:root {
    --bg-color: #0f111a;
    --text-color: #e0e0e0;
    --text-muted: #9aa0a6;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --danger-color: #ef4444;
    --success-color: #10b981;
    
    --glass-bg: rgba(20, 25, 40, 0.4);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

body.login-body {
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, #1e1b4b, #0f111a);
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    margin-bottom: 10px;
    color: #fff;
}
p {
    color: var(--text-muted);
    line-height: 1.5;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: #cbd5e1;
}
input[type="text"], input[type="password"], input[type="number"], input[type="date"], select, textarea {
    width: 100%;
    padding: 12px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: #fff;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}
.btn-primary {
    background: var(--primary-color);
    color: white;
}
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}
.btn-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}
.btn-danger:hover {
    background: var(--danger-color);
    color: white;
}
.btn-block {
    width: 100%;
    padding: 12px;
}

/* Alerts */
.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
}
.alert-danger {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
}

/* Login Container */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 40px;
    text-align: center;
}
.login-container h1 {
    margin-bottom: 10px;
}
.login-container p {
    margin-bottom: 30px;
}

/* Layout */
.sidebar {
    width: 250px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-right: 1px solid var(--glass-border);
    height: 100vh;
    position: fixed;
    display: flex;
    flex-direction: column;
}
.sidebar-header {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
}
.sidebar-nav {
    flex-grow: 1;
    padding: 20px 0;
}
.nav-link {
    display: block;
    padding: 15px 25px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s;
    font-weight: 500;
}
.nav-link:hover, .nav-link.active {
    background: rgba(255,255,255,0.05);
    color: #fff;
    border-left: 4px solid var(--primary-color);
}

.main-content {
    flex-grow: 1;
    margin-left: 250px;
    padding: 40px;
    max-width: 1200px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

/* Dashboard Grid */
.grid {
    display: grid;
    gap: 20px;
}

/* Flex utilities */
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}
.modal.active {
    display: flex;
}
.modal-content {
    background: #1e1e24;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 30px;
    width: 450px;
    max-width: 90%;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-close {
    position: absolute;
    top: 15px; right: 20px;
    color: #aaa;
    font-size: 24px;
    cursor: pointer;
}
.modal-close:hover { color: white; }

/* Mobile Header */
.mobile-header {
    display: none;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 20px;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}
.hamburger {
    font-size: 24px;
    cursor: pointer;
    margin-right: 15px;
    color: var(--primary-color);
}
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 998;
    backdrop-filter: blur(3px);
}

/* Responsive Table */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Media Queries for Mobile */
@media (max-width: 768px) {
    body {
        flex-direction: column;
    }
    .mobile-header {
        display: flex;
    }
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .sidebar-overlay.active {
        display: block;
    }
    .main-content {
        margin-left: 0;
        padding: 20px;
        width: 100%;
    }
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    .page-header .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        width: 100%;
    }
    .finance-grid {
        grid-template-columns: 1fr;
    }
    .modal-content {
        width: 95%;
        padding: 20px;
    }
    #recordsContainer {
        overflow-x: auto;
    }
    .mobile-close {
        display: block;
    }
}

.mobile-close {
    display: none;
    position: absolute; 
    top: 15px; 
    right: 15px; 
    font-size: 28px; 
    cursor: pointer;
    color: var(--text-muted);
}
.mobile-close:hover {
    color: white;
}