/* =========================================================
   ACE Academy CBT — Brand Stylesheet
   Purple #5B2D8E + Gold #F5C518 theme
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=Oswald:wght@600;700&display=swap');

:root {
    --primary:       #5B2D8E;
    --primary-dark:  #3A1A60;
    --primary-light: #F3EBF9;
    --gold:          #F5C518;
    --gold-dark:     #D4A800;
    --gold-light:    #FEF9E7;
    --success:       #10B981;
    --warning:       #F59E0B;
    --danger:        #EF4444;
    --gray-50:       #FAF8FC;
    --gray-100:      #F3EFF8;
    --gray-200:      #E4DCEF;
    --gray-300:      #C9BBDC;
    --gray-400:      #9B87B8;
    --gray-500:      #6E5A8E;
    --gray-600:      #4A3B66;
    --gray-700:      #2E2248;
    --gray-800:      #1C1530;
    --gray-900:      #0F0A1E;
    --white:         #FFFFFF;
    --radius-sm:     6px;
    --radius:        10px;
    --radius-lg:     16px;
    --radius-xl:     24px;
    --shadow-sm:     0 1px 3px rgba(91,45,142,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow:        0 4px 16px rgba(91,45,142,.12);
    --shadow-lg:     0 8px 32px rgba(91,45,142,.18);
    --font:          'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition:    0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
    font-size: 16px;
    scroll-behavior: smooth;
}
body {
    font-family: var(--font);
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
/* Only lock height on exam page — login/result pages must scroll freely */
body.exam-page {
    height: 100vh;
    height: 100dvh;
    height: -webkit-fill-available;
    overflow: hidden;
}
a { color: var(--primary); text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, select, textarea { font-family: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
/* ---- CBT Logo Image ---- */
.cbt-logo-img {
    height: 44px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
}

/* Login page: constrained, centered */
.login-logo .cbt-logo-img {
    height: 80px;
    width: auto;
    max-width: 160px;
    margin: 0 auto;
}

/* Exam header: very compact */
.exam-logo .cbt-logo-img {
    height: 34px;
    width: auto;
    max-width: 80px;
}

/* Result page header */
.result-logo .cbt-logo-img {
    height: 40px;
    width: auto;
    max-width: 90px;
}

/* Admin login */
.admin-logo .cbt-logo-img {
    height: 80px;
    width: auto;
    max-width: 160px;
    margin: 0 auto;
}

/* Lock overlay */
#lockIcon .cbt-logo-img {
    height: 80px;
    width: auto;
    max-width: 160px;
    margin: 0 auto;
}

@media (max-width: 640px) {
    .cbt-logo-img                { height: 36px; max-width: 80px; }
    .login-logo .cbt-logo-img    { height: 64px; max-width: 130px; }
    .exam-logo .cbt-logo-img     { height: 28px; max-width: 65px; }
    .admin-logo .cbt-logo-img    { height: 64px; max-width: 130px; }
    #lockIcon .cbt-logo-img      { height: 64px; max-width: 130px; }
}


/* LOGIN PAGE */
.login-page {
    min-height: 100vh;
    display: flex; align-items: flex-start; justify-content: center;
    background: linear-gradient(135deg, #3A1A60 0%, #5B2D8E 55%, #7B3FB8 100%);
    padding: 24px 16px;
    position: relative; overflow-x: hidden;
}
.bg-shapes { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.shape { position: absolute; border-radius: 50%; }
.shape-1 { width: 420px; height: 420px; top: -120px; right: -120px; opacity: 0.07; background: white; }
.shape-2 { width: 320px; height: 320px; bottom: -100px; left: -100px; opacity: 0.07; background: white; }
.shape-3 { width: 180px; height: 180px; top: 38%; left: 8%; opacity: 0.12; background: var(--gold); animation: float 8s ease-in-out infinite; }
.shape-4 { width: 80px; height: 80px; top: 20%; right: 12%; opacity: 0.15; background: var(--gold); animation: float 6s ease-in-out infinite 2s; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-22px); } }

