/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --navy:   #1a1a2e;
    --purple: #16213e;
    --accent: #7c3aed;
    --accent-hover: #6d28d9;
    --green:  #059669;
    --red:    #dc2626;
    --yellow: #d97706;
    --blue:   #2563eb;
    --light:  #f5f3ff;
    --text:   #1e1b4b;
    --muted:  #6b7280;
    --border: #e5e7eb;
    --white:  #ffffff;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(0,0,0,.10);
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--light);
    color: var(--text);
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
.page-wrap   { min-height: 100vh; display: flex; flex-direction: column; }
.container   { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }
.main-content { flex: 1; padding: 2rem 0; }

/* ── Header ── */
.site-header {
    background: var(--navy);
    color: var(--white);
    padding: .9rem 0;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo { font-size: 1.75rem; font-weight: 800; color: var(--white); letter-spacing: -1px; }
.logo span { color: #a78bfa; }
.nav-links { display: flex; gap: 1rem; align-items: center; }
.nav-links a { color: #c4b5fd; font-size: .9rem; }
.nav-links a:hover { color: var(--white); text-decoration: none; }

/* ── Cards ── */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
}
.card-sm { padding: 1.25rem 1.5rem; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .65rem 1.4rem;
    border-radius: 8px;
    font-size: .95rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background .15s, transform .1s;
    text-decoration: none;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }

.btn-primary  { background: var(--accent);  color: var(--white); }
.btn-primary:hover  { background: var(--accent-hover); color: var(--white); }

.btn-success  { background: var(--green);   color: var(--white); }
.btn-success:hover  { background: #047857; color: var(--white); }

.btn-danger   { background: var(--red);     color: var(--white); }
.btn-danger:hover   { background: #b91c1c; color: var(--white); }

.btn-secondary { background: #e5e7eb; color: var(--text); }
.btn-secondary:hover { background: #d1d5db; color: var(--text); }

.btn-lg { padding: .85rem 2rem; font-size: 1.05rem; }
.btn-sm { padding: .4rem .9rem; font-size: .82rem; }
.btn-block { width: 100%; justify-content: center; }

/* ── Forms ── */
.form-group { margin-bottom: 1.1rem; }
.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: .35rem;
    color: var(--text);
}
.form-control {
    width: 100%;
    padding: .65rem .9rem;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: .95rem;
    transition: border-color .15s;
    background: var(--white);
}
.form-control:focus { outline: none; border-color: var(--accent); }

/* ── Alerts ── */
.alert {
    padding: .8rem 1.1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: .9rem;
    font-weight: 500;
}
.alert-error   { background: #fee2e2; color: #991b1b; }
.alert-success { background: #d1fae5; color: #065f46; }
.alert-info    { background: #ede9fe; color: #4c1d95; }

/* ── Landing page ── */
.landing-hero {
    text-align: center;
    padding: 3rem 1rem 2rem;
}
.landing-hero h1 { font-size: 3rem; font-weight: 800; color: var(--navy); }
.landing-hero p  { color: var(--muted); margin-top: .5rem; font-size: 1.1rem; }

.landing-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 820px;
    margin: 2rem auto 0;
}
@media (max-width: 600px) {
    .landing-panels { grid-template-columns: 1fr; }
    .landing-hero h1 { font-size: 2rem; }
}
.panel-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    padding-bottom: .75rem;
    border-bottom: 2px solid var(--border);
}

/* ── Dashboard ── */
.page-title {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 1.25rem;
}
.quiz-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.4rem;
    display: flex;
    flex-direction: column;
    gap: .6rem;
}
.quiz-card-title { font-size: 1.05rem; font-weight: 700; }
.quiz-card-meta  { font-size: .82rem; color: var(--muted); }
.quiz-card-actions { display: flex; gap: .5rem; margin-top: .5rem; flex-wrap: wrap; }

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--muted);
}
.empty-state p { margin-bottom: 1rem; font-size: 1rem; }

/* ── Answer color blocks (used in game) ── */
.ans-a { background: var(--red);    color: #fff; }
.ans-b { background: var(--blue);   color: #fff; }
.ans-c { background: var(--yellow); color: #fff; }
.ans-d { background: var(--green);  color: #fff; }

.answer-btn {
    flex: 1 1 calc(50% - .5rem);
    min-height: 80px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: 1rem 1.25rem;
    transition: opacity .15s, transform .1s;
}
.answer-btn:hover  { opacity: .88; transform: scale(1.02); }
.answer-btn:active { transform: scale(.98); }
.answer-btn.selected   { outline: 4px solid #fff; }
.answer-btn.disabled   { opacity: .5; cursor: not-allowed; pointer-events: none; }

.answer-shape {
    width: 32px; height: 32px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

/* ── Leaderboard ── */
.leaderboard { list-style: none; }
.leaderboard li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: .75rem 1rem;
    border-radius: 8px;
    margin-bottom: .5rem;
    background: var(--light);
    font-weight: 600;
}
.leaderboard li:first-child  { background: #fef9c3; }
.leaderboard li:nth-child(2) { background: #f1f5f9; }
.leaderboard li:nth-child(3) { background: #fef3c7; }
.lb-rank   { font-size: 1.2rem; width: 2rem; text-align: center; }
.lb-name   { flex: 1; }
.lb-score  { font-size: 1rem; color: var(--accent); }

/* ── Utilities ── */
.text-center { text-align: center; }
.text-muted  { color: var(--muted); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }