radius); max-height:380px; object-fit:cover; }
.esg-course-cats { margin-bottom:12px; }
.esg-cat-badge { background:var(--esg-green-pale); color:var(--esg-green); padding:4px 12px; border-radius:20px; font-size:12px; font-weight:600; text-decoration:none; margin-right:6px; }
.esg-course-title { font-size:32px; line-height:1.3; margin:10px 0; }
.esg-course-excerpt { color:var(--esg-text-muted); font-size:16px; margin-bottom:12px; }
.esg-course-meta-row { display:flex; flex-wrap:wrap; gap:16px; font-size:14px; color:var(--esg-text-muted); }
.esg-course-description { margin-bottom:30px; }
.esg-course-description h2, .esg-curriculum-section h2 { font-size:22px; margin-bottom:16px; padding-bottom:8px; border-bottom:2px solid var(--esg-border); }

/* Curriculum */
.esg-lesson-list { border:1px solid var(--esg-border); border-radius:var(--esg-radius); overflow:hidden; }
.esg-lesson-item { display:flex; align-items:center; gap:12px; padding:14px 18px; border-bottom:1px solid var(--esg-border); transition:background 0.15s; }
.esg-lesson-item:last-child { border-bottom:none; }
.esg-lesson-item:hover { background:#f9fafb; }
.esg-lesson-item.esg-lesson-done { background:#f0fdf4; }
.esg-lesson-icon { width:28px; text-align:center; font-size:16px; flex-shrink:0; }
.esg-lesson-info { flex:1; }
.esg-lesson-info a { text-decoration:none; color:var(--esg-text); font-weight:500; font-size:14px; }
.esg-lesson-info a:hover { color:var(--esg-green); }
.esg-lesson-dur { font-size:12px; color:var(--esg-text-muted); }
.esg-quiz-item { background:#fafaf5; }
.esg-preview-badge { background:#fef3c7; color:#92400e; padding:2px 8px; border-radius:10px; font-size:11px; font-weight:600; margin-left:8px; }

/* Sidebar */
.esg-course-card-box { background:#fff; border-radius:var(--esg-radius); box-shadow:var(--esg-shadow); overflow:hidden; position:sticky; top:30px; border:1px solid var(--esg-border); }
.esg-course-preview-video { background:#000; }
.esg-price-box { padding:24px; text-align:center; }
.esg-course-price { font-size:36px; font-weight:700; color:var(--esg-text); margin-bottom:16px; }
.esg-course-price span { font-size:16px; color:var(--esg-text-muted); font-weight:400; }
.esg-secure-note { font-size:12px; color:var(--esg-text-muted); margin-top:10px; }
.esg-payment-methods { font-size:12px; color:var(--esg-text-muted); }
.esg-enrolled-box { padding:24px; text-align:center; }
.esg-enrolled-badge { background:var(--esg-green-pale); color:var(--esg-green); padding:8px 16px; border-radius:8px; font-weight:600; display:inline-block; margin-bottom:12px; }
.esg-course-includes { padding:0 24px 24px; border-top:1px solid var(--esg-border); margin-top:4px; }
.esg-course-includes h4 { font-size:13px; font-weight:700; margin:16px 0 10px; text-transform:uppercase; letter-spacing:0.5px; }
.esg-course-includes ul { list-style:none; padding:0; margin:0; }
.esg-course-includes li { font-size:13px; padding:5px 0; color:var(--esg-text-muted); }

