/* ========== CSS Variables ========== */
:root {
    --primary: #0071e3;
    --primary-dark: #0066cc;
    --primary-glow: rgba(0, 113, 227, 0.25);
    --primary-light: rgba(0, 113, 227, 0.08);
    --success: #30d158;
    --success-light: rgba(48, 209, 88, 0.1);
    --warning: #ff9f0a;
    --warning-light: rgba(255, 159, 10, 0.1);
    --danger: #ff453a;
    --danger-light: rgba(255, 69, 58, 0.1);
    --gray-50: #f5f5f7;
    --gray-100: #e8e8ed;
    --gray-200: #d2d2d7;
    --gray-300: #aeaeb2;
    --gray-400: #8e8e93;
    --gray-500: #636366;
    --gray-600: #48484a;
    --gray-700: #363639;
    --gray-800: #1d1d1f;
    --gray-900: #000000;

    /* Apple Glass tokens */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-strong: rgba(255, 255, 255, 0.82);
    --glass-bg-light: rgba(255, 255, 255, 0.55);
    --glass-bg-input: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-border-subtle: rgba(0, 0, 0, 0.04);
    --glass-filter: saturate(180%) blur(30px);
    --glass-filter-sm: saturate(180%) blur(12px);
    --glass-filter-xs: saturate(150%) blur(6px);
    --glass-shadow: 0 0 0 0.5px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.04), 0 8px 32px rgba(0,0,0,0.04);
    --glass-shadow-hover: 0 0 0 0.5px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06), 0 16px 48px rgba(0,0,0,0.06);
    --glass-shadow-card: 0 0 0 0.5px rgba(0,0,0,0.03), 0 2px 8px rgba(0,0,0,0.03), 0 4px 16px rgba(0,0,0,0.03);

    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
                 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    color: var(--gray-800);
    line-height: 1.5;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    /* macOS Ventura style wallpaper gradient */
    background: linear-gradient(160deg,
        #b4c6e7 0%, #c9d8f0 8%, #e8d5e8 18%,
        #f0d8e0 28%, #f5e0d0 38%, #e8e0c8 48%,
        #d8e8d0 58%, #c8dde8 68%, #d0c8e8 78%,
        #e0c8d8 88%, #c0d0e8 100%
    );
    background-size: 400% 400%;
    animation: gradientShift 30s ease infinite;
}

/* Decorative floating orbs */
body::before {
    content: '';
    position: fixed;
    top: -15%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    max-width: 700px;
    max-height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 113, 227, 0.1) 0%, rgba(94, 92, 230, 0.05) 30%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: orbFloat1 20s ease-in-out infinite;
}

body::after {
    content: '';
    position: fixed;
    bottom: -10%;
    left: -10%;
    width: 45vw;
    height: 45vw;
    max-width: 600px;
    max-height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 55, 95, 0.08) 0%, rgba(191, 90, 242, 0.04) 40%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: orbFloat2 24s ease-in-out infinite;
}

.bg-orb-3 {
    position: fixed;
    top: 45%;
    left: 55%;
    width: 35vw;
    height: 35vw;
    max-width: 500px;
    max-height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(48, 209, 88, 0.06) 0%, rgba(0, 199, 190, 0.03) 40%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: orbFloat3 22s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    25% { background-position: 50% 0%; }
    50% { background-position: 100% 50%; }
    75% { background-position: 50% 100%; }
}

@keyframes orbFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-4vw, 3vw) scale(1.08); }
    66% { transform: translate(2vw, -2vw) scale(0.94); }
}

@keyframes orbFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(3vw, -3vw) scale(1.1); }
    66% { transform: translate(-2vw, 2vw) scale(0.92); }
}

@keyframes orbFloat3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-3vw, 3vw) scale(1.06); }
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--primary-dark); }

/* ========== Navbar (Apple Glass) ========== */
.navbar {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-filter);
    -webkit-backdrop-filter: var(--glass-filter);
    border-bottom: 0.5px solid var(--glass-border);
    box-shadow: 0 1px 0 rgba(0,0,0,0.02);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.nav-brand {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
}

.nav-link {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: all var(--transition);
    letter-spacing: -0.01em;
}
.nav-link:hover {
    background: rgba(0, 0, 0, 0.04);
    color: var(--gray-800);
}

.nav-user {
    padding: 4px 10px;
    font-size: 0.85rem;
    color: var(--gray-700);
    font-weight: 500;
    letter-spacing: -0.01em;
}

.nav-logout {
    color: var(--gray-400) !important;
}
.nav-logout:hover {
    color: var(--danger) !important;
    background: rgba(255, 69, 58, 0.06);
}

