/* quiz-styles.css — GrantApp AI */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700;800&family=DM+Sans:wght@400;500&family=DM+Mono:wght@400;500&display=swap');

:root {
    --bg:          #0a0a0f;
    --surface:     #111118;
    --surface-2:   #18181f;
    --border:      #1e1e2e;
    --border-2:    #2a2a3a;
    --text:        #f0eff4;
    --muted:       #7a7a8c;
    --accent:      #f59e0b;
    --accent-dim:  rgba(245,158,11,0.15);
    --green:       #10b981;
    --green-dim:   rgba(16,185,129,0.15);
    --red:         #ef4444;
    --red-dim:     rgba(239,68,68,0.12);
    --flag:        #f59e0b;
}

/* ── BASE ── */
.quiz-body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    overflow: hidden;
    height: 100vh;
    margin: 0;
    padding: 0;
}

/* ── ERROR BANNER ── */
.error-banner {
    position: fixed; top: 0; left: 0; right: 0; z-index: 2000;
    background: #7f1d1d;
    border-bottom: 1px solid rgba(239,68,68,0.4);
    padding: 0.65rem 1.5rem;
}
.error-content { display: flex; align-items: center; gap: 0.75rem; color: #fee2e2; font-size: 0.85rem; }
.error-content h3 { font-size: 0.85rem; font-weight: 700; }
.error-content p  { opacity: 0.85; }
.error-content .btn-icon { margin-left: auto; }

/* ── FALLBACK ── */
.fallback-container {
    position: fixed; inset: 0; background: var(--bg); z-index: 1500;
    display: flex; align-items: center; justify-content: center;
}
.fallback-content { text-align: center; max-width: 400px; padding: 2rem; }
.fallback-icon { font-size: 3rem; color: var(--accent); margin-bottom: 1.25rem; }
.fallback-content h2 { font-family: 'Syne', sans-serif; font-size: 1.5rem; font-weight: 700; margin-bottom: 0.6rem; }
.fallback-content p  { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.25rem; line-height: 1.6; }
.fallback-timer { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.25rem; }
#fallback-countdown { color: var(--accent); font-family: 'DM Mono', monospace; }

/* ── FIXED HEADER ── */
.quiz-header {
    position: fixed; top: 0; left: 0; right: 0;
    height: 64px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}
.quiz-header-container {
    display: flex; align-items: center; justify-content: space-between;
    height: 100%; padding: 0 1.25rem; gap: 1rem;
}
.quiz-header-left,
.quiz-header-right  { display: flex; align-items: center; gap: 0.65rem; flex: 1; }
.quiz-header-right  { justify-content: flex-end; }

.subject-info { display: flex; flex-direction: column; gap: 0.1rem; }
.subject-name {
    font-family: 'Syne', sans-serif; font-size: 0.95rem; font-weight: 700;
    color: var(--accent); letter-spacing: -0.01em;
}
.subject-meta { font-size: 0.7rem; color: var(--muted); }

/* ── TIMER ─────────────────────────────────────────────────── */
/* Sits centre of header. Ring + mono digits. */
.quiz-timer-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem 0.4rem 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--border-2);
    background: var(--surface-2);
    transition: border-color 0.4s, background 0.4s, box-shadow 0.4s;
    position: relative;
}

/* Ring wrapper */
.timer-progress-ring {
    position: relative;
    width: 38px; height: 38px; flex-shrink: 0;
}
.timer-progress-ring svg {
    width: 38px; height: 38px;
    display: block;
    /* The JS targets r=26 giving circumference 163.36 — keep those numbers */
}

/* Hidden clock icon (ring is the visual) */
.timer-icon { display: none; }

/* Digits */
.timer-display {
    font-family: 'DM Mono', monospace;
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.04em;
    min-width: 68px;
    text-align: center;
    transition: color 0.3s;
}

/* Warning < 5 min */
.quiz-timer-container.warning {
    border-color: rgba(245,158,11,0.4);
    background: rgba(245,158,11,0.07);
    box-shadow: 0 0 18px rgba(245,158,11,0.12);
}
.timer-display.warning { color: #fbbf24; }

/* Danger < 1 min */
.quiz-timer-container.danger {
    border-color: rgba(239,68,68,0.5);
    background: var(--red-dim);
    animation: ring-pulse 1s infinite;
}
.timer-display.danger { color: var(--red); animation: digit-blink 0.8s infinite; }