.login-container {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 40px 36px;
    width: 100%; max-width: 560px;
    box-shadow: var(--shadow-lg);
    position: relative; z-index: 1;
    animation: fadeUp 0.4s ease both;
    border-top: 4px solid var(--gold);
    margin: 24px auto;
}
@keyframes fadeUp { from { opacity:0; transform: translateY(20px); } to { opacity:1; transform:none; } }

.login-header { text-align: center; margin-bottom: 32px; }
.login-logo { display: inline-flex; margin-bottom: 16px; }
.login-title { font-family: 'Oswald', sans-serif; font-size: 1.7rem; font-weight: 700; color: var(--primary); margin-bottom: 4px; letter-spacing: 1px; }
.login-subtitle { color: var(--gray-500); font-size: 0.95rem; }
.login-header::after { content: ''; display: block; width: 50px; height: 3px; background: var(--gold); border-radius: 99px; margin: 12px auto 0; }

.alert { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: var(--radius); font-size: 0.9rem; margin-bottom: 20px; animation: fadeUp 0.3s ease; }
.alert-error   { background: #FEF2F2; color: #DC2626; border: 1px solid #FECACA; }
.alert-success { background: #F0FDF4; color: #059669; border: 1px solid #A7F3D0; }

.form-group { margin-bottom: 22px; }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--gray-700); margin-bottom: 8px; }
.required { color: var(--danger); margin-left: 2px; }
.form-input { width: 100%; padding: 11px 14px; border: 1.5px solid var(--gray-200); border-radius: var(--radius); font-size: 0.95rem; color: var(--gray-800); background: var(--gray-50); transition: border-color var(--transition), box-shadow var(--transition), background var(--transition); outline: none; }
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(91,45,142,.15); background: var(--white); }
.form-hint { font-size: 0.8rem; color: var(--gray-400); margin-top: 5px; display: block; }

.subject-notice { display: flex; align-items: flex-start; gap: 8px; background: var(--primary-light); color: var(--primary-dark); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 0.88rem; margin-bottom: 16px; border: 1px solid var(--gray-200); line-height: 1.5; }
.subject-notice span { flex: 1; }

.subjects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; margin-bottom: 14px; }
.subject-card { border: 2px solid var(--gray-200); border-radius: var(--radius); padding: 12px 10px; cursor: pointer; position: relative; background: var(--white); transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition); user-select: none; }
.subject-card:hover:not(.disabled):not(.compulsory) { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(91,45,142,.1); transform: translateY(-2px); }
.subject-card.selected { border-color: var(--primary); background: var(--primary-light); }
.subject-card.compulsory { border-color: var(--gold-dark); background: var(--gold-light); cursor: default; }
.subject-card.disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }
.subject-card input[type="checkbox"] { display: none; }
.subject-card-inner { text-align: center; }
.subject-code { font-size: 0.75rem; font-weight: 700; color: var(--gray-400); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 4px; }
.subject-card.selected .subject-code { color: var(--primary); }
.subject-card.compulsory .subject-code { color: var(--gold-dark); }
.subject-name { font-size: 0.82rem; font-weight: 600; color: var(--gray-700); line-height: 1.3; }
.subject-card.selected .subject-name { color: var(--primary-dark); }
.subject-tag { display: inline-block; font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; background: var(--gold); color: var(--gray-900); padding: 2px 7px; border-radius: 99px; margin-top: 6px; }
.subject-check-icon { display: none; position: absolute; top: 6px; right: 6px; width: 20px; height: 20px; border-radius: 50%; background: var(--primary); color: white; align-items: center; justify-content: center; }
.subject-card.selected .subject-check-icon { display: flex; }
.subject-card.compulsory .subject-check-icon { display: flex; background: var(--gold-dark); }

