/* ============================================================
   Daily Quiz – Frontend CSS
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap');

:root {
    --dq-primary:    #6c63ff;
    --dq-primary-d:  #574fd4;
    --dq-success:    #22c55e;
    --dq-danger:     #ef4444;
    --dq-bg:         #f8f7ff;
    --dq-card:       #ffffff;
    --dq-border:     #e5e4f5;
    --dq-text:       #1e1b4b;
    --dq-text-light: #6b7280;
    --dq-radius:     16px;
    --dq-shadow:     0 4px 24px rgba(108,99,255,.12);
    --dq-font:       'Nunito', sans-serif;
}

/* ── Wrapper ────────────────────────────────────────────── */
.dq-wrapper {
    font-family: var(--dq-font);
    max-width: 720px;
    margin: 0 auto 2rem;
    color: var(--dq-text);
}

/* ── Header ─────────────────────────────────────────────── */
.dq-header {
    background: linear-gradient(135deg, var(--dq-primary) 0%, #a78bfa 100%);
    border-radius: var(--dq-radius) var(--dq-radius) 0 0;
    padding: 2rem 2rem 1.5rem;
    color: #fff;
    text-align: center;
}
.dq-date-badge {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    background: rgba(255,255,255,.2);
    border-radius: 50px;
    padding: .25rem .9rem;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .04em;
    margin-bottom: .75rem;
}
.dq-title {
    font-size: 1.8rem;
    font-weight: 900;
    margin: 0 0 .25rem;
}
.dq-subtitle {
    font-size: .9rem;
    opacity: .85;
    margin: 0 0 1.2rem;
}

/* Progress bar */
.dq-progress-bar {
    background: rgba(255,255,255,.25);
    border-radius: 50px;
    height: 8px;
    overflow: hidden;
    margin-bottom: .75rem;
}
.dq-progress-fill {
    background: #fff;
    height: 100%;
    border-radius: 50px;
    transition: width .4s ease;
}

/* Meta (counter + timer) */
.dq-meta {
    display: flex;
    justify-content: space-between;
    font-size: .85rem;
    font-weight: 700;
    opacity: .9;
}
.dq-timer {
    font-variant-numeric: tabular-nums;
    background: rgba(0,0,0,.15);
    border-radius: 50px;
    padding: .15rem .6rem;
}

/* ── Questions ──────────────────────────────────────────── */
.dq-questions {
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-top: none;
    padding: 1.5rem 2rem;
}

.dq-question-block {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px dashed var(--dq-border);
    animation: dqFadeIn .35s ease both;
}
.dq-question-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

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

.dq-question-number {
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--dq-primary);
    margin-bottom: .4rem;
}
.dq-question-text {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.55;
    margin: 0 0 1rem;
}

/* Answer options */
.dq-answer-options {
    display: flex;
    flex-direction: column;
    gap: .55rem;
}
.dq-answer-label {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .7rem 1rem;
    border: 2px solid var(--dq-border);
    border-radius: 10px;
    cursor: pointer;
    transition: all .2s ease;
    position: relative;
}
.dq-answer-label:hover {
    border-color: var(--dq-primary);
    background: #f5f3ff;
}
.dq-answer-label.selected {
    border-color: var(--dq-primary);
    background: #ede9fe;
}
.dq-radio {
    display: none;
}
.dq-answer-letter {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--dq-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .78rem;
    font-weight: 800;
    flex-shrink: 0;
    transition: all .2s;
}
.dq-answer-label.selected .dq-answer-letter {
    background: var(--dq-primary);
    color: #fff;
}
.dq-answer-text {
    font-size: .95rem;
    font-weight: 600;
    line-height: 1.4;
}

/* ── Result states on review ────────────────────────────── */
.dq-answer-label.dq-ans-correct {
    border-color: var(--dq-success);
    background: #f0fdf4;
}
.dq-answer-label.dq-ans-correct .dq-answer-letter {
    background: var(--dq-success);
    color: #fff;
}
.dq-answer-label.dq-ans-wrong {
    border-color: var(--dq-danger);
    background: #fef2f2;
}
.dq-answer-label.dq-ans-wrong .dq-answer-letter {
    background: var(--dq-danger);
    color: #fff;
}

/* ── Footer / Submit ────────────────────────────────────── */
.dq-footer {
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-top: none;
    border-radius: 0 0 var(--dq-radius) var(--dq-radius);
    padding: 1.25rem 2rem;
    text-align: center;
}

/* ── Buttons ─────────────────────────────────────────────── */
.dq-btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .75rem 1.75rem;
    border-radius: 50px;
    font-family: var(--dq-font);
    font-size: .95rem;
    font-weight: 800;
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
    transition: all .2s ease;
}
.dq-btn-primary {
    background: var(--dq-primary);
    color: #fff;
}
.dq-btn-primary:hover {
    background: var(--dq-primary-d);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108,99,255,.4);
}
.dq-btn-outline {
    background: transparent;
    border-color: var(--dq-primary);
    color: var(--dq-primary);
}
.dq-btn-outline:hover {
    background: var(--dq-primary);
    color: #fff;
}
.dq-submit-btn {
    min-width: 200px;
    justify-content: center;
}
.dq-submit-btn.loading {
    opacity: .7;
    pointer-events: none;
}

/* ── Result View ─────────────────────────────────────────── */
.dq-result-view .dq-result-header {
    background: linear-gradient(135deg, #1e1b4b 0%, var(--dq-primary) 100%);
    border-radius: var(--dq-radius) var(--dq-radius) 0 0;
    padding: 2.5rem 2rem 2rem;
    text-align: center;
    color: #fff;
}
.dq-result-emoji { font-size: 3rem; margin-bottom: .5rem; }
.dq-result-view h2 {
    font-size: 1.6rem;
    font-weight: 900;
    margin: 0 0 1.25rem;
}