.nav-admin {
    background: rgba(0, 113, 227, 0.08);
    color: var(--primary) !important;
    font-weight: 600;
}
.nav-admin:hover {
    background: var(--primary);
    color: white !important;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.admin-tag {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    background: linear-gradient(135deg, #0071e3, #5e5ce6);
    color: white;
    font-size: 0.65rem;
    font-weight: 600;
    margin-left: 5px;
    vertical-align: middle;
    letter-spacing: 0.02em;
}

.you-tag {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    background: rgba(0, 113, 227, 0.1);
    color: var(--primary);
    font-size: 0.65rem;
    font-weight: 600;
    margin-left: 5px;
}

.user-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.04);
    color: var(--gray-500);
    font-size: 0.7rem;
    font-weight: 600;
}

/* ========== Main Container ========== */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 36px 28px 80px;
    position: relative;
    z-index: 1;
}

/* ========== Auth Pages (Apple Style) ========== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg,
        #e8edf5 0%, #dce3f0 15%, #d6ddea 28%,
        #ded9e8 42%, #e3d8e6 55%, #dbd9e8 68%,
        #dce3f0 80%, #e8edf5 100%
    );
    background-size: 300% 300%;
    animation: authGradientShift 20s ease infinite;
}

@keyframes authGradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Decorative blobs behind auth card */
.auth-container::before {
    content: '';
    position: absolute;
    top: -10%;
    left: -10%;
    width: 55vw;
    height: 55vw;
    max-width: 700px;
    max-height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,113,227,0.08) 0%, rgba(100,130,220,0.04) 40%, transparent 70%);
    animation: orbFloat1 16s ease-in-out infinite;
    pointer-events: none;
}

.auth-container::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    max-width: 600px;
    max-height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(180,140,210,0.08) 0%, rgba(160,120,200,0.04) 40%, transparent 70%);
    animation: orbFloat2 18s ease-in-out infinite;
    pointer-events: none;
}

/* Apple-style glass card */
.auth-card {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: saturate(180%) blur(40px);
    -webkit-backdrop-filter: saturate(180%) blur(40px);
    border-radius: var(--radius-xl);
    padding: 52px 44px;
    width: 100%;
    max-width: 420px;
    box-shadow:
        0 0 0 0.5px rgba(255,255,255,0.7),
        0 2px 12px rgba(0,0,0,0.04),
        0 8px 32px rgba(0,0,0,0.06),
        0 20px 64px rgba(0,0,0,0.06);
    position: relative;
    z-index: 2;
}

.auth-header {
    text-align: center;
    margin-bottom: 36px;
}
.auth-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gray-800);
    margin-bottom: 6px;
    white-space: nowrap;
}
.auth-header p {
    color: var(--gray-400);
    font-size: 0.95rem;
    font-weight: 400;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.auth-footer {
    text-align: center;
    margin-top: 28px;
    font-size: 0.9rem;
    color: var(--gray-400);
}
.auth-footer a {
    color: var(--primary);
    font-weight: 600;
}
.auth-footer a:hover {
    color: var(--primary-dark);
}

/* Auth form elements */
.auth-form .form-group label {
    color: var(--gray-500);
    font-weight: 500;
    font-size: 0.8rem;
    letter-spacing: 0.01em;
}

.auth-form .form-group input {
    background: rgba(0, 0, 0, 0.04);
    border: 0.5px solid rgba(0, 0, 0, 0.08);
    color: var(--gray-800);
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}
.auth-form .form-group input::placeholder {
    color: var(--gray-300);
}
.auth-form .form-group input:focus {
    background: rgba(0, 0, 0, 0.02);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
    color: var(--gray-800);
}

/* Auth alerts */
.auth-card .alert-error {
    background: rgba(255, 69, 58, 0.08);
    border: 0.5px solid rgba(255, 69, 58, 0.2);
    color: var(--danger);
    backdrop-filter: none;
}
.auth-card .alert-success {
    background: rgba(48, 209, 88, 0.08);
    border: 0.5px solid rgba(48, 209, 88, 0.2);
    color: #248a3d;
    backdrop-filter: none;
}

/* Auth buttons */
.auth-form .btn-primary {
    background: var(--primary);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-sm);
    padding: 14px;
    box-shadow: 0 2px 8px var(--primary-glow), 0 4px 16px rgba(0,113,227,0.15);
}
.auth-form .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--primary-glow), 0 8px 24px rgba(0,113,227,0.2);
}

/* ========== Form Elements (Apple Glass) ========== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--gray-700);
    letter-spacing: -0.01em;
}

.form-group input {
    padding: 12px 16px;
    border: 0.5px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--gray-800);
    background: var(--glass-bg-input);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    transition: all var(--transition);
    outline: none;
    width: 100%;
}
.form-group input:focus {
    border-color: var(--primary);
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 4px rgba(0,113,227,0.08);
}
.form-group input::placeholder {
    color: var(--gray-300);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 22px;
    border: none;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,113,227,0.25);
}