@keyframes ring-pulse {
    0%,100% { box-shadow: 0 0 16px rgba(239,68,68,0.15); }
    50%      { box-shadow: 0 0 28px rgba(239,68,68,0.35); }
}
@keyframes digit-blink {
    0%,100% { opacity: 1; }
    50%      { opacity: 0.45; }
}
/* ─────────────────────────────────────────────────────────── */

/* ── BUTTONS ── */
.btn-icon {
    background: var(--surface-2); border: 1px solid var(--border-2); color: var(--muted);
    width: 36px; height: 36px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all 0.2s; font-size: 0.85rem;
}
.btn-icon:hover { color: var(--text); border-color: var(--muted); }

.btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 0.9rem; border-radius: 8px;
    font-family: 'DM Sans', sans-serif; font-size: 0.82rem; font-weight: 500;
    cursor: pointer; border: none; transition: all 0.2s;
}
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.78rem; }

.btn-danger {
    background: var(--red-dim); color: var(--red);
    border: 1px solid rgba(239,68,68,0.3);
}
.btn-danger:hover { background: rgba(239,68,68,0.2); border-color: var(--red); }

.btn-primary  { background: var(--accent); color: #000; font-weight: 700; }
.btn-primary:hover { opacity: 0.88; }

.btn-secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border-2); }
.btn-secondary:hover { border-color: var(--muted); }

/* ── LAYOUT ── */
.quiz-container {
    display: flex;
    margin-top: 64px;
    height: calc(100vh - 64px);
    overflow: hidden;
}

/* ── SIDEBAR ── */
.quiz-sidebar {
    width: 255px; flex-shrink: 0;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    overflow-y: auto;
    transition: transform 0.3s ease;
}
.sidebar-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.1rem 1.25rem; border-bottom: 1px solid var(--border);
}
.sidebar-header h3 {
    font-family: 'Syne', sans-serif; font-size: 0.7rem; font-weight: 700;
    letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted);
}
.btn-close-sidebar { display: none; }

.sidebar-stats {
    display: grid; grid-template-columns: repeat(3,1fr); gap: 0.4rem;
    padding: 0.85rem; background: var(--surface-2); border-bottom: 1px solid var(--border);
}
.stat-item { text-align: center; padding: 0.35rem; }
.stat-value { font-family: 'Syne', sans-serif; font-size: 1.35rem; font-weight: 800; color: var(--text); }
.stat-label { font-size: 0.65rem; color: var(--muted); margin-top: 0.1rem; text-transform: uppercase; letter-spacing: 0.06em; }

/* ── PALETTE ── */
.question-palette {
    flex: 1; padding: 0.85rem;
    display: grid; grid-template-columns: repeat(5,1fr); gap: 0.4rem;
    overflow-y: auto;
}
.palette-btn {
    aspect-ratio: 1; border-radius: 6px;
    border: 1px solid var(--border-2); background: var(--surface-2);
    font-size: 0.78rem; font-weight: 600; color: var(--muted);
    cursor: pointer; transition: all 0.15s;
    display: flex; align-items: center; justify-content: center;
}
.palette-btn:hover  { border-color: var(--muted); color: var(--text); }
.palette-btn.current  { background: var(--accent); border-color: var(--accent); color: #000; font-weight: 800; }
.palette-btn.answered { background: var(--green-dim); border-color: var(--green); color: var(--green); }
.palette-btn.flagged  { background: rgba(245,158,11,0.15); border-color: var(--flag); color: var(--flag); }

/* Legend */
.sidebar-legend {
    padding: 0.85rem 1.25rem; border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 0.4rem;
}
.legend-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.7rem; color: var(--muted); }
.legend-dot { width: 10px; height: 10px; border-radius: 3px; background: var(--border-2); border: 1px solid var(--border-2); }
.legend-dot.answered  { background: var(--green);  border-color: var(--green); }
.legend-dot.current   { background: var(--accent);  border-color: var(--accent); }
.legend-dot.flagged   { background: var(--flag);    border-color: var(--flag); }

/* ── MAIN AREA ── */
.quiz-main {
    flex: 1; overflow-y: auto; padding: 1.5rem;
    display: flex; flex-direction: column; gap: 1.25rem;
}