/* Score ring */
.dq-result-score-ring {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 1.25rem;
}
.dq-ring { transform: rotate(-90deg); }
.dq-ring-bg {
    fill: none;
    stroke: rgba(255,255,255,.2);
    stroke-width: 10;
}
.dq-ring-fill {
    fill: none;
    stroke: #fff;
    stroke-width: 10;
    stroke-linecap: round;
    stroke-dasharray: 339.292;
    transition: stroke-dashoffset 1.2s cubic-bezier(.4,0,.2,1);
}
.dq-ring-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    color: #fff;
}

/* Meta row */
.dq-result-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
}
.dq-meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .15rem;
}
.dq-meta-label {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .06em;
    opacity: .7;
    text-transform: uppercase;
}
.dq-meta-value {
    font-size: 1.3rem;
    font-weight: 900;
}

/* Answer review */
.dq-answer-review {
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-top: none;
    padding: 1.5rem 2rem;
}
.dq-answer-review h3 {
    font-size: 1rem;
    font-weight: 800;
    margin: 0 0 1rem;
    color: var(--dq-text);
}
.dq-review-item {
    display: flex;
    gap: .75rem;
    padding: .75rem 1rem;
    border-radius: 10px;
    margin-bottom: .6rem;
    border: 2px solid transparent;
}
.dq-review-item.dq-correct {
    background: #f0fdf4;
    border-color: #bbf7d0;
}
.dq-review-item.dq-wrong {
    background: #fef2f2;
    border-color: #fecaca;
}
.dq-review-icon { font-size: 1.2rem; flex-shrink: 0; }
.dq-review-question {
    margin: 0 0 .3rem;
    font-size: .9rem;
    font-weight: 700;
    line-height: 1.4;
}
.dq-review-explanation {
    margin: 0;
    font-size: .82rem;
    color: var(--dq-text-light);
    font-weight: 600;
    line-height: 1.5;
}

.dq-result-actions {
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-top: none;
    border-radius: 0 0 var(--dq-radius) var(--dq-radius);
    padding: 1.25rem 2rem;
    text-align: center;
}

/* ── Result Container (AJAX) ────────────────────────────── */
.dq-result-container {
    margin-top: 2rem;
}

/* ── Leaderboard ─────────────────────────────────────────── */
.dq-leaderboard {
    font-family: var(--dq-font);
    max-width: 600px;
    margin: 0 auto 2rem;
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-radius: var(--dq-radius);
    overflow: hidden;
    box-shadow: var(--dq-shadow);
}
.dq-lb-title {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: #fff;
    margin: 0;
    padding: 1.25rem 1.5rem;
    font-size: 1.2rem;
    font-weight: 900;
}
.dq-lb-date {
    padding: .5rem 1.5rem;
    font-size: .8rem;
    color: var(--dq-text-light);
    font-weight: 700;
    border-bottom: 1px solid var(--dq-border);
    margin: 0;
}
.dq-lb-empty {
    padding: 1.5rem;
    color: var(--dq-text-light);
    font-weight: 600;
    margin: 0;
}
.dq-lb-table-wrap {
    overflow-x: auto;
}
.dq-lb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9rem;
    font-weight: 600;
}
.dq-lb-table thead tr {
    background: var(--dq-bg);
}
.dq-lb-table th, .dq-lb-table td {
    padding: .7rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--dq-border);
}
.dq-lb-table tbody tr:hover { background: var(--dq-bg); }
.dq-lb-table tbody tr:last-child td { border-bottom: none; }
.dq-lb-me { background: #ede9fe !important; font-weight: 800; }
.dq-lb-rank { font-size: 1.1rem; }
.dq-lb-score { font-weight: 800; color: var(--dq-primary); }
.dq-lb-you {
    font-size: .72rem;
    background: var(--dq-primary);
    color: #fff;
    border-radius: 4px;
    padding: .05rem .35rem;
    vertical-align: middle;
}

/* ── Stats ───────────────────────────────────────────────── */
.dq-stats {
    font-family: var(--dq-font);
    max-width: 600px;
    margin: 0 auto 2rem;
}
.dq-stats h2 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}
.dq-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 1rem;
}
.dq-stat-card {
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-radius: var(--dq-radius);
    padding: 1.25rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: .3rem;
    box-shadow: var(--dq-shadow);
}
.dq-stat-card .dq-stat-value {
    font-size: 2rem;
    font-weight: 900;
    color: var(--dq-primary);
    line-height: 1;
}
.dq-stat-card .dq-stat-label {
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--dq-text-light);
}
.dq-stat-best { border-color: #fbbf24; }
.dq-stat-best .dq-stat-value { color: #d97706; }

/* ── Login prompt & Notice ───────────────────────────────── */
.dq-login-prompt {
    font-family: var(--dq-font);
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--dq-card);
    border: 1px solid var(--dq-border);
    border-radius: var(--dq-radius);
    max-width: 440px;
    margin: 0 auto;
}
.dq-login-prompt p {
    font-weight: 600;
    color: var(--dq-text-light);
    margin-bottom: 1.25rem;
}
.dq-notice {
    font-family: var(--dq-font);
    background: #fffbeb;
    border-left: 4px solid #f59e0b;
    padding: 1rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    color: #92400e;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 580px) {
    .dq-header, .dq-questions, .dq-footer,
    .dq-result-view .dq-result-header,
    .dq-answer-review, .dq-result-actions {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .dq-title { font-size: 1.4rem; }
    .dq-stats-grid { grid-template-columns: 1fr 1fr; }
}