/* ══════════════════════════════════════════════════════════
   Age Calculator — Tool CSS
   Prefix: ac- (age calculator)
   ══════════════════════════════════════════════════════════ */

/* ── Input Card ── */
.ac-input-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-4);
}

/* ── Input Two-column layout ── */
.ac-input-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
    align-items: start;
}

.ac-input-left {
    display: flex;
    flex-direction: column;
    max-width: 440px;
}

/* ── Age Slider Panel ── */
.ac-input-right {
    height: 100%;
}

.ac-age-slider-wrap {
    background: linear-gradient(145deg, var(--color-bg-secondary), var(--color-surface));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5) var(--space-5) var(--space-4);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    text-align: center;
    position: relative;
    overflow: hidden;
    height: 100%;
    box-sizing: border-box;
}

/* Subtle background glow */
.ac-age-slider-wrap::before {
    content: '';
    position: absolute;
    top: -40px; left: 50%;
    transform: translateX(-50%);
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.ac-slider-header {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    z-index: 1;
}

.ac-slider-emoji-age {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    z-index: 1;
}

.ac-slider-emoji {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    line-height: 1;
}

.ac-slider-emoji-m,
.ac-slider-emoji-f {
    font-size: 2.4rem;
    display: inline-block;
    transition: transform 0.2s ease;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
}

.ac-slider-emoji-m.pop,
.ac-slider-emoji-f.pop {
    transform: scale(1.2);
}

.ac-slider-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-2);
    position: relative;
    z-index: 1;
}

.ac-slider-num {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    letter-spacing: -0.03em;
    transition: opacity 0.1s;
    font-family: var(--font-heading);
}

.ac-slider-unit {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

/* Slider track wrapper */
.ac-slider-track-wrap {
    width: 100%;
    position: relative;
    z-index: 1;
}

/* Custom range slider */
.ac-age-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border);
    outline: none;
    cursor: pointer;
    position: relative;
    z-index: 2;
}

.ac-age-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99,102,241,0.5), 0 0 0 3px rgba(99,102,241,0.15);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    position: relative;
    z-index: 3;
}

.ac-age-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99,102,241,0.5);
}

.ac-age-slider:active::-webkit-slider-thumb {
    transform: scale(1.2);
    box-shadow: 0 4px 16px rgba(99,102,241,0.6), 0 0 0 5px rgba(99,102,241,0.2);
}

/* Gradient fill overlay */
.ac-slider-fill {
    position: absolute;
    top: 50%;
    left: 0;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--color-accent), #7C3AED);
    transform: translateY(-50%);
    pointer-events: none;
    transition: width 0.05s linear;
    z-index: 1;
}

.ac-slider-minmax {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-size: 10px;
    color: var(--color-text-muted);
    font-weight: 600;
    position: relative;
    z-index: 1;
    margin-top: -var(--space-1);
}

.ac-slider-hint {
    font-size: 11px;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
    position: relative;
    z-index: 1;
    opacity: 0.75;
}

/* Age-based emoji phases */
@media (max-width: 768px) {
    .ac-input-cols {
        grid-template-columns: 1fr;
    }
    .ac-age-slider-wrap {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        padding: var(--space-4);
        gap: var(--space-2);
    }
    .ac-slider-emoji { font-size: 2rem; }
    .ac-slider-num { font-size: 2rem; }
}

/* ── Date Panel ── */
.ac-date-panel {
    display: none;
}

.ac-date-panel.visible {
    display: block;
}

.ac-date-group {
    margin-bottom: var(--space-4);
}

.ac-date-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-2);
}

.ac-date-label span {
    font-weight: 400;
    text-transform: none;
    color: var(--color-text-muted);
    opacity: 0.7;
    letter-spacing: 0;
}

.ac-date-row {
    display: flex;
    gap: var(--space-2);
}

.ac-date-select {
    flex: 1;
    padding: 7px var(--space-3);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: var(--space-6);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.ac-date-select--month {
    flex: 2;
}

.ac-date-select--year {
    flex: 1.5;
}

.ac-date-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.ac-date-select.error {
    border-color: #EF4444;
}

.ac-error-msg {
    font-size: var(--text-xs);
    color: #EF4444;
    margin-top: var(--space-1);
    display: none;
}

.ac-error-msg.visible {
    display: block;
}

/* ── Calculate Button ── */
.ac-calculate-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px var(--space-5);
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    color: #fff;
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    margin-top: var(--space-3);
    width: fit-content;
}

.ac-calculate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.ac-calculate-btn:active {
    transform: translateY(0);
}

/* ── Results Wrapper ── */
.ac-results {
    display: none;
}

.ac-results.visible {
    display: block;
    animation: ac-fade-in 0.3s ease;
}

@keyframes ac-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero Display ── */
.ac-hero {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8) var(--space-6);
    margin-bottom: var(--space-4);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ac-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.ac-hero-label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

.ac-hero-age {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.ac-hero-old {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.ac-born-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* ── Units Grid ── */
.ac-units-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.ac-units-title {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-4);
}

