/* ═══════════════════════════════════════════════════════════════════════════
   SIGNDEAF — SMART PRACTICE SESSION
   Adaptive spaced-repetition flashcard interface
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Page wrapper ───────────────────────────────────────────────────────── */
.sdpr-page { padding: 0 0 80px; min-height: 100vh; }

/* ── Hero: session overview ─────────────────────────────────────────────── */
.sdpr-hero {
    background: linear-gradient(160deg, #1c2f6b 0%, #0f1b35 100%);
    padding: 56px 24px 80px;
    position: relative;
    overflow: hidden;
}
.sdpr-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(28,176,246,.12), transparent),
        radial-gradient(ellipse 40% 60% at 80% 30%, rgba(255,217,0,.06), transparent);
    pointer-events: none;
}
.sdpr-hero-inner {
    max-width: 680px;
    margin: 0 auto;
    position: relative;
    text-align: center;
}
.sdpr-hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,217,0,.15);
    border: 1px solid rgba(255,217,0,.3);
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #ffd900;
    margin-bottom: 20px;
}
.sdpr-hero-h1 {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 900;
    color: #fff;
    margin: 0 0 12px;
    line-height: 1.1;
    letter-spacing: -.02em;
}
.sdpr-hero-sub {
    font-size: 16px;
    color: rgba(255,255,255,.65);
    margin: 0 0 32px;
    line-height: 1.6;
}

/* Stats row */
.sdpr-hero-stats {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.sdpr-hero-stat {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 16px;
    padding: 16px 20px;
    text-align: center;
    min-width: 80px;
}
.sdpr-hero-stat-num {
    display: block;
    font-size: 28px;
    font-weight: 900;
    color: #fff;
    line-height: 1;
    margin-bottom: 4px;
}
.sdpr-hero-stat-num.is-due { color: #ffd900; }
.sdpr-hero-stat-label {
    font-size: 11px;
    color: rgba(255,255,255,.55);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* Start button */
.sdpr-start-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 40px;
    background: linear-gradient(135deg, #1971c2, #1cb0f6);
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: 0 8px 32px rgba(25,113,194,.5), 0 0 0 3px rgba(28,176,246,.2);
    transition: transform .15s, box-shadow .15s;
    text-decoration: none;
}
.sdpr-start-btn:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(25,113,194,.6), 0 0 0 4px rgba(28,176,246,.25); color: #fff; text-decoration: none; }
.sdpr-start-btn:active { transform: translateY(-1px); }

.sdpr-mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 12px;
    color: rgba(255,255,255,.5);
}
.sdpr-mode-badge strong { color: rgba(255,255,255,.75); }

/* ── XP / level bar below hero ───────────────────────────────────────────── */
.sdpr-xp-bar-wrap {
    background: #0f1b35;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid rgba(255,255,255,.07);
}
.sdpr-xp-level-icon { font-size: 22px; flex-shrink: 0; }
.sdpr-xp-info { flex: 1; min-width: 0; }
.sdpr-xp-label {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 6px;
}
.sdpr-xp-level-title { font-size: 12px; font-weight: 700; color: rgba(255,255,255,.8); }
.sdpr-xp-amount { font-size: 11px; color: rgba(255,255,255,.45); }
.sdpr-xp-track {
    background: rgba(255,255,255,.12);
    border-radius: 999px;
    height: 8px;
    overflow: hidden;
}
.sdpr-xp-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffd900, #ffb700);
    border-radius: 999px;
    transition: width .6s cubic-bezier(.22,1,.36,1);
}

/* ── Main session area ───────────────────────────────────────────────────── */
.sdpr-session {
    max-width: 680px;
    margin: 0 auto;
    padding: 40px 24px;
    display: none; /* shown by JS when session starts */
}
.sdpr-session.is-active { display: block; }

/* Progress bar */
.sdpr-progress-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
}
.sdpr-progress-track {
    flex: 1;
    background: var(--theme-line, #cdd9f5);
    border-radius: 999px;
    height: 8px;
    overflow: hidden;
}
.sdpr-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #1971c2, #1cb0f6);
    border-radius: 999px;
    transition: width .4s ease;
}
.sdpr-progress-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--theme-muted, #4a6a9b);
    white-space: nowrap;
}