.subject-counter { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--gray-500); margin-top: 4px; }
.counter-bar { flex: 1; height: 4px; background: var(--gray-200); border-radius: 99px; overflow: hidden; }
.counter-fill { height: 100%; background: var(--primary); border-radius: 99px; transition: width 0.3s ease; }

.exam-rules { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 24px; border-left: 3px solid var(--gold); }
.rules-title { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; font-weight: 700; color: var(--gray-700); margin-bottom: 10px; text-transform: uppercase; letter-spacing: .04em; }
.rules-list { display: flex; flex-direction: column; gap: 6px; }
.rules-list li { font-size: 0.875rem; color: var(--gray-600); padding-left: 16px; position: relative; }
.rules-list li::before { content: '◆'; position: absolute; left: 0; color: var(--gold); font-size: 0.55rem; top: 5px; }

.btn-start { width: 100%; padding: 14px 24px; background: var(--primary); color: white; border-radius: var(--radius); font-size: 1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; gap: 10px; transition: background var(--transition), transform var(--transition), box-shadow var(--transition); box-shadow: 0 4px 14px rgba(91,45,142,.4); font-family: 'Oswald', sans-serif; letter-spacing: 1px; position: relative; overflow: hidden; }
.btn-start:hover:not(:disabled) { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(91,45,142,.5); }
.btn-start:active:not(:disabled) { transform: translateY(0); }
.btn-start:disabled { background: var(--gray-300); color: var(--gray-500); box-shadow: none; cursor: not-allowed; }

.login-footer { text-align: center; margin-top: 20px; }
.admin-link { font-size: 0.82rem; color: var(--gray-400); }
.admin-link:hover { color: var(--primary); }

/* EXAM PAGE */
.exam-page {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--gray-100);
}

.exam-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 20px; height: 60px; background: var(--primary-dark); border-bottom: 3px solid var(--gold); flex-shrink: 0; z-index: 10; }
.exam-header-left { display: flex; align-items: center; gap: 12px; min-width: 0; }
.exam-logo { flex-shrink: 0; }
.exam-student-info { min-width: 0; display: flex; align-items: center; gap: 6px; }
.student-label { font-size: 0.72rem; color: rgba(245,197,24,.7); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; flex-shrink: 0; }
.student-name { font-size: 0.95rem; font-weight: 700; color: white; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }

.exam-timer { display: flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: var(--radius); background: rgba(255,255,255,.08); border: 1.5px solid rgba(245,197,24,.35); flex-shrink: 0; transition: all 0.3s ease; }
.timer-icon { color: var(--gold); display: flex; }
.timer-display { font-family: 'Oswald', sans-serif; font-size: 1.35rem; font-weight: 700; letter-spacing: .05em; color: var(--gold); font-variant-numeric: tabular-nums; }
.timer-label { font-size: 0.68rem; color: rgba(255,255,255,.4); text-transform: uppercase; letter-spacing: .06em; }
.exam-timer.timer-warn { background: rgba(245,158,11,.15); border-color: var(--warning); }
.exam-timer.timer-warn .timer-display { color: var(--warning); }
.exam-timer.timer-danger { background: rgba(239,68,68,.15); border-color: var(--danger); animation: pulse-danger 1s ease infinite; }
.exam-timer.timer-danger .timer-display { color: var(--danger); }
@keyframes pulse-danger { 0%,100% { box-shadow: none; } 50% { box-shadow: 0 0 0 4px rgba(239,68,68,.25); } }

.exam-progress-info { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; color: rgba(255,255,255,.6); flex-shrink: 0; }
.progress-label { font-size: 0.72rem; color: rgba(255,255,255,.4); }
.progress-bar-mini { width: 80px; height: 5px; background: rgba(255,255,255,.15); border-radius: 99px; overflow: hidden; }
.progress-fill-mini { height: 100%; background: var(--gold); border-radius: 99px; transition: width 0.4s ease; }

