:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --sidebar-width: 260px;
}

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

body {
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.1) 0px, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-right: 1px solid var(--glass-border);
    padding: 2rem;
    position: fixed;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.nav-link i {
    font-size: 1.2rem;
}

.nav-item-has-submenu {
    position: relative;
}

.submenu {
    list-style: none;
    padding-left: 2.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    opacity: 0;
}

.nav-item-has-submenu:hover .submenu,
.nav-item-has-submenu.active .submenu {
    max-height: 200px;
    opacity: 1;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.submenu-link {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.5rem 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.submenu-link:hover,
.submenu-link.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.submenu-link i {
    font-size: 0.9rem;
}

.nav-link .bi-chevron-down {
    margin-left: auto;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.nav-item-has-submenu:hover .bi-chevron-down,
.nav-item-has-submenu.active .bi-chevron-down {
    transform: rotate(180deg);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 2rem;
    transition: margin-left 0.3s ease, width 0.3s ease;
}

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

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Mobile Toggle */
.mobile-menu-toggle {
    display: none;
    /* Hidden on desktop */
    font-size: 1.5rem;
    color: var(--text-main);
    background: none;
    border: none;
    cursor: pointer;
    margin-right: 1rem;
}

/* Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.stat-value {
    font-size: 1rem;
    font-weight: 700;
}

.stat-value.income {
    color: var(--success);
}

.stat-value.expense {
    color: var(--danger);
}

/* Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

/* Tables */
.table-container {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow-x: auto;
    /* Allow horizontal scroll on mobile */
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
    /* Force minimum width to prevent squishing */
}

th {
    text-align: left;
    padding: 1rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
    font-weight: 600;
}

td {
    padding: 1rem;
    border-top: 1px solid var(--glass-border);
}

.badge {
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-income {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.badge-expense {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

/* Forms */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: #1e293b;
    padding: 2rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    border: 1px solid var(--glass-border);
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: white;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .grid {
        grid-template-columns: 1fr;
    }

    .header h1 {
        font-size: 1.4rem;
    }

    /* Overlay for when sidebar is open */
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 900;
        backdrop-filter: blur(4px);
        display: none;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .hide-mobile {
        display: none !important;
    }
}