/* auth.css — Nav, auth pages, lessons list, test page.
   All colours via CSS vars defined in style.css.
   No changes to style.css required. */

/* ── Top nav (all pages) ────────────────────────────────────── */
.app-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 32px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    font-family: var(--font-mono);
}
.nav-brand {
    font-family: var(--font-display);
    color: var(--phosphor);
    text-decoration: none;
    font-size: 1rem;
    letter-spacing: 0.08em;
    text-shadow: var(--glow);
}
.nav-links { display: flex; align-items: center; gap: 20px; font-size: 0.78rem; }
.nav-links a {
    color: var(--muted);
    text-decoration: none;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: color 0.12s;
}
.nav-links a:hover, .nav-links a.active { color: var(--phosphor); }
.nav-user { color: var(--phosphor-dim); font-size: 0.75rem; }

/* ── Auth forms (login / signup) ────────────────────────────── */
.auth-wrap  { max-width: 400px; margin: 60px auto; padding: 0 20px; }
.auth-box   { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 4px; padding: 32px; }
.auth-box h2 {
    font-family: var(--font-display);
    color: var(--phosphor);
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 24px;
}
.form-group              { margin-bottom: 16px; }
.form-group label        { display: block; font-size: 0.7rem; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.form-group input        { width: 100%; background: var(--bg-arena); border: 1px solid var(--border); border-radius: 4px; padding: 10px 12px; color: var(--white); font-family: var(--font-mono); font-size: 0.9rem; outline: none; transition: border-color 0.12s; box-sizing: border-box; }
.form-group input:focus  { border-color: var(--phosphor-dim); }
.btn-full                { width: 100%; margin-top: 8px; padding: 12px; background: var(--phosphor); color: var(--bg); border: none; border-radius: 4px; font-family: var(--font-display); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer; transition: background 0.12s; }
.btn-full:hover          { background: #fff; }
.auth-alt                { text-align: center; margin-top: 16px; font-size: 0.75rem; color: var(--muted); }
.auth-alt a              { color: var(--phosphor-dim); }
.flash-msg               { border-radius: 4px; padding: 10px 12px; font-size: 0.78rem; margin-bottom: 16px; }
.flash-error             { background: rgba(255,68,68,0.1); border: 1px solid rgba(255,68,68,0.3); color: #ff6b6b; }
.flash-success           { background: rgba(57,255,132,0.08); border: 1px solid var(--phosphor-dim); color: var(--phosphor); }

/* ── Page headings ──────────────────────────────────────────── */
.page-heading {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--phosphor);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 24px 24px 0;
    max-width: 760px;
    margin: 0 auto;
}

/* ── Lessons list ───────────────────────────────────────────── */
.lessons-list { max-width: 760px; margin: 20px auto; padding: 0 20px 40px; display: flex; flex-direction: column; gap: 8px; }
.lesson-row   { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 4px; padding: 14px 18px; display: flex; align-items: center; justify-content: space-between; gap: 12px; font-family: var(--font-mono); transition: border-color 0.12s; }
.lesson-row.done { border-color: var(--phosphor-dim); }
.lesson-row-info { flex: 1; min-width: 0; }
.lesson-row-title { font-size: 0.88rem; color: var(--white); }
.lesson-row-meta  { font-size: 0.68rem; color: var(--muted); margin-top: 3px; }
.lesson-row-meta .best { color: var(--phosphor-dim); }
.lesson-actions   { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.badge-done       { font-size: 0.62rem; color: var(--phosphor); border: 1px solid var(--phosphor-dim); border-radius: 3px; padding: 2px 7px; letter-spacing: 0.1em; }
.btn-sm           { font-family: var(--font-display); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 6px 13px; border-radius: 4px; border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer; text-decoration: none; display: inline-block; transition: all 0.12s; }
.btn-sm:hover, .btn-sm.primary { background: var(--phosphor); color: var(--bg); border-color: var(--phosphor); }

/* ── Test page ──────────────────────────────────────────────── */
.test-wrap     { max-width: 860px; margin: 0 auto; padding: 24px 24px 40px; }
.test-topbar   { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.test-timer    { font-family: var(--font-display); font-size: 2.4rem; color: var(--phosphor); text-shadow: var(--glow); line-height: 1; }
.test-timer.urgent { color: var(--red); text-shadow: 0 0 8px rgba(255,68,68,0.6); }
.test-meta     { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.05em; }

/* test stats bar — reuses .stats-bar from style.css, no override needed */

/* ── History table ──────────────────────────────────────────── */
.history-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 0.78rem; margin-top: 8px; }
.history-table th { color: var(--muted); font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; padding: 6px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.history-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); color: var(--white); }
.history-table tr:last-child td { border-bottom: none; }
.history-wrap  { max-width: 760px; margin: 24px auto 0; padding: 0 20px; background: var(--bg-panel); border: 1px solid var(--border); border-radius: 4px; }
.history-title { font-family: var(--font-display); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; padding: 14px 12px 0; }

/* ── Light theme overrides for auth.css components ──────────── */
[data-theme="dark"] .auth-box {
    box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}
[data-theme="dark"] .form-group input {
    background: #f0f0eb;
}
[data-theme="dark"] .form-group input:focus {
    background: #ffffff;
    border-color: var(--phosphor-dim);
}
[data-theme="dark"] .lesson-row {
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
[data-theme="dark"] .lesson-row.done {
    background: #f0faf4;
}
[data-theme="dark"] .history-wrap {
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
[data-theme="dark"] .flash-success {
    background: rgba(26,107,58,0.08);
    border-color: var(--phosphor-dim);
    color: var(--phosphor);
}
.lesson-row.locked {
    opacity: .55;
    pointer-events: none;   /* prevents all clicks on the row */
}
.lesson-row.locked .lesson-row-title { color: var(--muted); }

    
/* ── Lesson locking styles ───────────────────────────────────── */
.lesson-row.locked {
    opacity: .5;
    pointer-events: none;
}
.lesson-row.locked .lesson-row-title { color: var(--muted); }

.locked-btn {
    opacity: .4;
    cursor: not-allowed !important;
    pointer-events: none;
}

/* Next-up lesson — subtle highlight to guide the user */
.lesson-row.next-up {
    border-color: var(--phosphor-dim);
    background: rgba(26,107,58,0.04);
}

/* Pulse animation on the active Start button */
@keyframes pulse-border {
    0%, 100% { box-shadow: 0 0 0 0 rgba(26,107,58,0.4); }
    50%       { box-shadow: 0 0 0 5px rgba(26,107,58,0); }
}
.btn-sm.pulse {
    animation: pulse-border 1.8s ease infinite;
}

/* Progress bar text colour in light mode */
[data-theme="dark"] .lesson-row.next-up {
    border-color: var(--phosphor-dim);
    background: rgba(57,255,132,0.04);
}