.btn-submit-exam { display: flex; align-items: center; gap: 8px; padding: 9px 18px; background: var(--gold); color: var(--gray-900); border-radius: var(--radius); font-size: 0.88rem; font-weight: 700; transition: background var(--transition), transform var(--transition), box-shadow var(--transition); flex-shrink: 0; box-shadow: 0 2px 8px rgba(245,197,24,.35); }
.btn-submit-exam:hover { background: var(--gold-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(245,197,24,.5); }

.subject-tabs { display: flex; align-items: center; gap: 4px; padding: 0 16px; height: 50px; background: var(--white); border-bottom: 1px solid var(--gray-200); overflow-x: auto; flex-shrink: 0; scrollbar-width: none; }
.subject-tabs::-webkit-scrollbar { display: none; }
.subject-tab { display: flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: var(--radius-sm); font-size: 0.85rem; font-weight: 600; color: var(--gray-500); white-space: nowrap; transition: all var(--transition); position: relative; background: transparent; border: 1.5px solid transparent; }
.subject-tab:hover { background: var(--gray-100); color: var(--primary); }
.subject-tab.active { background: var(--primary-light); color: var(--primary); border-color: var(--gray-200); border-bottom: 2px solid var(--primary); }
.tab-code { font-size: 0.72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.tab-name { display: none; }
@media (min-width: 768px) { .tab-name { display: block; } }
.tab-progress { font-size: 0.72rem; font-weight: 700; background: var(--gray-100); color: var(--gray-500); padding: 2px 7px; border-radius: 99px; }
.subject-tab.active .tab-progress { background: var(--primary-light); color: var(--primary); border: 1px solid var(--gray-200); }

.exam-main { display: flex; flex: 1; overflow: hidden; min-height: 0; max-height: 100%; }

.question-palette { width: 180px; min-width: 160px; background: var(--white); border-right: 1px solid var(--gray-200); display: flex; flex-direction: column; overflow: hidden; flex-shrink: 0; }
@media (max-width: 640px) { .question-palette { display: none; } }
.palette-header { padding: 16px 14px 10px; flex-shrink: 0; }
.palette-header h3 { font-size: 0.75rem; font-weight: 700; color: var(--gray-400); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.palette-legend { display: flex; flex-direction: column; gap: 5px; }
.legend-item { font-size: 0.72rem; color: var(--gray-500); display: flex; align-items: center; gap: 6px; }
.legend-item::before { content: ''; width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }
.legend-answered::before { background: var(--success); }
.legend-current::before  { background: var(--primary); }
.legend-unanswered::before { background: var(--gray-200); border: 1px solid var(--gray-300); }
.palette-grid { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 8px 14px 16px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; align-content: start; }
.palette-btn { aspect-ratio: 1; border-radius: 5px; font-size: 0.78rem; font-weight: 700; color: var(--gray-500); background: var(--gray-100); border: 1.5px solid var(--gray-200); transition: all 0.15s ease; display: flex; align-items: center; justify-content: center; }
.palette-btn:hover  { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.palette-btn.answered { background: #D1FAE5; border-color: #6EE7B7; color: #065F46; }
.palette-btn.current  { background: var(--primary); border-color: var(--primary-dark); color: white; }
.palette-btn.answered.current { background: var(--primary); border-color: var(--primary-dark); color: white; }

.question-area { flex: 1; display: flex; flex-direction: column; overflow: hidden; padding: 20px; gap: 16px; min-height: 0; }
.question-card { background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 28px 32px; flex: 1; height: 0; min-height: 0; overflow-y: scroll; -webkit-overflow-scrolling: touch; touch-action: pan-y; border: 1px solid var(--gray-200); border-top: 3px solid var(--primary); }
@media (max-width: 600px) { .question-card { padding: 20px 16px; } }
.question-card.slide-in { animation: slideIn 0.22s cubic-bezier(0.4,0,0.2,1); }
@keyframes slideIn { from { opacity: 0.3; transform: translateX(12px); } to { opacity: 1; transform: none; } }

.question-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.question-subject-badge { display: inline-flex; align-items: center; background: var(--primary); color: white; font-size: 0.78rem; font-weight: 700; padding: 4px 14px; border-radius: 99px; text-transform: uppercase; letter-spacing: .06em; font-family: 'Oswald', sans-serif; }
.question-number-label { font-size: 0.85rem; color: var(--gray-400); font-weight: 600; }
.question-text { font-size: 1.05rem; line-height: 1.8; color: var(--gray-800); font-weight: 500; margin-bottom: 28px; }

.options-list { display: flex; flex-direction: column; gap: 10px; }
.option-item { display: flex; align-items: flex-start; gap: 14px; padding: 14px 16px; border-radius: var(--radius); border: 2px solid var(--gray-200); cursor: pointer; transition: all var(--transition); background: var(--white); position: relative; }
.option-item:hover { border-color: var(--primary); background: var(--primary-light); }
.option-item.selected { border-color: var(--primary); background: var(--primary-light); box-shadow: 0 0 0 3px rgba(91,45,142,.1); }
.option-letter { width: 32px; height: 32px; flex-shrink: 0; border-radius: 50%; border: 2px solid var(--gray-300); display: flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: 700; color: var(--gray-500); transition: all var(--transition); font-family: 'Oswald', sans-serif; }
.option-item:hover .option-letter { border-color: var(--primary); color: var(--primary); }
.option-item.selected .option-letter { background: var(--primary); border-color: var(--primary); color: white; }
.option-text { flex: 1; font-size: 0.95rem; color: var(--gray-700); line-height: 1.5; padding-top: 4px; }
.option-item.selected .option-text { color: var(--primary-dark); font-weight: 500; }
.option-check { width: 22px; height: 22px; flex-shrink: 0; border-radius: 50%; background: var(--primary); color: white; display: none; align-items: center; justify-content: center; margin-top: 3px; }
.option-item.selected .option-check { display: flex; }

.question-nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-shrink: 0; padding: 8px 0 4px; }
.btn-nav { display: flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: var(--radius); font-size: 0.9rem; font-weight: 600; background: var(--white); color: var(--gray-700); border: 1.5px solid var(--gray-200); transition: all var(--transition); }
.btn-nav:hover:not(:disabled) { background: var(--gray-100); border-color: var(--primary); color: var(--primary); }
.btn-nav:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-next { background: var(--primary); color: white; border-color: var(--primary); }
.btn-next:hover:not(:disabled) { background: var(--primary-dark); border-color: var(--primary-dark); color: white; }
.nav-dots { display: flex; gap: 5px; align-items: center; }

