/* ============================================
   DESIGN SYSTEM
   ============================================ */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #ffffff;
    --border-subtle: rgba(0, 0, 0, 0.08);
    --border-focus: #2D835C;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --accent-green: #2D835C;
    --accent-green-glow: rgba(45, 131, 92, 0.1);
    --accent-burgundy: #851B30;
    --accent-burgundy-glow: rgba(133, 27, 48, 0.1);
    --gradient-hero: linear-gradient(135deg, #2D835C 0%, #1e593e 100%);
    --gradient-card: linear-gradient(145deg, #ffffff, #f8fafc);
    --gradient-accent: linear-gradient(135deg, #2D835C, #1e593e);
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 10px 30px rgba(45, 131, 92, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

.calculator-wrapper {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 16px 60px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
}

.calculator-wrapper * {
    box-sizing: border-box;
}

.calculator-wrapper .hero {
    text-align: center;
    margin-bottom: 40px;
    padding: 48px 24px 36px;
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.calculator-wrapper .hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.04) 0%, transparent 60%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0); }
    100% { transform: translate(10%, 10%); }
}

.calculator-wrapper .hero-content {
    position: relative;
    z-index: 1;
}

.calculator-wrapper .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: white;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.calculator-wrapper .hero h1 {
    font-size: clamp(24px, 5vw, 36px);
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 10px;
    color: white;
}

.calculator-wrapper .hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    max-width: 520px;
    margin: 0 auto;
}

.calculator-wrapper .card {
    background: var(--gradient-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
    transition: border-color 0.3s ease;
}

.calculator-wrapper .card:hover {
    border-color: rgba(45, 131, 92, 0.2);
}

.calculator-wrapper .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.calculator-wrapper .card-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.calculator-wrapper .card-icon.blue { background: var(--accent-green-glow); color: var(--accent-green); }
.calculator-wrapper .card-icon.violet { background: var(--accent-green-glow); color: var(--accent-green); }

.calculator-wrapper .card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
}

.calculator-wrapper .card-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.calculator-wrapper .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.calculator-wrapper .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.calculator-wrapper .form-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.calculator-wrapper .form-input {
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    outline: none;
    width: 100%;
}

.calculator-wrapper .form-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-green-glow);
}

.calculator-wrapper .form-prefix {
    position: relative;
}

.calculator-wrapper .form-prefix .prefix {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    pointer-events: none;
}

.calculator-wrapper .form-prefix .form-input {
    padding-left: 30px;
}

.calculator-wrapper .results-card {
    background: #ffffff;
    border: 1px solid rgba(45, 131, 92, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.calculator-wrapper .results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.calculator-wrapper .result-tile {
    background: #f8fafc;
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.2s ease;
    text-align: center;
}

.calculator-wrapper .result-tile.highlight {
    background: rgba(45, 131, 92, 0.03);
    border-color: rgba(45, 131, 92, 0.1);
}

.calculator-wrapper .result-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.calculator-wrapper .result-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.calculator-wrapper .result-value.text-emerald { color: var(--accent-green); }

.calculator-wrapper .info-bar {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 18px;
    background: var(--accent-burgundy-glow);
    border: 1px solid rgba(133, 27, 48, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.calculator-wrapper .info-bar-icon {
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

.calculator-wrapper .info-bar-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 640px) {
    .calculator-wrapper .form-grid {
        grid-template-columns: 1fr;
    }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.calculator-wrapper .animate-in {
    animation: fadeInUp 0.5s ease forwards;
}

@keyframes countUp {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.calculator-wrapper .result-value.animating {
    animation: countUp 0.35s ease;
}