/* ── Flashcard ───────────────────────────────────────────────────────────── */
.sdpr-card {
    background: #fff;
    border-radius: 28px;
    box-shadow: 0 8px 40px rgba(25,113,194,.14), 0 2px 0 rgba(25,113,194,.07);
    overflow: hidden;
    margin-bottom: 24px;
    animation: sdCardAppear .4s cubic-bezier(.34,1.4,.64,1) both;
    will-change: transform, opacity;
}
.sdpr-card.is-exiting {
    animation: sdCardExit .3s ease-in forwards;
}
@keyframes sdCardAppear {
    from { opacity: 0; transform: translateY(20px) scale(.96); }
    to   { opacity: 1; transform: translateY(0)   scale(1); }
}
@keyframes sdCardExit {
    from { opacity: 1; transform: translateX(0)    scale(1); }
    to   { opacity: 0; transform: translateX(-40px) scale(.94); }
}

/* Card front (question) */
.sdpr-card-front {
    padding: 40px 36px;
    text-align: center;
    border-bottom: 1px solid var(--theme-line, #cdd9f5);
}
.sdpr-card-cefr {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .06em;
    background: #e8f2ff;
    color: #1971c2;
    margin-bottom: 16px;
}
.sdpr-card-word {
    font-size: clamp(36px, 6vw, 60px);
    font-weight: 900;
    color: var(--theme-ink, #0f1b35);
    letter-spacing: -.03em;
    line-height: 1;
    margin: 0 0 16px;
}
.sdpr-card-prompt {
    font-size: 15px;
    color: var(--theme-muted, #4a6a9b);
    margin: 0;
}

/* Card reveal area (video + info, hidden until revealed) */
.sdpr-card-back { display: none; }
.sdpr-card-back.is-visible { display: block; }

.sdpr-card-video-wrap {
    background: #000;
    position: relative;
    aspect-ratio: 16 / 9;
}
.sdpr-card-video {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}
.sdpr-card-no-video {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 180px;
    background: #f0f5ff;
    color: var(--theme-muted, #4a6a9b);
    font-size: 14px;
    flex-direction: column;
    gap: 8px;
}

.sdpr-card-info { padding: 24px 32px; }
.sdpr-card-definition {
    font-size: 15px;
    color: var(--theme-ink, #0f1b35);
    line-height: 1.6;
    margin: 0 0 16px;
}
.sdpr-card-hint {
    background: #f0f5ff;
    border-left: 3px solid #1971c2;
    border-radius: 0 12px 12px 0;
    padding: 12px 16px;
    font-size: 13px;
    color: var(--theme-muted, #4a6a9b);
    line-height: 1.5;
    margin: 0;
}
.sdpr-card-hint-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #1971c2;
    margin-bottom: 4px;
}

/* ── Reveal button ───────────────────────────────────────────────────────── */
.sdpr-reveal-wrap {
    padding: 20px 24px 24px;
    text-align: center;
}
.sdpr-reveal-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    background: var(--theme-ink, #0f1b35);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: transform .15s, background .15s;
}
.sdpr-reveal-btn:hover { background: #1a2a5e; transform: scale(1.02); }

/* ── Rating buttons ─────────────────────────────────────────────────────── */
.sdpr-ratings {
    display: none;
    padding: 20px 24px 28px;
    border-top: 1px solid var(--theme-line, #cdd9f5);
    background: #f8faff;
    border-radius: 0 0 28px 28px;
}
.sdpr-ratings.is-visible { display: block; }
.sdpr-ratings-label {
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--theme-muted, #4a6a9b);
    text-transform: uppercase;
    letter-spacing: .07em;
    margin-bottom: 14px;
}
.sdpr-rating-btns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}
.sdpr-rating-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 14px 10px;
    border: 2px solid transparent;
    border-radius: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform .15s, box-shadow .15s;
    font-size: 13px;
    line-height: 1;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.sdpr-rating-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,.12); }
.sdpr-rating-btn .sdpr-btn-emoji { font-size: 22px; margin-bottom: 2px; }
.sdpr-rating-btn .sdpr-btn-interval { font-size: 9px; font-weight: 600; color: rgba(0,0,0,.4); text-transform: uppercase; letter-spacing: .05em; margin-top: 2px; }