.btn-outline {
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    color: var(--gray-700);
    border: 0.5px solid rgba(0,0,0,0.06);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0,113,227,0.06);
    box-shadow: 0 2px 8px rgba(0,113,227,0.08);
    transform: translateY(-1px);
}

.btn-outline.disabled {
    opacity: 0.3;
    pointer-events: none;
}

.btn-full {
    width: 100%;
    padding: 13px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
}

/* ========== Alerts ========== */
.alert {
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 18px;
}

.alert-error {
    background: var(--danger-light);
    color: var(--danger);
    border: 0.5px solid rgba(255, 69, 58, 0.2);
}

.alert-success {
    background: var(--success-light);
    color: #248a3d;
    border: 0.5px solid rgba(48, 209, 88, 0.2);
}

/* ========== Page Header ========== */
.page-header {
    margin-bottom: 32px;
}
.page-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--gray-800);
    margin-bottom: 4px;
}
.page-header p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

.back-link {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-bottom: 14px;
    transition: color var(--transition);
    letter-spacing: -0.01em;
}
.back-link:hover {
    color: var(--primary);
}

/* ========== Category Grid ========== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 18px;
    margin-bottom: 40px;
}

.category-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-filter-sm);
    -webkit-backdrop-filter: var(--glass-filter-sm);
    border-radius: var(--radius-lg);
    padding: 30px;
    display: flex;
    gap: 20px;
    align-items: center;
    transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    border: 0.5px solid var(--glass-border);
    box-shadow: var(--glass-shadow-card);
    cursor: pointer;
}
.category-card:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: var(--glass-shadow-hover);
    border-color: rgba(0, 113, 227, 0.3);
    background: var(--glass-bg-strong);
}

.card-icon {
    font-size: 2.4rem;
    flex-shrink: 0;
}

.card-content {
    flex: 1;
    min-width: 0;
}
.card-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    margin-bottom: 12px;
}

/* ========== Progress ========== */
.progress-bar-container {
    height: 6px;
    background: rgba(0, 0, 0, 0.04);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}
.progress-bar-container.large {
    height: 10px;
    border-radius: 5px;
    max-width: 400px;
    width: 100%;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: inherit;
    transition: width 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
    min-width: 0;
}

.card-stat {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--gray-500);
}
.card-pct {
    font-weight: 600;
    color: var(--primary);
}

/* ========== Overview Stats ========== */
.overview-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.stat-item {
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    border: 0.5px solid var(--glass-border);
    box-shadow: var(--glass-shadow-card);
    transition: all var(--transition);
}
.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--glass-shadow-hover);
    background: var(--glass-bg);
}
.stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--primary);
    margin-bottom: 2px;
}
.stat-label {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 500;
    letter-spacing: -0.01em;
}

/* ========== Category Progress ========== */
.category-progress {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 16px;
    flex-wrap: wrap;
}
.progress-text {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
    letter-spacing: -0.01em;
}

/* ========== Question List ========== */
.question-list {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.question-item-row {
    display: flex;
    align-items: center;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    border: 0.5px solid rgba(255,255,255,0.4);
    overflow: hidden;
}
.question-item-row:hover {
    border-color: rgba(0,113,227,0.3);
    box-shadow: 0 2px 12px rgba(0,113,227,0.06);
    background: var(--glass-bg);
}
.question-item-row.answered {
    background: rgba(48, 209, 88, 0.08);
    border-color: rgba(48, 209, 88, 0.25);
}

.question-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
    flex: 1;
    color: var(--gray-700);
    text-decoration: none;
    min-width: 0;
}

.q-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0,0,0,0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gray-500);
    flex-shrink: 0;
    transition: all var(--transition);
}
.question-item-row.answered .q-number {
    background: var(--success);
    color: white;
}

.q-title {
    flex: 1;
    font-size: 0.9rem;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.q-status {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-left: auto;
}

/* ========== Round Checkboxes ========== */
.round-checks {
    display: flex;
    gap: 2px;
    padding: 8px 14px;
    background: rgba(0,0,0,0.02);
    border-left: 0.5px solid rgba(0,0,0,0.04);
    align-items: center;
    flex-shrink: 0;
}
.round-checks.inline {
    background: transparent;
    border-left: none;
    padding: 0;
}

.round-check-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    transition: all var(--transition);
    user-select: none;
}
.round-check-label:hover {
    background: rgba(0,113,227,0.06);
}

.round-check-label.pulse {
    animation: pulseScale 0.6s ease;
}

.round-checkbox {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.round-check-label span {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 600;
    background: rgba(0,0,0,0.05);
    color: var(--gray-400);
    transition: all var(--transition);
}
.round-checkbox:checked + span {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 6px var(--primary-glow);
}

