:root {
    /* Colors */
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #38bdf8;
    --accent-secondary: #818cf8;
    --income: #10b981;
    --expense: #ef4444;
    --border: rgba(255, 255, 255, 0.1);
    --glass: rgba(30, 41, 59, 0.7);

    /* Spacing & Shadows */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --radius: 12px;
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(56, 189, 248, 0.2);
}

[data-theme="light"] {
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border: rgba(0, 0, 0, 0.05);
    --glass: rgba(255, 255, 255, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color 0.3s ease;
    overflow-x: hidden;
    width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

h1 {
    font-size: 1.875rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Glassmorphism Cards */
.card {
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-glow);
}

.filter-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.price-range-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    flex-grow: 1;
}

.price-inputs {
    display: flex;
    gap: 0.5rem;
    flex-grow: 1;
}

.price-inputs input {
    width: 0;
    flex-grow: 1;
    min-width: 60px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.balance-card {
    grid-column: span 1;
}

/* Stats */
.stat-value {
    font-size: 2rem;
    font-weight: 800;
    margin: 0.5rem 0;
}

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

/* Layout for Main Content */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

/* Mobile Optimizations */
@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .container {
        padding: 1rem;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 1.5rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        margin-bottom: 1.5rem;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

    .filters-card .input-group {
        flex-direction: column;
    }

    #category-filter {
        width: 100% !important;
    }

    .price-range-container {
        flex-wrap: wrap;
        justify-content: center;
    }

    .card {
        padding: var(--spacing-md);
    }

    /* Better touch targets for mobile */
    .btn,
    .theme-toggle,
    select,
    input {
        min-height: 48px;
    }

    .transaction-item {
        padding: 0.75rem 0.5rem;
    }

    /* Monthly summary improvements */
    #monthly-summary>div {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.5rem;
    }

    #monthly-summary span {
        border-left: none !important;
        padding-left: 0 !important;
    }
}

@media (max-width: 480px) {
    .stat-value {
        font-size: 1.25rem;
    }

    .transaction-item {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.75rem;
    }

    .transaction-item>div:last-child {
        width: 100%;
        display: flex;
        justify-content: space-between;
        padding-top: 0.5rem;
        border-top: 1px solid var(--border);
    }
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Inputs & Dropdowns */
.input-group {
    margin-bottom: 1rem;
}

input,
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--card-bg) !important;
    border: 2px solid var(--border) !important;
    /* Thickened border */
    border-radius: var(--radius);
    color: var(--text-primary) !important;
    outline: none;
    transition: all 0.2s ease;
    display: block;
    visibility: visible !important;
}

select {
    cursor: pointer;
    background-image: none !important;
    /* Remove any broken custom arrows */
}

select option {
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 10px;
}

input:focus,
select:focus {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

/* Dark Mode Toggle & Buttons */
.theme-toggle {
    background: var(--card-bg);
    /* Solid background */
    border: 2px solid var(--border);
    color: var(--text-primary);
    width: 44px;
    /* Slightly larger */
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.1);
}

.theme-toggle ion-icon {
    font-size: 1.25rem;
    pointer-events: none;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.transaction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    animation: slideIn 0.3s ease-out forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}