:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    
    --color-income: #10b981;
    --color-income-bg: rgba(16, 185, 129, 0.1);
    
    --color-expense: #f43f5e;
    --color-expense-bg: rgba(244, 63, 94, 0.1);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    background-image: radial-gradient(circle at top right, rgba(59, 130, 246, 0.15), transparent 40%),
                      radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 40%);
    background-attachment: fixed;
}

/* Layout */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    display: flex;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    -webkit-background-clip: text;
    color: transparent;
    margin: 0;
}

nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Dashboard Header */
.dashboard-header {
    margin-bottom: 1.5rem;
}

.dashboard-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.dashboard-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Alert */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-success {
    background-color: var(--color-income-bg);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.card h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.card .amount {
    font-size: 1.5rem;
    font-weight: 700;
}

.balance-card .amount { color: var(--text-main); }
.income-card .amount { color: var(--color-income); }
.expense-card .amount { color: var(--color-expense); }

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .app-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .transaction-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .transaction-actions {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .grid-2-col {
        grid-template-columns: 1fr !important;
    }
    .responsive-flex-between {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.5rem;
    }
    .responsive-flex-between > div:last-child {
        width: 100%;
        justify-content: space-between;
    }
}

.report-content-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 768px) {
    .report-content-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.transaction-form-section, .transaction-history-section {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
}

h3 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

input[type="text"], input[type="number"], input[type="email"], input[type="password"], input[type="date"], select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: rgba(15, 23, 42, 0.5);
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

input[type="checkbox"], input[type="radio"] {
    width: auto;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* Fix autofill background in dark mode */
input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus, 
input:-webkit-autofill:active{
    -webkit-box-shadow: 0 0 0 30px #0f172a inset !important;
    -webkit-text-fill-color: white !important;
    transition: background-color 5000s ease-in-out 0s;
}

input:focus, select:focus {
    outline: none !important;
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5) !important;
}

/* Make calendar icon white in dark mode */
input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Transaction List */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.transaction-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.transaction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-radius: var(--radius-lg);
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
}

.transaction-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.transaction-item.income { border-left: 4px solid var(--color-income); }
.transaction-item.expense { border-left: 4px solid var(--color-expense); }

.transaction-info {
    width: 100%;
}

.transaction-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.transaction-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.category-badge {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.1rem 0.5rem;
    border-radius: 1rem;
    font-size: 0.75rem;
}

.badge-income {
    background-color: var(--color-income-bg);
    color: var(--color-income);
}

.badge-expense {
    background-color: var(--color-expense-bg);
    color: var(--color-expense);
}

.transaction-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.transaction-amount {
    font-weight: 700;
    font-size: 1.1rem;
}

.transaction-item.income .transaction-amount { color: var(--color-income); }
.transaction-item.expense .transaction-amount { color: var(--color-expense); }

.btn-delete {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    opacity: 0.5;
    transition: opacity 0.2s ease;
}

.btn-delete:hover {
    opacity: 1;
}

.delete-form {
    margin: 0;
}

.btn-quick-amount {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-quick-amount:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

.btn-filter {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-filter:hover {
    color: var(--text-main);
}

.btn-filter.active {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 0.5rem;
    margin-left: auto;
}

.nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-guest {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-left: auto;
}

.header-item-logo { order: 1; }
.header-item-nav { order: 2; display: flex; align-items: center; justify-content: flex-start; margin-left: 2rem; flex: 1; }
.header-item-user { order: 3; display: flex; align-items: center; gap: 1rem; margin-left: auto; }
.header-item-hamburger { order: 4; display: none; }

@media (max-width: 768px) {
    .app-header {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
    }
    
    .header-item-logo { order: 1; }
    .header-item-hamburger { order: 2; display: block; margin-left: auto; }
    .header-item-user { order: 3; width: 100%; margin-top: 1rem; margin-left: 0; justify-content: flex-start; }
    .header-item-nav { order: 4; width: 100%; display: none; margin-top: 1rem; margin-left: 0; flex: none; }
    
    
    .nav-container.show {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .nav-links, .nav-user, .nav-guest {
        flex-direction: column;
        width: 100%;
        align-items: flex-start;
        margin-left: 0;
        gap: 0.5rem;
    }
    
    .nav-links .nav-link {
        width: 100%;
        padding: 0.75rem;
        background: rgba(255, 255, 255, 0.03);
    }
}