/* --- Age Calculator Modern Design --- */

.main-container {
    max-width: 1280px;
    margin: 160px auto 100px;
    text-align: center;
    padding: 0 5%;
}

.tool-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(167, 139, 250, 0.12);
    border: 1px solid rgba(167, 139, 250, 0.3);
    border-radius: 999px;
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-bottom: 20px;
    box-shadow: 0 0 20px rgba(167, 139, 250, 0.15);
}

.hero-text h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.4rem, 6.5vw, 4.2rem);
    font-style: italic;
    margin-bottom: 12px;
    line-height: 1.15;
    background: linear-gradient(180deg, #ffffff 40%, #c4b5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    color: var(--text-dim);
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

/* --- Controls & Unit Toggle --- */
.control-panel {
    display: flex;
    gap: 14px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.unit-toggle-wrap {
    display: inline-flex;
    background: rgba(15, 15, 25, 0.85);
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    padding: 4px;
    backdrop-filter: blur(10px);
}

.unit-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.unit-btn.active {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 0 15px rgba(167, 139, 250, 0.4);
}

.glass-pill {
    background: rgba(15, 15, 25, 0.85);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
    padding: 4px 24px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    transition: border-color 0.3s;
}

.glass-pill:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(167, 139, 250, 0.25);
}

.glass-pill input {
    background: none;
    border: none;
    color: white;
    padding: 12px 0;
    outline: none;
    width: 170px;
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
}

.sync-btn {
    background: var(--accent-gradient);
    background-size: 200% 200%;
    color: white;
    border: none;
    padding: 16px 36px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}

.sync-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(167, 139, 250, 0.5);
}

/* --- Quick Presets --- */
.quick-presets {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.preset-label {
    font-size: 0.76rem;
    color: var(--text-dim);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.preset-chip {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: #cbd5e1;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.76rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.preset-chip:hover {
    background: rgba(167, 139, 250, 0.15);
    border-color: var(--accent);
    color: #fff;
}

.action-btns {
    margin-top: 10px;
    margin-bottom: 40px;
    display: flex;
    gap: 14px;
    justify-content: center;
}

.action-btn {
    background: rgba(15, 15, 25, 0.85);
    border: 1px solid var(--glass-border);
    color: #cbd5e1;
    padding: 12px 28px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.82rem;
    letter-spacing: 0.5px;
    transition: all 0.25s ease;
}

.action-btn:hover {
    border-color: var(--accent);
    color: white;
    background: rgba(167, 139, 250, 0.12);
    box-shadow: 0 0 20px rgba(167, 139, 250, 0.2);
}

/* --- Planet Cards Grid --- */
.planet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 20px;
}

.planet-card {
    background: rgba(16, 16, 26, 0.7);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(167, 139, 250, 0.15);
    border-radius: 24px;
    padding: 36px 30px;
    text-align: left;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease, border-color 0.3s, box-shadow 0.3s;
}

.planet-card.active {
    opacity: 1;
    transform: translateY(0);
}

.planet-card:hover {
    transform: translateY(-6px);
    border-color: var(--p-color);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px var(--p-glow);
}

.planet-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--p-color);
    box-shadow: 0 0 12px var(--p-color);
}

.planet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.planet-name {
    font-family: 'Playfair Display', serif;
    font-size: 1.7rem;
    font-style: italic;
    margin: 0;
}

.planet-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--p-color);
    box-shadow: 0 0 12px var(--p-color);
}

.stat-group {
    margin-bottom: 20px;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 2px;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.stat-val {
    font-size: 1.45rem;
    font-weight: 400;
    color: #fff;
}

.stat-val small {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-left: 4px;
}

.next-bday-box {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.78rem;
    color: var(--accent);
    line-height: 1.5;
}

.watermark {
    display: none;
    text-align: center;
    margin-top: 50px;
    font-size: 0.75rem;
    letter-spacing: 6px;
    color: #666;
    text-transform: uppercase;
}

/* --- Cross-Promotion Banner --- */
.tool-promo-banner {
    margin: 70px auto 0;
    max-width: 820px;
    background: radial-gradient(ellipse at center, rgba(167, 139, 250, 0.12), rgba(15, 15, 25, 0.6));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 36px 30px;
    text-align: center;
}

.tool-promo-banner h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: #fff;
    margin-bottom: 8px;
}

.tool-promo-banner p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin-bottom: 22px;
}

.tool-promo-links {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.promo-btn {
    background: var(--accent-gradient);
    color: #fff;
    padding: 10px 22px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.promo-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(167, 139, 250, 0.4);
}

.promo-btn-alt {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
}

.promo-btn-alt:hover {
    background: rgba(167, 139, 250, 0.2);
    border-color: var(--accent);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .main-container { margin: 130px auto 60px; padding: 0 4%; }
    .control-panel { flex-direction: column; align-items: stretch; }
    .glass-pill, .sync-btn, .unit-toggle-wrap { width: 100%; justify-content: center; }
    .glass-pill input { width: 100%; text-align: center; }
    .action-btns { flex-direction: column; }
    .planet-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .planet-card { padding: 24px 20px; }
}

@media (max-width: 480px) {
    .hero-text h1 { font-size: clamp(1.8rem, 7vw, 2.5rem); }
    .planet-grid { grid-template-columns: 1fr; gap: 14px; }
}