.save-status { position: fixed; bottom: 20px; left: 20px; display: flex; align-items: center; gap: 7px; padding: 7px 14px; border-radius: 99px; font-size: 0.78rem; font-weight: 600; background: white; box-shadow: var(--shadow); border: 1px solid var(--gray-200); transition: opacity 0.4s ease; z-index: 100; }
.save-status svg { flex-shrink: 0; }
.save-saved   { color: var(--success); border-color: #A7F3D0; }
.save-saved svg { fill: var(--success); }
.save-saving  { color: var(--warning); border-color: #FCD34D; }
.save-saving svg { fill: var(--warning); animation: pulse 1s ease infinite; }
.save-error   { color: var(--danger); border-color: #FECACA; }
.save-error svg { fill: var(--danger); }
.save-fade    { opacity: 0; pointer-events: none; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.modal-overlay { position: fixed; inset: 0; z-index: 1000; background: rgba(10,5,20,.7); display: flex; align-items: center; justify-content: center; padding: 20px; backdrop-filter: blur(6px); animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity: 0; } }
.modal { background: white; border-radius: var(--radius-xl); padding: 40px 36px; max-width: 420px; width: 100%; box-shadow: var(--shadow-lg); text-align: center; animation: scaleIn 0.22s cubic-bezier(0.4,0,0.2,1); border-top: 4px solid var(--primary); }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } }
.modal-icon { display: flex; justify-content: center; margin-bottom: 16px; }
.modal-icon svg { width: 52px; height: 52px; }
.modal-title { font-family: 'Oswald', sans-serif; font-size: 1.4rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; letter-spacing: .5px; }
.modal-body { font-size: 0.95rem; color: var(--gray-600); line-height: 1.6; }
.modal-loader { display: flex; justify-content: center; padding: 16px 0; }
.modal-actions { display: flex; gap: 12px; margin-top: 28px; }
.btn-modal-cancel { flex: 1; padding: 12px; border: 2px solid var(--gray-200); border-radius: var(--radius); font-weight: 600; color: var(--gray-600); background: white; transition: all var(--transition); }
.btn-modal-cancel:hover { border-color: var(--gray-300); background: var(--gray-50); }
.btn-modal-confirm { flex: 1; padding: 12px; background: var(--gold); color: var(--gray-900); border-radius: var(--radius); font-weight: 700; transition: background var(--transition); }
.btn-modal-confirm:hover { background: var(--gold-dark); }

/* RESULT PAGE */
.result-page { min-height: 100vh; background: var(--gray-100); padding: 32px 16px; }
.result-container { max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.result-header { display: flex; align-items: center; gap: 16px; background: var(--primary-dark); border-radius: var(--radius-lg); padding: 20px 24px; box-shadow: var(--shadow); border-bottom: 3px solid var(--gold); }
.result-logo { flex-shrink: 0; }
.result-app-name { font-family: 'Oswald', sans-serif; font-size: 1.25rem; font-weight: 700; color: var(--gold); letter-spacing: 1px; }
.result-subtitle { font-size: 0.85rem; color: rgba(255,255,255,.5); }

.result-student-card { display: flex; align-items: center; gap: 20px; background: linear-gradient(135deg, var(--primary-dark), var(--primary), #7B3FB8); border-radius: var(--radius-lg); padding: 24px 28px; color: white; box-shadow: 0 4px 20px rgba(91,45,142,.4); border-left: 4px solid var(--gold); }
.student-avatar { width: 56px; height: 56px; border-radius: 50%; background: rgba(245,197,24,.2); border: 2px solid var(--gold); display: flex; align-items: center; justify-content: center; font-family: 'Oswald', sans-serif; font-size: 1.4rem; font-weight: 700; flex-shrink: 0; color: var(--gold); }
.student-fullname { font-family: 'Oswald', sans-serif; font-size: 1.3rem; font-weight: 700; margin-bottom: 6px; letter-spacing: .5px; }
.student-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: 0.82rem; opacity: 0.85; }
.student-meta span { display: flex; align-items: center; gap: 5px; }

.overall-score-card { background: white; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; }
.score-circle-container { position: relative; width: 160px; height: 160px; flex-shrink: 0; }
.score-ring { transform: rotate(-90deg); }
.score-circle-text { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.score-percent { font-family: 'Oswald', sans-serif; font-size: 2.2rem; font-weight: 700; color: var(--gray-900); line-height: 1; }
.score-grade { font-size: 1.1rem; font-weight: 700; margin-top: 4px; }
.overall-details { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; justify-content: center; }
.overall-stat { text-align: center; }
.stat-value { display: block; font-family: 'Oswald', sans-serif; font-size: 2.4rem; font-weight: 700; color: var(--gray-900); line-height: 1; }
.stat-label { display: block; font-size: 0.75rem; color: var(--gray-400); text-transform: uppercase; letter-spacing: .08em; margin-top: 4px; }
.overall-stat-divider { font-size: 2rem; color: var(--gray-300); }
.overall-grade-badge { display: inline-block; padding: 7px 20px; border-radius: 99px; border: 2px solid; font-weight: 700; font-size: 0.9rem; }