/* ── QUESTION CARD ── */
.question-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
    padding: 1.75rem; flex: 1;
    display: flex; flex-direction: column; gap: 1.25rem;
}
.question-header {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: 1rem; border-bottom: 1px solid var(--border);
}
.question-number { font-family: 'Syne', sans-serif; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }

.btn-flag {
    display: flex; align-items: center; gap: 0.4rem;
    background: var(--surface-2); border: 1px solid var(--border-2); color: var(--muted);
    padding: 0.4rem 0.85rem; border-radius: 8px; font-size: 0.8rem; font-weight: 500; cursor: pointer;
    transition: all 0.2s;
}
.btn-flag:hover  { border-color: var(--flag); color: var(--flag); }
.btn-flag.flagged { background: rgba(245,158,11,0.12); border-color: var(--flag); color: var(--flag); }

.question-text { font-size: 1.05rem; line-height: 1.75; color: var(--text); font-weight: 400; }

/* ── OPTIONS ── */
.options-container { display: flex; flex-direction: column; gap: 0.75rem; }

.option {
    display: flex; align-items: flex-start; gap: 0.85rem;
    padding: 0.9rem 1rem; border-radius: 10px;
    border: 1px solid var(--border-2); background: var(--surface-2);
    cursor: pointer; transition: all 0.15s;
}
.option:hover { border-color: var(--accent); background: rgba(245,158,11,0.05); }
.option.selected { border-color: var(--accent); background: var(--accent-dim); }

.option-label {
    font-family: 'Syne', sans-serif; font-size: 0.78rem; font-weight: 800;
    color: var(--accent); background: var(--accent-dim);
    border: 1px solid rgba(245,158,11,0.3);
    width: 28px; height: 28px; border-radius: 6px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.option.selected .option-label { background: var(--accent); color: #000; border-color: var(--accent); }
.option-text { font-size: 0.92rem; line-height: 1.5; padding-top: 0.15rem; color: var(--text); }

/* Review mode */
.option.correct  { border-color: var(--green); background: var(--green-dim); }
.option.incorrect { border-color: var(--red);   background: var(--red-dim); }
.option.correct  .option-label { background: var(--green); color: #fff; border-color: var(--green); }
.option.incorrect .option-label { background: var(--red);   color: #fff; border-color: var(--red); }

/* ── EXPLANATION ── */
.question-explanation {
    padding: 1rem; border-radius: 10px;
    background: rgba(59,130,246,0.06); border: 1px solid rgba(59,130,246,0.2);
}
.explanation-header { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; font-size: 0.85rem; margin-bottom: 0.5rem; color: #60a5fa; }
.explanation-content { font-size: 0.88rem; color: var(--muted); line-height: 1.65; }

/* ── NAVIGATION ── */
.quiz-navigation {
    display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
}

/* ── MOBILE PALETTE TRIGGER ── */
.mobile-palette-trigger {
    display: none; position: fixed; bottom: 0; left: 0; right: 0;
    background: var(--surface); border-top: 1px solid var(--border);
    padding: 0.85rem; align-items: center; justify-content: center;
    gap: 0.5rem; font-size: 0.85rem; font-weight: 600; color: var(--muted);
    cursor: pointer; z-index: 500;
}

/* ── MODALS ── */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    z-index: 2000; padding: 1rem;
}
.modal-overlay.hidden { display: none; }

.modal {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; width: 100%; max-width: 440px;
    overflow: hidden; box-shadow: 0 24px 48px rgba(0,0,0,0.5);
}
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-family: 'Syne', sans-serif; font-size: 1.05rem; font-weight: 700; }
.modal-body  { padding: 1.5rem; }
.modal-footer {
    display: flex; gap: 0.75rem; justify-content: flex-end;
    padding: 1.25rem 1.5rem; border-top: 1px solid var(--border);
}

.submit-summary { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1.25rem; }
.summary-item { display: flex; justify-content: space-between; font-size: 0.88rem; }
.summary-label { color: var(--muted); }
.summary-value { font-weight: 600; }
.answered-text  { color: var(--green); }
.warning-text   { color: var(--red); }

.warning-message {
    display: flex; align-items: flex-start; gap: 0.6rem;
    padding: 0.85rem; border-radius: 8px;
    background: var(--red-dim); border: 1px solid rgba(239,68,68,0.25);
    font-size: 0.82rem; color: #fca5a5;
}