/* ===== LESSON PAGE ===== */
.esg-lesson-page { min-height:100vh; }
.esg-lesson-topbar { display:flex; align-items:center; gap:16px; padding:12px 20px; background:#fff; border-bottom:1px solid var(--esg-border); position:sticky; top:0; z-index:100; box-shadow:0 1px 4px rgba(0,0,0,0.06); }
.esg-back-link { text-decoration:none; color:var(--esg-text-muted); font-size:13px; font-weight:600; white-space:nowrap; }
.esg-back-link:hover { color:var(--esg-green); }
.esg-lesson-progress-bar { flex:1; height:6px; background:#e5e7eb; border-radius:4px; overflow:hidden; }
.esg-lesson-progress-fill { height:100%; background:var(--esg-green); transition:width 0.5s; }
.esg-progress-pct { font-size:12px; font-weight:600; color:var(--esg-green); white-space:nowrap; }
.esg-lesson-layout { display:grid; grid-template-columns:280px 1fr; min-height:calc(100vh - 56px); }
.esg-lesson-sidebar { background:#f9fafb; border-right:1px solid var(--esg-border); padding:16px 0; overflow-y:auto; position:sticky; top:56px; height:calc(100vh - 56px); }
.esg-lesson-sidebar h3 { padding:0 16px 12px; font-size:13px; font-weight:700; text-transform:uppercase; letter-spacing:0.5px; color:var(--esg-text-muted); border-bottom:1px solid var(--esg-border); }
.esg-nav-lesson { display:flex; align-items:flex-start; gap:10px; padding:10px 16px; text-decoration:none; color:var(--esg-text); font-size:13px; transition:background 0.15s; border-left:3px solid transparent; }
.esg-nav-lesson:hover { background:#e8f5ee; }
.esg-nav-lesson.active { background:#e8f5ee; border-left-color:var(--esg-green); color:var(--esg-green); font-weight:600; }
.esg-nav-lesson.done { color:var(--esg-text-muted); }
.esg-nav-icon { flex-shrink:0; width:18px; text-align:center; }
.esg-nav-quiz { color:var(--esg-text-muted); cursor:default; }
.esg-lesson-main { padding:0; overflow-y:auto; }
.esg-video-wrapper { background:#000; }
.esg-lesson-content-box { padding:32px 40px; max-width:860px; }
.esg-lesson-content-box h1 { font-size:28px; margin-bottom:20px; }
.esg-lesson-content { font-size:15px; line-height:1.8; color:#374151; margin-bottom:24px; }
.esg-lesson-actions { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px; padding:20px 0; border-top:1px solid var(--esg-border); }
.esg-lesson-nav-btns { display:flex; gap:10px; }
.esg-completed-badge { background:#f0fdf4; color:#16a34a; padding:10px 18px; border-radius:8px; font-weight:600; font-size:14px; }
.esg-lesson-quizzes { margin-top:32px; padding-top:32px; border-top:2px solid var(--esg-border); }
.esg-lesson-quizzes h2 { font-size:20px; margin-bottom:16px; }

/* ===== VIDEO EMBED ===== */
.esg-video-embed { position:relative; padding-bottom:56.25%; height:0; overflow:hidden; background:#000; }
.esg-video-embed iframe, .esg-video-embed video { position:absolute; top:0; left:0; width:100%; height:100%; }

/* ===== QUIZ ===== */
.esg-quiz-box { background:#fff; border:1px solid var(--esg-border); border-radius:var(--esg-radius); overflow:hidden; margin-bottom:24px; }
.esg-quiz-header { background:var(--esg-green); color:#fff; padding:18px 24px; }
.esg-quiz-header h3 { margin:0 0 8px; font-size:18px; }
.esg-quiz-meta { display:flex; gap:16px; font-size:13px; opacity:0.9; flex-wrap:wrap; }
.esg-timer-display { background:rgba(255,255,255,0.2); padding:4px 12px; border-radius:20px; font-weight:700; }
.esg-timer-display.esg-timer-warning { background:#ef4444; animation:pulse 1s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.7} }
.esg-quiz-form { padding:24px; }
.esg-question { margin-bottom:28px; padding-bottom:28px; border-bottom:1px solid var(--esg-border); }
.esg-question:last-of-type { border-bottom:none; margin-bottom:0; }
.esg-question-text { font-weight:600; font-size:15px; margin-bottom:14px; line-height:1.5; }
.esg-q-num { color:var(--esg-green); margin-right:6px; }
.esg-q-marks { font-size:12px; color:var(--esg-text-muted); font-weight:400; margin-left:8px; }
.esg-options { display:flex; flex-direction:column; gap:8px; }
.esg-option { display:flex; align-items:flex-start; gap:10px; padding:12px 16px; border:1.5px solid var(--esg-border); border-radius:8px; cursor:pointer; transition:all 0.15s; }
.esg-option:hover { border-color:var(--esg-green); background:var(--esg-green-pale); }
.esg-option input { margin-top:2px; flex-shrink:0; accent-color:var(--esg-green); }
.esg-option.esg-correct { border-color:#16a34a; background:#f0fdf4; }
.esg-option.esg-wrong { border-color:#dc2626; background:#fef2f2; }
.esg-text-input { padding:10px 14px; margin-top:4px; }
.esg-textarea { min-height:100px; resize:vertical; padding:10px 14px; margin-top:4px; }
.esg-quiz-actions { padding:20px 24px; border-top:1px solid var(--esg-border); background:#f9fafb; }
.esg-quiz-result { padding:24px; }
.esg-result-score { text-align:center; padding:20px; }
.esg-result-pct { font-size:56px; font-weight:700; }
.esg-result-pct.esg-pass { color:#16a34a; }
.esg-result-pct.esg-fail { color:#dc2626; }
.esg-result-verdict { font-size:20px; font-weight:600; margin:8px 0; }
.esg-result-detail { color:var(--esg-text-muted); font-size:14px; }
.esg-q-feedback { margin-top:8px; padding:8px 12px; border-radius:6px; font-size:13px; }
.esg-q-feedback.correct { background:#f0fdf4; color:#15803d; }
.esg-q-feedback.incorrect { background:#fef2f2; color:#b91c1c; }