.sdpr-rating-btn--again  { border-color: #fee2e2; color: #dc2626; }
.sdpr-rating-btn--again:hover  { border-color: #dc2626; background: #fff5f5; }
.sdpr-rating-btn--hard   { border-color: #ffedd5; color: #ea580c; }
.sdpr-rating-btn--hard:hover   { border-color: #ea580c; background: #fff7f0; }
.sdpr-rating-btn--good   { border-color: #d1fae5; color: #059669; }
.sdpr-rating-btn--good:hover   { border-color: #059669; background: #f0fdf8; }
.sdpr-rating-btn--easy   { border-color: #e0e7ff; color: #4f46e5; }
.sdpr-rating-btn--easy:hover   { border-color: #4f46e5; background: #f5f3ff; }

/* Free preview: blur rating buttons */
.sdpr-ratings.is-blurred { filter: blur(3px); pointer-events: none; user-select: none; }

/* ── Session complete ────────────────────────────────────────────────────── */
.sdpr-complete {
    display: none;
    text-align: center;
    padding: 48px 24px;
    animation: sdCardAppear .5s ease both;
}
.sdpr-complete.is-visible { display: block; }
.sdpr-complete-icon { font-size: 72px; display: block; margin-bottom: 16px; animation: sdIconBounce2 .8s .3s cubic-bezier(.34,1.6,.64,1) both; }
@keyframes sdIconBounce2 { from { transform: scale(0); } to { transform: scale(1); } }
.sdpr-complete-h2 { font-size: 32px; font-weight: 900; color: var(--theme-ink, #0f1b35); margin: 0 0 8px; }
.sdpr-complete-sub { font-size: 16px; color: var(--theme-muted, #4a6a9b); margin: 0 0 32px; }

.sdpr-complete-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}
.sdpr-complete-stat {
    background: #fff;
    border-radius: 20px;
    padding: 20px 16px;
    box-shadow: 0 4px 16px rgba(25,113,194,.1);
}
.sdpr-complete-stat-num {
    font-size: 32px;
    font-weight: 900;
    color: var(--theme-ink, #0f1b35);
    line-height: 1;
    margin-bottom: 4px;
}
.sdpr-complete-stat-num.is-xp { color: #b45309; }
.sdpr-complete-stat-label { font-size: 12px; color: var(--theme-muted, #4a6a9b); font-weight: 600; }

.sdpr-complete-achs {
    margin-bottom: 32px;
}
.sdpr-complete-achs-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--theme-muted, #4a6a9b);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: .07em;
}
.sdpr-complete-ach-row {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.sdpr-complete-ach-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #1c2f6b, #0f1b35);
    color: #fff;
    border-radius: 14px;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 700;
    border: 1px solid rgba(255,217,0,.3);
    animation: sdBadgeIn .5s cubic-bezier(.34,1.4,.64,1) both;
}
@keyframes sdBadgeIn { from { opacity:0; transform: scale(.6); } to { opacity:1; transform: scale(1); } }
.sdpr-complete-ach-badge-icon { font-size: 20px; }

.sdpr-complete-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.sdpr-complete-btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 16px 32px;
    background: linear-gradient(135deg, #1971c2, #1cb0f6);
    color: #fff; font-size: 15px; font-weight: 700;
    border: none; border-radius: 999px; cursor: pointer;
    box-shadow: 0 6px 24px rgba(25,113,194,.4);
    transition: transform .15s;
    text-decoration: none;
}
.sdpr-complete-btn-primary:hover { transform: translateY(-2px); color: #fff; text-decoration: none; }
.sdpr-complete-btn-outline {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 16px 28px;
    background: transparent; color: var(--theme-ink, #0f1b35);
    font-size: 15px; font-weight: 700;
    border: 2px solid var(--theme-line, #cdd9f5); border-radius: 999px;
    cursor: pointer; transition: border-color .15s;
    text-decoration: none;
}
.sdpr-complete-btn-outline:hover { border-color: #1971c2; color: #1971c2; text-decoration: none; }