/* ── TIME UP MODAL ── */
#timeUpModal .modal { text-align: center; padding: 2rem; }
#timeUpModal .modal h2 { font-family: 'Syne', sans-serif; font-size: 1.5rem; font-weight: 800; margin-bottom: 0.5rem; }
#timeUpModal .modal p  { color: var(--muted); margin-bottom: 1.5rem; }

/* ── CALCULATOR ── */
.calculator-modal { max-width: 320px; }
.calculator { display: flex; flex-direction: column; gap: 0.75rem; }
.calculator-display {
    width: 100%; padding: 0.85rem 1rem; border-radius: 8px;
    background: var(--surface-2); border: 1px solid var(--border-2);
    color: var(--text); font-family: 'DM Mono', monospace; font-size: 1.25rem;
    text-align: right;
}
.calculator-buttons { display: grid; grid-template-columns: repeat(4,1fr); gap: 0.5rem; }
.calc-btn {
    padding: 0.75rem; border-radius: 8px; border: 1px solid var(--border-2);
    background: var(--surface-2); color: var(--text); font-size: 0.9rem;
    font-weight: 600; cursor: pointer; transition: all 0.15s;
}
.calc-btn:hover { border-color: var(--muted); background: #1e1e2e; }
.calc-equals { background: var(--accent); color: #000; border-color: var(--accent); }
.calc-equals:hover { opacity: 0.88; }

/* ── HIDDEN UTILITY ── */
.hidden { display: none !important; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
    .quiz-sidebar {
        position: fixed; top: 64px; left: 0; bottom: 0;
        z-index: 900; transform: translateX(-100%);
    }
    .quiz-sidebar.open { transform: translateX(0); }
    .btn-close-sidebar { display: flex; }
    .mobile-palette-trigger { display: flex; }
    .quiz-main { padding-bottom: 4rem; }
}

@media (max-width: 640px) {
    .quiz-header-container { padding: 0 0.85rem; gap: 0.5rem; }
    .subject-info { display: none; }
    .timer-display { font-size: 1.1rem; min-width: 58px; }
    .timer-progress-ring { width: 32px; height: 32px; }
    .quiz-main { padding: 1rem; }
    .question-card { padding: 1.25rem; }
    .quiz-navigation { flex-wrap: wrap; }
    .quiz-navigation .btn { flex: 1; justify-content: center; }
}

    /* ── COMPREHENSION PASSAGE PANEL ── */
/* Append this block to quiz-styles.css                                    */
/* The panel lives inside .quiz-main, above .question-card.               */
/* It is shown/hidden by JS via the .hidden class already defined.        */

.passage-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 14px;
    overflow: hidden;
    flex-shrink: 0;
}

.passage-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
    gap: 0.75rem;
}

.passage-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Syne', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

.passage-label i { font-size: 0.85rem; }

.passage-title-text {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--muted);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-passage-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--surface-2);
    border: 1px solid var(--border-2);
    color: var(--muted);
    padding: 0.35rem 0.75rem;
    border-radius: 7px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-passage-toggle:hover { border-color: var(--accent); color: var(--accent); }

.passage-body {
    padding: 1.25rem 1.5rem;
    font-size: 0.9rem;
    line-height: 1.85;
    color: var(--text);
    max-height: 220px;
    overflow-y: auto;
}

/* Scrollbar styling for passage body */
.passage-body::-webkit-scrollbar { width: 4px; }
.passage-body::-webkit-scrollbar-track { background: transparent; }
.passage-body::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 2px; }

/* Passage body typography */
.passage-body p  { margin-bottom: 0.85rem; }
.passage-body p:last-child { margin-bottom: 0; }

/* Palette dot for questions inside a passage group */
.palette-btn.has-passage:not(.answered):not(.current) {
    border-color: rgba(245,158,11,0.3);
}

/* Keyboard hint */
.passage-header .passage-kbd-hint {
    font-size: 0.65rem;
    color: var(--border-2);
    margin-left: auto;
    padding-right: 0.25rem;
}

@media (max-width: 640px) {
    .passage-body {
        max-height: 160px;
        padding: 1rem;
    }
    .passage-title-text { display: none; }
}