/* ===== DASHBOARD ===== */
.esg-dashboard { max-width:1100px; margin:0 auto; padding:30px 20px; }
.esg-dash-header { display:flex; align-items:center; gap:16px; background:#fff; padding:24px; border-radius:var(--esg-radius); box-shadow:var(--esg-shadow); margin-bottom:24px; }
.esg-dash-welcome h2 { margin:0 0 4px; font-size:22px; }
.esg-dash-welcome p { margin:0; color:var(--esg-text-muted); font-size:14px; }
.esg-dash-actions { margin-left:auto; }
.esg-tabs { display:flex; gap:4px; background:#f3f4f6; padding:4px; border-radius:10px; margin-bottom:24px; width:fit-content; }
.esg-tab { padding:9px 20px; border-radius:8px; border:none; cursor:pointer; font-size:14px; font-weight:500; background:transparent; color:var(--esg-text-muted); transition:all 0.2s; font-family:inherit; }
.esg-tab.active { background:#fff; color:var(--esg-green); font-weight:700; box-shadow:0 1px 4px rgba(0,0,0,0.1); }
.esg-tab-content { display:none; }
.esg-tab-content.active { display:block; }
.esg-course-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:20px; }
.esg-card-status { font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:0.5px; padding:4px 10px; border-radius:20px; display:inline-block; margin-bottom:8px; }
.esg-status-done { background:#f0fdf4; color:#16a34a; }
.esg-status-active { background:#eff6ff; color:#1d4ed8; }
.esg-card-actions { display:flex; gap:8px; margin-top:12px; flex-wrap:wrap; }
.esg-empty-state { text-align:center; padding:60px 20px; color:var(--esg-text-muted); }
.esg-empty-icon { font-size:48px; margin-bottom:12px; }
.esg-empty-state h3 { font-size:20px; color:var(--esg-text); margin-bottom:8px; }

/* Certificates list */
.esg-cert-list { display:flex; flex-direction:column; gap:12px; }
.esg-cert-item { display:flex; align-items:center; gap:16px; padding:18px; background:#fff; border-radius:var(--esg-radius); border:1px solid var(--esg-border); box-shadow:var(--esg-shadow); }
.esg-cert-icon { font-size:32px; }
.esg-cert-info { flex:1; }
.esg-cert-info h4 { margin:0 0 4px; font-size:16px; }
.esg-cert-info p { margin:2px 0; font-size:13px; color:var(--esg-text-muted); }
.esg-cert-id-text { font-family:monospace; color:var(--esg-green); }

/* ===== CHECKOUT ===== */
.esg-checkout-box { max-width:560px; margin:40px auto; background:#fff; border-radius:16px; box-shadow:var(--esg-shadow); padding:32px; }
.esg-checkout-box h2 { margin-bottom:24px; font-size:24px; }
.esg-checkout-course { display:flex; gap:16px; align-items:center; padding:16px; background:#f9fafb; border-radius:var(--esg-radius); margin-bottom:24px; }
.esg-checkout-course img { width:100px; border-radius:6px; object-fit:cover; }
.esg-checkout-price { font-size:24px; font-weight:700; color:var(--esg-green); margin-top:6px; }
.esg-checkout-actions { margin-bottom:14px; }

/* ===== PAYMENT RESULT ===== */
.esg-payment-result { text-align:center; padding:48px 32px; max-width:440px; margin:60px auto; border-radius:16px; border:none; box-shadow:var(--esg-shadow); }
.esg-result-icon { font-size:56px; margin-bottom:12px; }
.esg-payment-result h2 { font-size:26px; margin-bottom:10px; }
.esg-payment-result p { margin-bottom:20px; font-size:16px; }

/* ===== VERIFY CERTIFICATE ===== */
.esg-verify-box { max-width:600px; margin:40px auto; }
.esg-verify-result { text-align:center; }
.esg-verify-tick { font-size:48px; margin-bottom:10px; }
.esg-verify-table { width:100%; border-collapse:collapse; margin:16px 0 20px; text-align:left; }
.esg-verify-table th, .esg-verify-table td { padding:10px 14px; border-bottom:1px solid var(--esg-border); font-size:14px; }
.esg-verify-table th { color:var(--esg-text-muted); font-weight:600; width:140px; }

/* ===== RESPONSIVE ===== */
@media (max-width:768px) {
    .esg-course-layout { grid-template-columns:1fr; }
    .esg-course-sidebar { order:-1; }
    .esg-course-card-box { position:static; }
    .esg-lesson-layout { grid-template-columns:1fr; }
    .esg-lesson-sidebar { position:static; height:auto; max-height:240px; }
    .esg-lesson-content-box { padding:20px 16px; }
    .esg-form-row { grid-template-columns:1fr; }
    .esg-courses-grid { grid-template-columns:1fr; }
    .esg-dash-header { flex-wrap:wrap; }
    .esg-cert-item { flex-wrap:wrap; }
}