:root {
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border-color: rgba(148, 163, 184, 0.1);
    --accent-primary: #38bdf8;
    --accent-secondary: #818cf8;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --success-color: #4ade80;
}

body {
    background-color: var(--bg-dark);
    /* Subtle background gradient */
    background-image:
        radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(129, 140, 248, 0.1) 0%, transparent 40%);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    color: var(--accent-primary);
    padding: 1.5rem;
    font-size: 1.1rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.card-body {
    padding: 2rem;
}

/* Forms */
.form-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control,
.form-select {
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 0.625rem 1rem;
    transition: all 0.2s ease;
}

.form-control:focus,
.form-select:focus {
    background-color: rgba(15, 23, 42, 0.8);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1);
    color: var(--text-primary);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
}

/* Button */
.btn-primary-custom {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.btn-primary-custom:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
    color: white;
}

.btn-primary-custom:active {
    transform: translateY(0);
}

.btn-primary-custom:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Title */
.app-title {
    font-weight: 800;
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
    letter-spacing: -0.025em;
}

/* Results Section */
.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.25rem;
}

.result-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.total-comp-value {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--success-color), #22c55e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin: 1rem 0;
}

.civ-equiv {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    display: inline-block;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.civ-equiv span {
    color: var(--text-primary);
    font-weight: 600;
}

hr.divider {
    border-color: var(--border-color);
    margin: 2rem 0;
}

/* Toast Fixes */
.toast.glass-card {
    background: rgba(22, 163, 74, 0.9) !important;
    /* Green tint */
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}