/*
 * File: css/age-calculator.css
 * Description: Styles for Age Calculator - PREMIUM EDITION
 * Dependencies: tools.css, style.css
 * Updated: January 2026 - FIXED VERSION
 * 
 * FIXES APPLIED:
 * ✅ FIX #1: Stats grid better responsive on tiny screens
 * ✅ FIX #2: All numbers use tabular-nums to prevent jitter
 * ✅ FIX #3: Better mobile spacing
 */

/* Input Wrapper - Glass Effect */
.input-wrapper {
    background: var(--glass-bg); /* Global Glass Variable */
    border: var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    margin: 0 auto 40px;
    max-width: 600px;
    box-shadow: var(--glass-shadow);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: transform 0.3s ease;
}

.input-wrapper:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(147, 112, 219, 0.15);
}

.input-wrapper h3 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--text-dark);
    font-weight: 700;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(0,0,0,0.1);
    background: rgba(255,255,255,0.8);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus {
    border-color: var(--primary-color);
    background: white;
    outline: none;
    box-shadow: 0 0 0 4px rgba(147, 112, 219, 0.1);
}

.help-text {
    font-size: 0.8rem;
    color: #666;
    margin-top: 5px;
    font-style: italic;
}

.btn-large {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

/* Results Dashboard Animation */
.results-dashboard {
    animation: slideUp 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); filter: blur(5px); }
    to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* Main Result Card - Premium Purple Gradient */
.main-result-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 15px 35px rgba(147, 112, 219, 0.3);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
}

.main-result-card::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
    pointer-events: none;
}

.main-result-card h3 {
    margin-bottom: 25px;
    opacity: 0.95;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.age-display {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.age-unit {
    display: flex;
    flex-direction: column;
}

.age-number {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    text-shadow: 0 4px 10px rgba(0,0,0,0.2);
    /* ✅ Prevents number jumping during updates */
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum" 1;
    -moz-font-feature-settings: "tnum" 1;
    -webkit-font-feature-settings: "tnum" 1;
}

.age-label {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-top: 5px;
    font-weight: 500;
}

/* Live Counter - Dark Glass HUD */
.live-counter-card {
    background: rgba(20, 20, 30, 0.85); /* Dark Glass */
    color: var(--secondary-color); /* Orange Pop */
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    margin-bottom: 30px;
    font-family: 'Courier New', monospace;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.live-counter-card h3 {
    color: white;
    font-family: 'Poppins', sans-serif;
    margin-bottom: 10px;
    font-size: 1.1rem;
    opacity: 0.8;
}

.seconds-counter {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 5px;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(255, 165, 0, 0.3);
    /* ✅ Prevents number jumping during updates */
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum" 1;
    -moz-font-feature-settings: "tnum" 1;
    -webkit-font-feature-settings: "tnum" 1;
}

.counter-subtitle {
    color: rgba(255,255,255,0.5);
    font-size: 0.8rem;
    font-family: 'Poppins', sans-serif;
}

/* Stats Grid - Frosted Glass Cards */
.stats-section h3 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--text-dark);
    font-weight: 700;
}

.stats-grid {
    display: grid;
    /* ✅ FIX #1: Reduced from 160px to 140px for better small screen support */
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 15px; /* ✅ Reduced from 20px */
    margin-bottom: 40px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.6); /* Semi-transparent */
    padding: 25px 20px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.9);
    border-color: var(--primary-light);
    box-shadow: 0 10px 25px rgba(147, 112, 219, 0.15);
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
    /* ✅ Prevents number jumping during updates */
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum" 1;
    -moz-font-feature-settings: "tnum" 1;
    -webkit-font-feature-settings: "tnum" 1;
}

.stat-label {
    font-size: 0.85rem;
    color: #666;
    font-weight: 500;
}

/* Birthday Countdown - Brand Secondary Gradient */
.birthday-countdown {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
    padding: 35px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(255, 165, 0, 0.25);
    border: 1px solid rgba(255,255,255,0.2);
}

.birthday-countdown h3 {
    margin-bottom: 25px;
    font-weight: 700;
    text-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.countdown-display {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.countdown-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px 20px;
    border-radius: 12px;
    min-width: 90px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
}

.countdown-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
    /* ✅ Prevents number jumping during updates */
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum" 1;
    -moz-font-feature-settings: "tnum" 1;
    -webkit-font-feature-settings: "tnum" 1;
}

.countdown-label {
    font-size: 0.85rem;
    opacity: 0.95;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-top: 5px;
    display: block;
}

/* ✅ FIX #3: Responsive Polish - Mobile Optimizations */
@media (max-width: 768px) {
    .input-wrapper {
        padding: 30px 20px;
    }
    
    .form-grid {
        grid-template-columns: 1fr; /* Stack inputs vertically on mobile */
        gap: 15px;
    }
    
    .main-result-card {
        padding: 30px 20px;
    }
    
    .age-display {
        gap: 30px;
    }
    
    .age-number {
        font-size: 3rem;
    }
    
    .seconds-counter {
        font-size: 2rem;
    }
    
    .stats-grid {
        gap: 12px;
    }
    
    .stat-card {
        padding: 20px 15px;
    }
    
    .stat-value {
        font-size: 1.4rem;
    }
    
    .countdown-item {
        min-width: 70px;
        padding: 12px 15px;
    }
    
    .countdown-number {
        font-size: 1.5rem;
    }
    
    .birthday-countdown {
        padding: 25px 15px;
    }
}

/* ✅ FIX #1: Extra small phones (iPhone SE, small Androids) */
@media (max-width: 360px) {
    .stats-grid {
        /* Force 2 columns on tiny screens to prevent horizontal scroll */
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .stat-card {
        padding: 15px 10px;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .age-number {
        font-size: 2.5rem;
    }
    
    .age-label {
        font-size: 0.9rem;
    }
    
    .countdown-item {
        min-width: 60px;
        padding: 10px;
    }
    
    .countdown-number {
        font-size: 1.3rem;
    }
    
    .countdown-label {
        font-size: 0.75rem;
    }
}

/* Reduced Motion Support - Accessibility */
@media (prefers-reduced-motion: reduce) {
    .results-dashboard {
        animation: none;
    }
    
    .stat-card:hover,
    .input-wrapper:hover {
        transform: none;
    }
}