/* ========== Round Mini Bars ========== */
.round-bar-row {
    display: flex;
    gap: 14px;
    margin-top: 10px;
    flex-wrap: wrap;
}
.round-mini-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
}
.round-mini-label {
    font-weight: 500;
    color: var(--gray-600);
    white-space: nowrap;
}
.round-mini-num {
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
}
.progress-bar-container.small {
    height: 5px;
    width: 70px;
    border-radius: 2.5px;
}

/* ========== Round Section & Tabs ========== */
.round-section {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding: 10px 14px;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius-sm);
    flex-wrap: wrap;
    border: 0.5px solid rgba(255,255,255,0.4);
}
.round-section-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gray-700);
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.round-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.round-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 15px;
    border: 0.5px solid rgba(0,0,0,0.08);
    border-radius: 20px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    color: var(--gray-600);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    outline: none;
    white-space: nowrap;
    font-family: inherit;
    letter-spacing: -0.01em;
}
.round-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0,113,227,0.06);
    transform: translateY(-1px);
}
.round-tab.active {
    border-color: transparent;
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 10px var(--primary-glow);
}
.round-tab.active:hover {
    background: var(--primary-dark);
    color: white;
}
.round-tab-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gray-300);
    flex-shrink: 0;
    transition: all 0.25s ease;
}
.round-tab-dot.done { background: var(--success); }
.round-tab.active .round-tab-dot { background: rgba(255,255,255,0.5); }
.round-tab.active .round-tab-dot.done { background: #6ee7b7; }
.round-tab-check {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--success);
    margin-left: -2px;
}
.round-tab.active .round-tab-check { color: #a7f0ba; }

/* ========== Answer Page ========== */
.answer-page {
    max-width: 900px;
    margin: 0 auto;
}

.answer-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.nav-buttons {
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav-info {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: 0 6px;
    letter-spacing: -0.01em;
}

.answer-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-filter-sm);
    -webkit-backdrop-filter: var(--glass-filter-sm);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--glass-shadow);
    border: 0.5px solid var(--glass-border);
    margin-bottom: 24px;
    transition: all var(--transition);
}

.answer-question-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.q-badge {
    padding: 3px 12px;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.badge-教育学 { background: rgba(0,113,227,0.08); color: var(--primary); }
.badge-教育法律法规 { background: rgba(255,159,10,0.08); color: #b06d00; }
.badge-心理学 { background: rgba(94,92,230,0.08); color: #5e5ce6; }

.q-label {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-weight: 500;
}

.question-title-full {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    line-height: 1.55;
    margin-bottom: 20px;
}

.mnemonic-box {
    background: rgba(255,159,10,0.06);
    border: 0.5px solid rgba(255,159,10,0.15);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 24px;
}
.mnemonic-label {
    font-weight: 600;
    color: var(--warning);
    font-size: 0.85rem;
}
.mnemonic-text {
    color: var(--gray-700);
    font-size: 0.85rem;
    margin-left: 4px;
}

/* ========== Answer Section ========== */
.answer-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
}
.answer-section h3 {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    margin-bottom: 0;
}

.answer-textarea {
    width: 100%;
    min-height: 260px;
    padding: 16px;
    border: 0.5px solid rgba(0,0,0,0.06);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--gray-800);
    resize: vertical;
    font-family: inherit;
    transition: all var(--transition);
    outline: none;
    background: var(--glass-bg-input);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
}
.answer-textarea:focus {
    border-color: var(--primary);
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 4px rgba(0,113,227,0.06);
}
.answer-textarea::placeholder { color: var(--gray-300); }

.answer-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 14px;
    flex-wrap: wrap;
    gap: 10px;
}
.answer-status { font-size: 0.8rem; }
.saved-time { color: var(--success); font-weight: 500; }
.saving { color: var(--warning); font-weight: 500; }
.save-error { color: var(--danger); font-weight: 500; }
.quick-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ========== Section ========== */
.section { margin-bottom: 40px; }
.section h2 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    margin-bottom: 16px;
}

/* ========== Search ========== */
.search-box {
    position: relative;
    margin-bottom: 32px;
}
.search-input {
    width: 100%;
    padding: 14px 18px;
    border: 0.5px solid rgba(0,0,0,0.05);
    border-radius: var(--radius);
    font-size: 0.95rem;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    transition: all var(--transition);
    outline: none;
    box-shadow: var(--glass-shadow-card);
}
.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0,113,227,0.06), var(--glass-shadow);
    background: var(--glass-bg-strong);
}
.search-input::placeholder { color: var(--gray-300); }

.search-results {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.9);
    backdrop-filter: saturate(200%) blur(30px);
    -webkit-backdrop-filter: saturate(200%) blur(30px);
    border: 0.5px solid rgba(255,255,255,0.5);
    border-radius: var(--radius);
    box-shadow: 0 8px 40px rgba(0,0,0,0.1);
    max-height: 380px;
    overflow-y: auto;
    z-index: 50;
    margin-top: 6px;
}
.search-results.show { display: block; }
.search-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 0.5px solid rgba(0,0,0,0.03);
    transition: background var(--transition);
    color: var(--gray-700);
    font-size: 0.85rem;
}
.search-item:last-child { border-bottom: none; }
.search-item:hover {
    background: rgba(0,113,227,0.04);
    color: var(--primary);
}
.search-badge {
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    flex-shrink: 0;
}
.search-done { color: var(--success); font-weight: 600; margin-left: auto; }
.search-empty { padding: 20px; text-align: center; color: var(--gray-300); }