/* ── Upgrade gate (free/guest) ───────────────────────────────────────────── */
.sdpr-upgrade-gate {
    background: linear-gradient(160deg, #1c2f6b 0%, #0f1b35 100%);
    border-radius: 28px;
    padding: 40px 32px;
    text-align: center;
    color: #fff;
    margin-top: 24px;
    border: 1px solid rgba(255,217,0,.2);
}
.sdpr-upgrade-gate-icon { font-size: 56px; display: block; margin-bottom: 12px; }
.sdpr-upgrade-gate-h2 { font-size: 24px; font-weight: 800; margin: 0 0 8px; }
.sdpr-upgrade-gate-sub { font-size: 15px; color: rgba(255,255,255,.65); margin: 0 0 24px; line-height: 1.6; }
.sdpr-upgrade-gate-features {
    list-style: none;
    padding: 0; margin: 0 0 28px;
    display: flex; flex-direction: column; gap: 8px;
    text-align: left;
    max-width: 340px;
    margin-left: auto; margin-right: auto;
}
.sdpr-upgrade-gate-features li {
    display: flex; align-items: center; gap: 10px;
    font-size: 14px; color: rgba(255,255,255,.8);
}
.sdpr-upgrade-gate-features li::before { content: '✓'; color: #1cb0f6; font-weight: 700; flex-shrink: 0; }
.sdpr-upgrade-gate-cta {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 16px 36px;
    background: linear-gradient(135deg, #ffd900, #ffb700);
    color: #0f1b35; font-size: 16px; font-weight: 800;
    border-radius: 999px; text-decoration: none;
    box-shadow: 0 6px 24px rgba(255,217,0,.35);
    transition: transform .15s;
}
.sdpr-upgrade-gate-cta:hover { transform: translateY(-2px); color: #0f1b35; text-decoration: none; }
.sdpr-upgrade-gate-skip {
    display: block; margin-top: 12px;
    font-size: 13px; color: rgba(255,255,255,.4);
    text-decoration: none;
}
.sdpr-upgrade-gate-skip:hover { color: rgba(255,255,255,.6); }

/* ── Empty state (no due cards) ─────────────────────────────────────────── */
.sdpr-empty {
    max-width: 560px;
    margin: 48px auto;
    padding: 0 24px;
    text-align: center;
}
.sdpr-empty-icon { font-size: 64px; display: block; margin-bottom: 16px; }
.sdpr-empty-h2 { font-size: 26px; font-weight: 800; color: var(--theme-ink,#0f1b35); margin: 0 0 8px; }
.sdpr-empty-p { font-size: 15px; color: var(--theme-muted,#4a6a9b); margin: 0 0 28px; line-height: 1.6; }

/* ══════════════════════════════════════════════════════════════════════════
   ACCOUNT HUB — Smart Practice view  (sdph-*)
   ══════════════════════════════════════════════════════════════════════════ */

.sdph-wrap {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ── Hero banner ── */
.sdph-hero {
    display: flex;
    align-items: center;
    gap: 20px;
    background: linear-gradient(135deg, #1c2f6b 0%, #0f1b35 100%);
    border-radius: 20px;
    padding: 28px 28px;
    border: 1px solid rgba(28,176,246,.2);
    flex-wrap: wrap;
}
.sdph-hero-icon {
    font-size: 48px;
    flex-shrink: 0;
    line-height: 1;
}
.sdph-hero-body {
    flex: 1;
    min-width: 200px;
}
.sdph-hero-title {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 6px;
}
.sdph-hero-sub {
    font-size: 14px;
    color: rgba(255,255,255,.65);
    margin: 0;
    line-height: 1.5;
}
.sdph-start-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    background: linear-gradient(135deg, #1971c2, #1cb0f6);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    border-radius: 999px;
    text-decoration: none;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(25,113,194,.4);
    transition: transform .15s, box-shadow .15s;
    white-space: nowrap;
}
.sdph-start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(25,113,194,.5);
    color: #fff;
    text-decoration: none;
}
.sdph-start-btn--free {
    background: linear-gradient(135deg, #2d8a4e, #34c463);
    box-shadow: 0 4px 16px rgba(45,138,78,.35);
}
.sdph-start-btn--free:hover {
    box-shadow: 0 8px 24px rgba(45,138,78,.5);
}