.ac-units-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.ac-unit-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-3);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.ac-unit-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.ac-unit-card--seconds {
    border-color: var(--color-accent);
    background: rgba(99, 102, 241, 0.05);
    position: relative;
}

.ac-unit-card--seconds::after {
    content: 'LIVE';
    position: absolute;
    top: -8px;
    right: 8px;
    background: #10B981;
    color: #fff;
    font-size: 9px;
    font-weight: 800;
    padding: 1px 6px;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
}

.ac-unit-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-1);
}

.ac-unit-value {
    font-size: clamp(1rem, 2vw, 1.4rem);
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.1;
}

.ac-unit-card--seconds .ac-unit-value {
    font-family: var(--font-mono);
    font-size: clamp(0.85rem, 1.6vw, 1.15rem);
    color: var(--color-accent);
    font-variant-numeric: tabular-nums;
}

/* ── Countdown ── */
.ac-countdown-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.ac-countdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.ac-countdown-title {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text);
}

.ac-countdown-date {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 3px 10px;
    border-radius: var(--radius-full);
}

.ac-countdown-segments {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.ac-cd-segment {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    min-width: 70px;
}

.ac-cd-value {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--color-accent);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.ac-cd-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 4px;
}

.ac-cd-colon {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-text-muted);
    padding-bottom: var(--space-4);
    user-select: none;
}

/* ── Birthday Progress Bar (under countdown) ── */
.ac-birthday-progress {
    margin-top: var(--space-2);
}

.ac-bp-track {
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--space-2);
}

.ac-bp-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), #7C3AED);
    border-radius: 4px;
    transition: width 0.8s ease;
}

.ac-bp-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ── Tab Navigation ── */
.ac-tabs-nav {
    display: flex;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    border-bottom: none;
    overflow-x: auto;
    scrollbar-width: none;
}

.ac-tabs-nav::-webkit-scrollbar {
    display: none;
}

.ac-tab-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.ac-tab-btn:hover {
    color: var(--color-text);
    background: rgba(99, 102, 241, 0.05);
}

.ac-tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.ac-tab-panel {
    display: none;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.ac-tab-panel.active {
    display: block;
}

/* ── Fact Cards Grid ── */
.ac-fact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.ac-fact-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.ac-fact-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    border-color: var(--color-accent);
}

.ac-fact-icon {
    font-size: 1.6rem;
    line-height: 1;
    margin-bottom: var(--space-1);
}

.ac-fact-type {
    font-size: 10px;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.ac-fact-value {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.ac-fact-detail {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ── Famous Birthdays & Historical Events ── */
.ac-panel-title {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.ac-list-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-4);
}

.ac-list-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-fast);
}

.ac-list-item:last-child {
    border-bottom: none;
}

.ac-list-item:hover {
    background: rgba(99, 102, 241, 0.04);
}

.ac-list-year {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-accent);
    background: rgba(99, 102, 241, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 42px;
    text-align: center;
}

.ac-list-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.ac-list-text strong {
    color: var(--color-text);
    font-weight: 600;
}

/* ── Life Stats ── */
.ac-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.ac-stat-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.ac-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.ac-stat-icon {
    font-size: 1.6rem;
    margin-bottom: var(--space-2);
    display: block;
}

.ac-stat-value {
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 2px;
    line-height: 1.1;
}

.ac-stat-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    line-height: 1.3;
}

/* ── Life Progress Bar ── */
.ac-life-bar-wrap {
    margin-bottom: var(--space-5);
}

.ac-life-bar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.ac-life-bar-title {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text);
}

.ac-life-bar-pct {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-accent);
}

.ac-life-bar {
    position: relative;
    height: 28px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    overflow: visible;
    display: flex;
    border: 1px solid var(--color-border);
}

.ac-life-segment {
    height: 100%;
    position: relative;
    transition: opacity var(--transition-fast);
}

.ac-life-segment:hover {
    opacity: 0.85;
}

.ac-life-segment--childhood  { background: #60A5FA; border-radius: var(--radius-md) 0 0 var(--radius-md); }
.ac-life-segment--teen        { background: #34D399; }
.ac-life-segment--young       { background: #A78BFA; }
.ac-life-segment--middle      { background: #F97316; }
.ac-life-segment--senior      { background: #F87171; border-radius: 0 var(--radius-md) var(--radius-md) 0; }

.ac-life-marker {
    position: absolute;
    top: -4px;
    bottom: -4px;
    width: 4px;
    background: #fff;
    border-radius: 2px;
    box-shadow: 0 0 0 2px var(--color-accent), 0 0 12px rgba(99, 102, 241, 0.6);
    animation: ac-pulse 2s ease-in-out infinite;
    z-index: 2;
    transform: translateX(-50%);
}

@keyframes ac-pulse {
    0%, 100% { box-shadow: 0 0 0 2px var(--color-accent), 0 0 8px rgba(99, 102, 241, 0.5); }
    50%       { box-shadow: 0 0 0 3px var(--color-accent), 0 0 16px rgba(99, 102, 241, 0.8); }
}