.subjects-breakdown { background: white; border-radius: var(--radius-lg); padding: 24px 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-200); }
.breakdown-title { font-family: 'Oswald', sans-serif; font-size: 1rem; font-weight: 700; color: var(--primary); margin-bottom: 20px; text-transform: uppercase; letter-spacing: .08em; }
.subject-results-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.subject-result-card { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 16px 18px; transition: box-shadow var(--transition); border-left: 3px solid var(--primary); }
.subject-result-card:hover { box-shadow: var(--shadow-sm); }
.subject-result-header { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.subject-result-code { font-family: 'Oswald', sans-serif; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; background: var(--primary-light); color: var(--primary); padding: 3px 8px; border-radius: 4px; }
.subject-result-name { font-size: 0.9rem; font-weight: 600; color: var(--gray-700); flex: 1; }
.subject-result-tag { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; background: var(--gold); color: var(--gray-900); padding: 2px 7px; border-radius: 99px; }
.subject-score-display { margin-bottom: 8px; }
.subject-score { font-family: 'Oswald', sans-serif; font-size: 2rem; font-weight: 700; line-height: 1; }
.subject-score-total { font-size: 1rem; color: var(--gray-400); }
.subject-score-bar { height: 6px; background: var(--gray-100); border-radius: 99px; overflow: hidden; margin-bottom: 6px; }
.subject-score-fill { height: 100%; border-radius: 99px; }
.subject-pct { font-size: 0.82rem; color: var(--gray-500); }

.result-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-print, .btn-new-exam { flex: 1; min-width: 140px; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 20px; border-radius: var(--radius); font-size: 0.9rem; font-weight: 600; transition: all var(--transition); }
.btn-print { background: white; color: var(--gray-700); border: 2px solid var(--gray-200); }
.btn-print:hover { background: var(--gray-100); border-color: var(--primary); color: var(--primary); }
.btn-new-exam { background: var(--primary); color: white; border: 2px solid var(--primary); box-shadow: 0 4px 12px rgba(91,45,142,.3); font-family: 'Oswald', sans-serif; letter-spacing: .5px; }
.btn-new-exam:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-1px); }

@media print {
    .result-page { background: white; padding: 0; }
    .result-actions, .result-header .result-logo { display: none; }
    .result-student-card { background: var(--gray-100) !important; color: var(--gray-900) !important; }
    .student-avatar { background: var(--gray-200) !important; color: var(--gray-800) !important; }
    .overall-score-card, .subjects-breakdown, .result-student-card { box-shadow: none !important; border: 1px solid #ccc !important; }
}

/* ==========================================================
   MOBILE EXAM — Full fix for small screens
   ========================================================== */

@media (max-width: 640px) {

    /* Unlock page scroll on mobile — let content flow naturally */
    body.exam-page {
        height: auto !important;
        min-height: 100vh;
        overflow: visible !important;
    }
    .exam-page {
        height: auto !important;
        min-height: 100dvh;
    }
    .exam-main {
        overflow: visible !important;
        height: auto !important;
        max-height: none !important;
        min-height: 0;
    }

    /* ---- Exam header: compact, nothing overflows ---- */
    .exam-header {
        padding: 0 10px;
        height: 52px;
        gap: 8px;
    }

    /* Header stays fixed at top on mobile */
    .exam-header {
        position: sticky;
        top: 0;
        z-index: 100;
    }
    .subject-tabs {
        position: sticky;
        top: 52px;
        z-index: 99;
    }

    /* Hide student label, progress bar — save space */
    .student-label,
    .exam-progress-info { display: none; }

    /* Logo: smaller on mobile */
    .exam-logo svg { width: 22px !important; height: 26px !important; }

    /* Student name: shorter max-width */
    .student-name { font-size: 0.85rem; max-width: 110px; }

