/**
 * Custom CSS for Investment Calculator
 * Includes dark mode support and additional styling
 */

:root,
[data-theme="light"] {
    --bg-gradient-start: #eff6ff;
    --bg-gradient-mid: #eef2ff;
    --bg-gradient-end: #f3e8ff;
    --card-bg: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --border-color: #e5e7eb;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
}

[data-theme="dark"] {
    --bg-gradient-start: #111827;
    --bg-gradient-mid: #1f2937;
    --bg-gradient-end: #111827;
    --card-bg: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --border-color: #374151;
    --input-bg: #374151;
    --input-border: #4b5563;
}

body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    transition: background 0.3s ease;
}

.theme-toggle-btn {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .theme-toggle-btn {
    background: var(--card-bg);
    border-color: var(--border-color);
}

.card-custom {
    background: var(--card-bg);
    border: none;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.card-custom .form-label,
.form-label-custom {
    color: var(--text-primary);
    font-weight: 600;
}

.form-control-custom {
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-control-custom:focus {
    background: var(--input-bg);
    border-color: #0d6efd;
    color: var(--text-primary);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

[data-theme="dark"] .form-control-custom::placeholder {
    color: #9ca3af;
}

.mode-toggle-group {
    background: #f3f4f6;
    border-radius: 0.5rem;
    padding: 0.25rem;
    display: inline-flex;
}

[data-theme="dark"] .mode-toggle-group {
    background: #374151;
}

.mode-toggle-btn {
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.2s ease;
    background: transparent;
    color: var(--text-primary);
}

.mode-toggle-btn.active {
    background: #0d6efd;
    color: white;
}

[data-theme="dark"] .mode-toggle-btn.active {
    background: #3b82f6;
}

.mode-toggle-btn:not(.active):hover {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .mode-toggle-btn:not(.active):hover {
    background: rgba(255, 255, 255, 0.1);
}

.total-value-card {
    background: linear-gradient(135deg, #3b82f6 0%, #4f46e5 100%);
    border-radius: 0.75rem;
    padding: 1.5rem;
    color: white;
}

[data-theme="dark"] .total-value-card {
    background: linear-gradient(135deg, #2563eb 0%, #4338ca 100%);
}

.stats-card {
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    background: var(--card-bg);
    transition: all 0.3s ease;
}

.stats-card.total-invested {
    background: #f9fafb;
}

[data-theme="dark"] .stats-card.total-invested {
    background: #374151;
}

.stats-card.estimated-returns {
    background: #f0fdf4;
    border-color: #86efac;
}

.stats-card.estimated-returns .text-success {
    color: #15803d !important;
}

[data-theme="dark"] .stats-card.estimated-returns {
    background: rgba(34, 197, 94, 0.1);
    border-color: #4ade80;
}

[data-theme="dark"] .stats-card.estimated-returns .text-success {
    color: #4ade80 !important;
}

.stats-card.return-percentage {
    background: #eff6ff;
    border-color: #93c5fd;
}

.stats-card.return-percentage .text-primary {
    color: #1e40af !important;
}

[data-theme="dark"] .stats-card.return-percentage {
    background: rgba(59, 130, 246, 0.1);
    border-color: #60a5fa;
}

[data-theme="dark"] .stats-card.return-percentage .text-primary {
    color: #60a5fa !important;
}

.breakdown-card {
    background: #f9fafb;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
}

[data-theme="dark"] .breakdown-card {
    background: #374151;
    border-color: var(--border-color);
}

.text-muted-custom {
    color: var(--text-secondary);
}

.text-primary-custom {
    color: var(--text-primary);
}

[data-theme="dark"] .text-success {
    color: #4ade80 !important;
}

[data-theme="dark"] .text-primary {
    color: #60a5fa !important;
}

[data-theme="dark"] .text-muted {
    color: #9ca3af !important;
}

.empty-state {
    color: var(--text-secondary);
    padding: 3rem 0;
}

.code-block {
    background: #f3f4f6;
    padding: 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    display: block;
    margin-top: 0.5rem;
    color: var(--text-primary);
}

[data-theme="dark"] .code-block {
    background: #374151;
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

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