/* ── Stats row (paid only) ── */
.sdph-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.sdph-stat {
    background: var(--theme-bg, #f0f5ff);
    border: 1px solid var(--theme-line, #cdd9f5);
    border-radius: 14px;
    padding: 16px 12px;
    text-align: center;
    transition: border-color .15s;
}
.sdph-stat.is-due {
    background: linear-gradient(135deg, #fff3e0, #fff8f0);
    border-color: #f59e0b;
}
.sdph-stat-num {
    display: block;
    font-size: 28px;
    font-weight: 900;
    color: var(--theme-ink, #0f1b35);
    line-height: 1;
    margin-bottom: 4px;
}
.sdph-stat.is-due .sdph-stat-num {
    color: #d97706;
}
.sdph-stat-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--theme-muted, #4a6a9b);
}

/* ── How it works ── */
.sdph-how {
    background: var(--theme-bg, #f0f5ff);
    border: 1px solid var(--theme-line, #cdd9f5);
    border-radius: 16px;
    padding: 24px;
}
.sdph-how-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--theme-muted, #4a6a9b);
    margin: 0 0 16px;
}
.sdph-how-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.sdph-how-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.sdph-how-step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #1971c2;
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 2px;
}
.sdph-how-step-icon {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 1px;
}
.sdph-how-step-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.sdph-how-step-body strong {
    font-size: 14px;
    font-weight: 700;
    color: var(--theme-ink, #0f1b35);
}
.sdph-how-step-body span {
    font-size: 13px;
    color: var(--theme-muted, #4a6a9b);
    line-height: 1.4;
}

/* ── Upgrade gate (free / guest) ── */
.sdph-gate {
    background: linear-gradient(135deg, #fff9e6, #fffdf5);
    border: 1px solid rgba(255,217,0,.4);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
}
.sdph-gate-label {
    font-size: 15px;
    font-weight: 700;
    color: var(--theme-ink, #0f1b35);
    margin: 0 0 8px;
}
.sdph-gate-sub {
    font-size: 13px;
    color: var(--theme-muted, #4a6a9b);
    margin: 0 0 20px;
    line-height: 1.5;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}
.sdph-gate-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #ffd900, #ffb700);
    color: #0f1b35;
    font-size: 14px;
    font-weight: 800;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(255,217,0,.35);
    transition: transform .15s;
}
.sdph-gate-cta:hover {
    transform: translateY(-2px);
    color: #0f1b35;
    text-decoration: none;
}
.sdph-gate-link {
    display: block;
    margin-top: 12px;
    font-size: 13px;
    color: var(--theme-muted, #4a6a9b);
    text-decoration: none;
}
.sdph-gate-link:hover { color: #1971c2; }

/* ── Dictionary link ── */
.sdph-dict-link {
    text-align: center;
    font-size: 13px;
    color: var(--theme-muted, #4a6a9b);
    margin: 0;
}
.sdph-dict-link a {
    color: #1971c2;
    text-decoration: none;
    font-weight: 600;
}
.sdph-dict-link a:hover { text-decoration: underline; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .sdpr-hero { padding: 40px 16px 64px; }
    .sdpr-session { padding: 24px 16px; }
    .sdpr-card-front { padding: 32px 20px; }
    .sdpr-card-info { padding: 20px; }
    .sdpr-ratings { padding: 16px 16px 20px; }
    .sdpr-rating-btns { grid-template-columns: repeat(2, 1fr); }
    .sdpr-complete { padding: 32px 16px; }
    .sdpr-hero-stats { gap: 8px; }
    .sdpr-hero-stat { padding: 12px 14px; }
    .sdpr-hero-stat-num { font-size: 22px; }

    .sdph-hero { flex-direction: column; align-items: flex-start; gap: 16px; padding: 20px; }
    .sdph-stats { grid-template-columns: repeat(2, 1fr); }
    .sdph-start-btn { width: 100%; justify-content: center; }
}