/* ========== Recent List ========== */
.recent-list {
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow-card);
    border: 0.5px solid var(--glass-border);
    overflow: hidden;
}
.recent-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-bottom: 0.5px solid rgba(0,0,0,0.03);
    font-size: 0.85rem;
    transition: background var(--transition);
}
.recent-item:last-child { border-bottom: none; }
.recent-item:hover { background: rgba(0,0,0,0.015); }
.recent-badge {
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    flex-shrink: 0;
}
.recent-title {
    flex: 1;
    color: var(--gray-700);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -0.01em;
}
.recent-time {
    color: var(--gray-300);
    font-size: 0.75rem;
    flex-shrink: 0;
}
.recent-round {
    font-size: 0.7rem;
    color: var(--primary);
    font-weight: 600;
    flex-shrink: 0;
    padding: 2px 7px;
    background: rgba(0,113,227,0.06);
    border-radius: 8px;
}

/* ========== Settings ========== */
.settings-container {
    max-width: 700px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.settings-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-filter-sm);
    -webkit-backdrop-filter: var(--glass-filter-sm);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    border: 0.5px solid var(--glass-border);
    overflow: hidden;
    transition: all var(--transition);
}
.settings-header {
    padding: 22px 26px 14px;
    border-bottom: 0.5px solid rgba(0,0,0,0.04);
}
.settings-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    margin-bottom: 2px;
}
.settings-header p { font-size: 0.8rem; color: var(--gray-500); }
.settings-body { padding: 22px 26px; }

.round-slider-group { margin-bottom: 18px; }
.round-slider-group > label {
    font-size: 0.9rem;
    color: var(--gray-700);
    display: block;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}
.round-slider-group strong {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 700;
}

.round-control {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.round-slider {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: rgba(0,0,0,0.06);
    outline: none;
    cursor: pointer;
}
.round-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 6px var(--primary-glow);
}

.round-presets {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.preset-label { font-size: 0.8rem; color: var(--gray-500); margin-right: 2px; }

.btn-sm { padding: 5px 12px; font-size: 0.8rem; border-radius: 8px; }
.btn-xs { padding: 3px 9px; font-size: 0.75rem; border-radius: 7px; }
.btn-danger { color: var(--danger) !important; border-color: rgba(255,69,58,0.25) !important; }
.btn-danger:hover {
    background: rgba(255,69,58,0.05) !important;
    color: var(--danger) !important;
    border-color: rgba(255,69,58,0.4) !important;
}

.settings-msg {
    display: inline-block;
    margin-left: 14px;
    font-size: 0.8rem;
    font-weight: 500;
}
.settings-msg.success { color: var(--success); }
.settings-msg.error { color: var(--danger); }
.settings-msg.saving { color: var(--warning); }

.settings-input {
    padding: 11px 14px;
    border: 0.5px solid rgba(0,0,0,0.06);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--gray-800);
    background: var(--glass-bg-input);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    transition: all var(--transition);
    outline: none;
    width: 100%;
}
.settings-input:focus {
    border-color: var(--primary);
    background: var(--glass-bg-strong);
    box-shadow: 0 0 0 4px rgba(0,113,227,0.06);
}
.settings-input::placeholder { color: var(--gray-300); }

.settings-body .form-group { margin-bottom: 14px; }
.settings-form-actions {
    display: flex;
    align-items: center;
    margin-top: 10px;
}
.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 0;
    border-bottom: 0.5px solid rgba(0,0,0,0.03);
}
.info-row:last-child { border-bottom: none; }
.info-label { font-weight: 500; color: var(--gray-600); font-size: 0.85rem; }
.info-value { color: var(--gray-800); font-size: 0.85rem; }

/* ========== Admin ========== */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 32px;
}
.admin-table-wrapper {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    border: 0.5px solid var(--glass-border);
    overflow: hidden;
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.admin-table th {
    text-align: left;
    padding: 12px 16px;
    background: rgba(0,0,0,0.02);
    font-weight: 600;
    color: var(--gray-600);
    border-bottom: 0.5px solid rgba(0,0,0,0.06);
    white-space: nowrap;
    letter-spacing: -0.01em;
}
.admin-table td {
    padding: 12px 16px;
    border-bottom: 0.5px solid rgba(0,0,0,0.03);
    color: var(--gray-700);
}
.admin-table tr:hover td { background: rgba(0,113,227,0.02); }
.action-cell { display: flex; gap: 5px; flex-wrap: wrap; }
.text-muted { color: var(--gray-300); font-size: 0.75rem; }