    /* Timer: tighter padding, keep gold numbers readable */
    .exam-timer {
        padding: 5px 10px;
        gap: 5px;
        border-radius: 8px;
    }
    .timer-display { font-size: 1.15rem; }
    .timer-label { display: none; }
    .timer-icon svg { width: 14px; height: 14px; }

    /* Submit button: icon only on mobile, no text */
    .btn-submit-exam {
        padding: 8px 14px;
        font-size: 0.8rem;
        gap: 5px;
    }
    .btn-submit-exam span { display: none; }

    /* Subject tabs: smaller */
    .subject-tab { padding: 6px 10px; font-size: 0.78rem; }
    .tab-progress { font-size: 0.68rem; padding: 1px 5px; }

    /* Main layout */
    .question-palette { display: none; }

    /* Question area: reduce padding, scrolls when content is tall */
    .question-area {
        padding: 10px;
        gap: 8px;
        overflow: visible;
        height: auto;
    }

    /* On mobile the card expands to full content height — no scroll trap */
    .question-card {
        padding: 16px 14px;
        flex-shrink: 0;
        height: auto;
        min-height: 0;
        overflow: visible;
    }

    .question-meta { margin-bottom: 12px; }
    .question-subject-badge { font-size: 0.72rem; padding: 3px 10px; }
    .question-number-label { font-size: 0.78rem; }
    .question-text { font-size: 0.92rem; line-height: 1.65; margin-bottom: 16px; }

    /* Options: tighter on mobile */
    .options-list { gap: 8px; }
    .option-item { padding: 11px 12px; gap: 10px; }
    .option-letter { width: 28px; height: 28px; font-size: 0.8rem; }
    .option-text { font-size: 0.88rem; padding-top: 2px; }
    .option-check { width: 18px; height: 18px; }

    /* Nav buttons: always visible at bottom, never pushed off */
    .question-nav {
        flex-shrink: 0;
        padding: 4px 0 80px;
        gap: 8px;
    }
    .btn-nav {
        padding: 10px 16px;
        font-size: 0.85rem;
        gap: 5px;
    }
    .nav-dots { gap: 3px; }

    /* Save status: smaller, less intrusive */
    .save-status {
        bottom: 12px; left: 12px;
        font-size: 0.72rem;
        padding: 5px 10px;
    }

    /* Modals */
    .modal { padding: 28px 20px; }
    .modal-title { font-size: 1.2rem; }
    .modal-body { font-size: 0.88rem; }
}

/* Very small phones (≤ 380px) */
@media (max-width: 380px) {
    .exam-header { padding: 0 8px; gap: 6px; }
    .student-name { max-width: 80px; font-size: 0.78rem; }
    .timer-display { font-size: 1rem; }
    .btn-submit-exam { padding: 7px 10px; }
    .question-card { padding: 12px 10px; }
    .question-text { font-size: 0.88rem; }
    .option-item { padding: 9px 10px; }
    .btn-nav { padding: 9px 12px; font-size: 0.8rem; }
}

/* Login page mobile */
@media (max-width: 480px) {
    .login-container { padding: 24px 16px; }
    .login-title { font-size: 1.35rem; }
    .login-header { margin-bottom: 20px; }
    .subjects-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 8px; }
    .subject-card { padding: 10px 8px; }
    .subject-name { font-size: 0.78rem; }
    .subject-results-grid { grid-template-columns: 1fr; }
    .overall-score-card { gap: 24px; }
    .exam-rules { padding: 12px 14px; }
    .rules-list li { font-size: 0.82rem; }
}

/* Images inside question text must never overflow */
.question-text img {
    max-width: 100%;
    height: auto;
    display: block;
    margin-bottom: 10px;
}

/* Mobile: ensure nav buttons are not hidden behind the fixed calc button */
@media (max-width: 640px) {
    .question-nav {
        padding-bottom: 72px;
    }
}