.ac-life-bar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.ac-legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.ac-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Milestones ── */
.ac-milestone-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
}

.ac-milestone-list::before {
    content: '';
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.ac-milestone-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    position: relative;
}

.ac-milestone-dot {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.ac-milestone-dot--past {
    background: rgba(16, 185, 129, 0.15);
    border: 2px solid #10B981;
}

.ac-milestone-dot--current {
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    animation: ac-pulse 2s ease-in-out infinite;
}

.ac-milestone-dot--future {
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
}

.ac-milestone-content {
    flex: 1;
    padding-top: var(--space-2);
}

.ac-milestone-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

.ac-milestone-detail {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* ── Summary Card ── */
.ac-summary-card {
    background: linear-gradient(160deg, #0d0b1e 0%, #1e1a45 40%, #16103a 70%, #0a0820 100%);
    border-radius: var(--radius-xl);
    padding: 0;
    margin-bottom: var(--space-4);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(99, 102, 241, 0.4), 0 0 0 1px rgba(167,139,250,0.15);
}

/* Top orb */
.ac-summary-card::before {
    content: '';
    position: absolute;
    top: -60px; right: -40px;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(167,139,250,0.25) 0%, transparent 65%);
    pointer-events: none;
}

/* Bottom orb */
.ac-summary-card::after {
    content: '';
    position: absolute;
    bottom: -50px; left: -30px;
    width: 240px; height: 240px;
    background: radial-gradient(circle, rgba(96,165,250,0.18) 0%, transparent 65%);
    pointer-events: none;
}

/* Rainbow top bar */
.ac-summary-card-accent {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f472b6, #a78bfa, #60a5fa, #34d399, #fbbf24, #f472b6);
    background-size: 200% 100%;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    z-index: 2;
    animation: ac-shimmer 4s linear infinite;
}

@keyframes ac-shimmer {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}

/* Hero section */
.ac-summary-hero {
    padding: var(--space-5) var(--space-6) var(--space-3);
    text-align: center;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.ac-summary-cake {
    font-size: 3rem;
    line-height: 1;
    filter: drop-shadow(0 6px 16px rgba(0,0,0,0.5));
    animation: ac-cake-bob 3s ease-in-out infinite;
}

@keyframes ac-cake-bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.ac-summary-age {
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #fff 0%, #e0d7ff 50%, #c4b5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ac-summary-born {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.65);
    letter-spacing: 0.04em;
    font-weight: 400;
}

/* Divider */
.ac-summary-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    margin: var(--space-2) var(--space-6) 0;
}

/* Info grid — 2x2 */
.ac-summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6) var(--space-3);
    position: relative;
    z-index: 1;
}

.ac-summary-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-3);
    border: 1px solid rgba(255,255,255,0.07);
    transition: background 0.2s, transform 0.2s;
}

.ac-summary-item:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-1px);
}

/* Per-item accent colors via nth-child */
.ac-summary-item:nth-child(1) { border-left: 3px solid #f472b6; } /* Birthday — Pink */
.ac-summary-item:nth-child(2) { border-left: 3px solid #60a5fa; } /* Zodiac — Blue */
.ac-summary-item:nth-child(3) { border-left: 3px solid #a78bfa; } /* Generation — Purple */
.ac-summary-item:nth-child(4) { border-left: 3px solid #34d399; } /* Life Stats — Green */

.ac-summary-item-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.ac-summary-item-label {
    font-size: 10px;
    font-weight: 700;
    color: rgba(255,255,255,0.45);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 3px;
}

.ac-summary-item-value {
    font-size: var(--text-sm);
    font-weight: 700;
    color: rgba(255,255,255,0.95);
    line-height: 1.3;
}

/* Branding strip */
.ac-summary-branding {
    text-align: center;
    font-size: 10px;
    color: rgba(255,255,255,0.25);
    padding: var(--space-1) var(--space-6) var(--space-4);
    letter-spacing: 0.08em;
    position: relative;
    z-index: 1;
}

.ac-summary-actions {
    display: flex;
    gap: var(--space-3);
}

.ac-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ac-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-text);
}

.ac-btn--primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

.ac-btn--primary:hover {
    background: #5B21B6;
    border-color: #5B21B6;
    color: #fff;
}

/* ── Toast ── */
.ac-toast {
    position: fixed;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #10B981;
    color: #fff;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 9999;
    white-space: nowrap;
}

.ac-toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .ac-units-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ac-fact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .ac-countdown-segments {
        gap: var(--space-1);
    }

    .ac-cd-segment {
        min-width: 58px;
        padding: var(--space-2) var(--space-3);
    }
}

@media (max-width: 480px) {
    .ac-units-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ac-fact-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ac-stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ac-date-row {
        flex-direction: column;
    }

    .ac-date-select {
        flex: none;
        width: 100%;
    }

    .ac-summary-grid {
        grid-template-columns: 1fr;
    }

    .ac-input-card {
        padding: var(--space-4);
    }

    .ac-hero {
        padding: var(--space-5) var(--space-4);
    }
}