.user-detail-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: all var(--transition);
}
.user-detail-link:hover { color: var(--primary-dark); }

/* ========== Admin User Detail ========== */
.admin-stats-5 { grid-template-columns: repeat(5, 1fr); }
.cat-stats-grid { display: flex; flex-direction: column; gap: 8px; }

.cat-stat-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius-sm);
    border: 0.5px solid var(--glass-border);
    transition: all var(--transition);
    color: inherit;
    text-decoration: none;
}
.cat-stat-card:hover {
    border-color: rgba(0,113,227,0.3);
    box-shadow: 0 2px 12px rgba(0,113,227,0.06);
    transform: translateY(-1px);
    background: var(--glass-bg);
}
.cat-stat-icon { font-size: 1.4rem; flex-shrink: 0; }
.cat-stat-info { flex: 1; display: flex; flex-direction: column; gap: 1px; }
.cat-stat-info strong { font-size: 0.85rem; color: var(--gray-800); letter-spacing: -0.01em; }
.cat-stat-info span { font-size: 0.75rem; color: var(--gray-500); }
.section-count { font-size: 0.75rem; font-weight: 400; color: var(--gray-300); margin-left: 10px; }

.detail-card {
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-filter-xs);
    -webkit-backdrop-filter: var(--glass-filter-xs);
    border-radius: var(--radius-sm);
    border: 0.5px solid var(--glass-border);
    margin-bottom: 8px;
    overflow: hidden;
    transition: all var(--transition);
}
.detail-card:hover { background: var(--glass-bg); }
.detail-card.has-answer { border-left: 3px solid var(--success); }

.detail-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    min-width: 0;
}
.detail-title {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    min-width: 0;
}
.detail-round-info { display: flex; gap: 3px; flex-shrink: 0; }
.detail-round-dot {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 600;
    background: rgba(0,0,0,0.05);
    color: var(--gray-400);
    transition: all 0.25s ease;
}
.detail-round-dot.done {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 4px var(--primary-glow);
}

.detail-answers { border-top: 0.5px solid rgba(0,0,0,0.03); padding: 0; }
.detail-answer-round {
    padding: 12px 16px;
    border-bottom: 0.5px solid rgba(0,0,0,0.02);
}
.detail-answer-round:last-child { border-bottom: none; }
.detail-answer-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}
.round-label {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    background: rgba(0,113,227,0.06);
    color: var(--primary);
    font-size: 0.7rem;
    font-weight: 600;
}
.round-done-tag {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    background: rgba(48,209,88,0.08);
    color: var(--success);
    font-size: 0.65rem;
    font-weight: 500;
}
.detail-answer-time { font-size: 0.7rem; color: var(--gray-300); }
.detail-answer-text {
    font-size: 0.8rem;
    line-height: 1.65;
    color: var(--gray-700);
    white-space: pre-wrap;
    padding: 10px 12px;
    background: rgba(0,0,0,0.015);
    border-radius: var(--radius-sm);
    max-height: 260px;
    overflow-y: auto;
}
.detail-empty {
    padding: 14px 16px;
    font-size: 0.8rem;
    color: var(--gray-300);
    border-top: 0.5px solid rgba(0,0,0,0.03);
}

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    animation: fadeInOverlay 0.2s ease;
}
.modal-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(200%) blur(40px);
    -webkit-backdrop-filter: saturate(200%) blur(40px);
    border-radius: var(--radius-lg);
    padding: 30px;
    width: 90%;
    max-width: 400px;
    box-shadow:
        0 0 0 0.5px rgba(255,255,255,0.4),
        0 10px 40px rgba(0,0,0,0.12),
        0 20px 60px rgba(0,0,0,0.06);
    border: 0.5px solid var(--glass-border);
}
.modal-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--gray-800);
    margin-bottom: 18px;
}
.modal-actions { display: flex; gap: 10px; margin-top: 18px; }

/* ========== Card Stat Row ========== */
.card-stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-bottom: 3px;
}

/* ========== Animations ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulseScale {
    0% { transform: scale(1); }
    50% { transform: scale(1.35); }
    100% { transform: scale(1); }
}
@keyframes fadeInOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

.category-card, .stat-item, .question-item-row, .answer-card, .settings-card {
    animation: fadeIn 0.5s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}
.category-card:nth-child(1) { animation-delay: 0.04s; }
.category-card:nth-child(2) { animation-delay: 0.08s; }
.category-card:nth-child(3) { animation-delay: 0.12s; }
.stat-item:nth-child(1) { animation-delay: 0s; }
.stat-item:nth-child(2) { animation-delay: 0.04s; }
.stat-item:nth-child(3) { animation-delay: 0.08s; }
.stat-item:nth-child(4) { animation-delay: 0.12s; }
.stat-item:nth-child(5) { animation-delay: 0.16s; }

/* ========== Responsive ========== */
/* Tablet & below */
@media (max-width: 768px) {
    html { font-size: 15px; }

    /* Hide decorative orbs on mobile */
    body::before, body::after, .bg-orb-3 { display: none; }
    .auth-container::before, .auth-container::after { display: none; }

    /* ===== Navbar ===== */
    .navbar { position: sticky; top: 0; }
    .nav-container {
        padding: 0 14px;
        height: 48px;
    }
    .nav-brand {
        font-size: 1rem;
        gap: 4px;
    }
    /* Hide desktop links, show hamburger */
    .nav-links {
        position: fixed;
        top: 48px;
        right: 0;
        width: 220px;
        max-height: 0;
        overflow: hidden;
        flex-direction: column;
        align-items: stretch;
        background: var(--glass-bg-strong);
        backdrop-filter: var(--glass-filter);
        -webkit-backdrop-filter: var(--glass-filter);
        border-radius: 0 0 var(--radius) var(--radius);
        box-shadow: var(--glass-shadow-hover);
        transition: max-height 0.35s ease, padding 0.35s ease;
        padding: 0 8px;
        gap: 2px;
        z-index: 99;
        border: 0.5px solid var(--glass-border);
        border-top: none;
    }
    .nav-links.open {
        max-height: 420px;
        padding: 8px;
    }
    .nav-link {
        padding: 10px 14px;
        font-size: 0.85rem;
        border-radius: 8px;
    }
    .nav-user {
        padding: 10px 14px;
        font-size: 0.85rem;
    }
    /* Hamburger button */
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 8px;
        border: none;
        background: rgba(0,0,0,0.04);
        cursor: pointer;
        flex-direction: column;
        gap: 4px;
        padding: 8px 7px;
        transition: background var(--transition);
    }
    .nav-toggle:hover { background: rgba(0,0,0,0.08); }
    .nav-toggle span {
        display: block;
        width: 100%;
        height: 2px;
        background: var(--gray-600);
        border-radius: 1px;
        transition: all 0.3s ease;
    }
    .nav-toggle.open span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.open span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    /* ===== Main ===== */
    .main-container { padding: 20px 14px 50px; }

    .page-header h1 { font-size: 1.4rem; }
    .page-header p { font-size: 0.85rem; }

    /* ===== Auth ===== */
    .auth-container { padding: 20px 14px; }
    .auth-card { padding: 36px 24px; max-width: 100%; border-radius: 24px; }
    .auth-header h1 { font-size: 1.5rem; }
    .auth-header p { font-size: 0.85rem; }

    /* ===== Grids ===== */
    .category-grid { grid-template-columns: 1fr; gap: 12px; }
    .category-card { padding: 22px 18px; gap: 14px; border-radius: var(--radius); }
    .card-icon { font-size: 2rem; }
    .card-content h3 { font-size: 1rem; margin-bottom: 10px; }

    .overview-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stat-item { padding: 18px 14px; border-radius: var(--radius-sm); }
    .stat-number { font-size: 1.7rem; }
    .stat-label { font-size: 0.75rem; }

    .admin-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .admin-stats-5 { grid-template-columns: repeat(3, 1fr); }

    /* ===== Question List ===== */
    .question-list { gap: 4px; }
    .question-item-row { flex-direction: column; align-items: stretch; border-radius: var(--radius-sm); }
    .question-link { padding: 12px 14px; gap: 10px; }
    .q-number { width: 30px; height: 30px; font-size: 0.78rem; }
    .q-title { font-size: 0.85rem; }
    .round-checks {
        border-left: none;
        border-top: 0.5px solid rgba(0,0,0,0.04);
        justify-content: flex-start;
        padding: 8px 14px;
        gap: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .round-check-label { width: 32px; height: 32px; }
    .round-check-label span { width: 24px; height: 24px; font-size: 0.7rem; }

    /* ===== Answer Page ===== */
    .answer-card { padding: 24px 18px; border-radius: var(--radius); }
    .answer-nav { flex-direction: column; align-items: stretch; gap: 10px; }
    .nav-buttons { justify-content: space-between; width: 100%; }
    .nav-info { font-size: 0.8rem; }
    .question-title-full { font-size: 1.1rem; }
    .answer-textarea { min-height: 200px; font-size: 16px; /* prevent iOS zoom */ }
    .round-section { flex-direction: column; align-items: stretch; gap: 10px; padding: 10px 12px; }
    .round-section-label { font-size: 0.8rem; }
    .round-tabs { width: 100%; gap: 4px; }
    .round-tab { padding: 6px 12px; font-size: 0.78rem; }
    .round-tab-dot { width: 6px; height: 6px; }
    .mnemonic-box { padding: 10px 12px; }
    .mnemonic-label, .mnemonic-text { font-size: 0.8rem; }
    .quick-actions { flex-direction: column; }
    .quick-actions .btn { width: 100%; text-align: center; }
    .answer-actions { flex-direction: column; }
    .answer-actions .btn { width: 100%; }

    /* ===== Round Mini Bars ===== */
    .round-bar-row { flex-direction: column; gap: 8px; }
    .round-mini-bar { width: 100%; }
    .progress-bar-container.small { flex: 1; width: auto; }

    /* ===== Category Progress ===== */
    .category-progress { flex-direction: column; align-items: stretch; gap: 8px; }
    .progress-bar-container.large { max-width: 100%; }

    /* ===== Search ===== */
    .search-box { margin-bottom: 20px; }
    .search-input { padding: 12px 14px; font-size: 16px; }
    .search-results { max-height: 280px; border-radius: var(--radius-sm); }
    .search-item { padding: 11px 14px; font-size: 0.82rem; }

    /* ===== Recent List ===== */
    .recent-item { flex-wrap: wrap; padding: 10px 14px; gap: 8px; }
    .recent-title { white-space: normal; font-size: 0.82rem; }
    .recent-time { font-size: 0.7rem; }

    /* ===== Settings ===== */
    .settings-container { max-width: 100%; gap: 12px; }
    .settings-card { border-radius: var(--radius); }
    .settings-header { padding: 18px 18px 12px; }
    .settings-header h2 { font-size: 0.95rem; }
    .settings-body { padding: 18px; }
    .settings-form-actions { flex-direction: column; gap: 8px; }
    .settings-msg { margin-left: 0; margin-top: 6px; }
    .round-control { gap: 8px; }
    .round-presets { gap: 4px; }
    .round-presets .btn-xs { padding: 4px 8px; font-size: 0.7rem; }

    /* ===== Admin ===== */
    .admin-table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); }
    .admin-table { min-width: 650px; font-size: 0.8rem; }
    .admin-table th, .admin-table td { padding: 8px 10px; }
    .action-cell { flex-direction: column; }
    .action-cell .btn { width: 100%; text-align: center; }

    /* ===== Admin User Detail ===== */
    .cat-stat-card { flex-wrap: wrap; padding: 12px 14px; gap: 10px; }
    .cat-stat-info { min-width: 150px; }
    .detail-card-header { flex-wrap: wrap; gap: 8px; }
    .detail-round-info { width: 100%; justify-content: flex-start; }
    .detail-title { font-size: 0.8rem; }
    .section-count { display: none; }

    /* ===== Modal ===== */
    .modal-card { padding: 22px 18px; width: 94%; max-width: 100%; border-radius: var(--radius); }
    .modal-card h3 { font-size: 0.95rem; }
    .modal-actions { flex-direction: column; }
    .modal-actions .btn { width: 100%; }

    /* ===== Touch targets ===== */
    .btn { min-height: 44px; padding: 10px 18px; }
    .btn-sm { min-height: 36px; padding: 6px 14px; }
    .btn-xs { min-height: 30px; padding: 5px 10px; }
    .nav-link { min-height: 40px; }

    /* ===== General ===== */
    .form-group input,
    .settings-input { font-size: 16px; }
    .back-link { font-size: 0.8rem; }
}

/* Small phones */
@media (max-width: 480px) {
    html { font-size: 14px; }

    .nav-container { height: 44px; }
    .nav-links { top: 44px; }
    .main-container { padding: 16px 10px 40px; }

    .overview-stats { grid-template-columns: 1fr 1fr; }
    .admin-stats-5 { grid-template-columns: repeat(2, 1fr); }

    .auth-container { padding: 14px 10px; }
    .auth-card { padding: 30px 18px; border-radius: 20px; }
    .auth-header h1 { font-size: 1.3rem; }
    .auth-header p { font-size: 0.8rem; }
    .auth-form { gap: 14px; }
    .auth-form .form-group input { padding: 11px 14px; }

    .category-card { padding: 18px 14px; }
    .card-icon { font-size: 1.7rem; }
    .card-content h3 { font-size: 0.9rem; }

    .stat-item { padding: 14px 10px; }
    .stat-number { font-size: 1.4rem; }

    .answer-card { padding: 20px 14px; }
    .answer-nav .btn { min-height: 38px; padding: 8px 14px; font-size: 0.8rem; }
    .question-title-full { font-size: 1rem; }

    .round-tabs { gap: 3px; }
    .round-tab { padding: 5px 10px; font-size: 0.72rem; }
    .round-check-label { width: 28px; height: 28px; }
    .round-check-label span { width: 20px; height: 20px; }

    .detail-card-header { padding: 10px 12px; }
    .detail-title { font-size: 0.75rem; }

    .settings-header { padding: 14px 14px 10px; }
    .settings-body { padding: 14px; }
}