/* ============================================================
   NexGen Bank - Main Stylesheet
   Color Palette:
   - Navy Blue (Primary): #1B2A4A
   - Navy Medium: #243B6A
   - Gold (Accent): #D4A843
   - Gold Light: #F2D06B
   - Light Gray (Background): #F4F6F9
   - White: #FFFFFF
   ============================================================ */

:root {
    --navy-dark: #1B2A4A;
    --navy-medium: #243B6A;
    --navy-light: #2E4A7A;
    --gold-primary: #D4A843;
    --gold-light: #F2D06B;
    --gold-dark: #B8922F;
    --bg-light: #F4F6F9;
    --bg-white: #FFFFFF;
    --text-dark: #1E293B;
    --text-medium: #475569;
    --text-light: #94A3B8;
    --border-color: #E2E8F0;
    --success: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    --shadow-sm: 0 1px 3px rgba(27, 42, 74, 0.08);
    --shadow-md: 0 4px 12px rgba(27, 42, 74, 0.1);
    --shadow-lg: 0 10px 30px rgba(27, 42, 74, 0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

/* ============================================================
   BASE STYLES
   ============================================================ */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    min-height: 100vh;
}

a {
    color: var(--navy-medium);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--gold-primary);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--navy-dark);
    font-weight: 600;
    line-height: 1.3;
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-medium) 50%, var(--navy-light) 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(212, 168, 67, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.login-page::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(212, 168, 67, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.login-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.login-card .logo {
    display: block;
    margin: 0 auto 32px;
    width: 200px;
    height: auto;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 22px;
}

.login-card .subtitle {
    text-align: center;
    color: var(--text-medium);
    margin-bottom: 32px;
    font-size: 14px;
}

.login-card .role-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-light));
    color: var(--navy-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================================
   FORM STYLES
   ============================================================ */

.form-control {
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-control:focus {
    border-color: var(--navy-medium);
    box-shadow: 0 0 0 3px rgba(36, 59, 106, 0.1);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 6px;
    font-size: 13px;
}

.input-group-text {
    background: var(--bg-light);
    border: 1.5px solid var(--border-color);
    color: var(--text-medium);
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn-primary {
    background: linear-gradient(135deg, var(--navy-dark), var(--navy-medium));
    border: none;
    color: #fff;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--navy-medium), var(--navy-light));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(27, 42, 74, 0.3);
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-light));
    border: none;
    color: var(--navy-dark);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition);
}

.btn-gold:hover {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold-primary));
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(212, 168, 67, 0.4);
}

.btn-outline-navy {
    border: 1.5px solid var(--navy-medium);
    color: var(--navy-medium);
    background: transparent;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

.btn-outline-navy:hover {
    background: var(--navy-dark);
    color: #fff;
    border-color: var(--navy-dark);
}

/* ============================================================
   SIDEBAR NAVIGATION
   ============================================================ */

.sidebar {
    width: 260px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: linear-gradient(180deg, var(--navy-dark) 0%, #152238 100%);
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar .logo-area {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar .logo-area img {
    width: 160px;
    height: auto;
}

.sidebar .nav-menu {
    padding: 16px 0;
}

.sidebar .nav-item {
    padding: 0 12px;
    margin-bottom: 2px;
}

.sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    color: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
}

.sidebar .nav-link i {
    font-size: 18px;
    width: 22px;
    text-align: center;
}

.sidebar .nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.sidebar .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--gold-primary), var(--gold-dark));
    font-weight: 500;
}

.sidebar .nav-section-title {
    color: rgba(255, 255, 255, 0.4);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 16px 28px 8px;
}

.sidebar .user-info {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: auto;
    position: absolute;
    bottom: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
}

.sidebar .user-info .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--gold-primary);
}

.sidebar .user-info .user-name {
    color: #fff;
    font-size: 13px;
    font-weight: 500;
}

.sidebar .user-info .user-role {
    color: var(--gold-primary);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
}

/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */

.main-content {
    margin-left: 260px;
    min-height: 100vh;
    padding: 0;
    transition: var(--transition);
}

/* Top bar */
.top-bar {
    background: var(--bg-white);
    padding: 16px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.top-bar .page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--navy-dark);
    margin: 0;
}

.top-bar .user-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-bar .notification-btn {
    position: relative;
    background: none;
    border: none;
    color: var(--text-medium);
    font-size: 20px;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: var(--transition);
}

.top-bar .notification-btn:hover {
    background: var(--bg-light);
    color: var(--navy-dark);
}

.top-bar .notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    background: var(--danger);
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Content wrapper */
.content-wrapper {
    padding: 30px;
}

/* ============================================================
   CARDS & PANELS
   ============================================================ */

.card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    font-weight: 600;
    color: var(--navy-dark);
}

.card-body {
    padding: 24px;
}

/* Stat cards on dashboard */
.stat-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.stat-card .stat-icon.navy {
    background: rgba(27, 42, 74, 0.1);
    color: var(--navy-dark);
}

.stat-card .stat-icon.gold {
    background: rgba(212, 168, 67, 0.15);
    color: var(--gold-dark);
}

.stat-card .stat-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-card .stat-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.stat-card .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--navy-dark);
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-medium);
    margin-top: 2px;
}

/* ============================================================
   TABLES
   ============================================================ */

.table {
    margin-bottom: 0;
}

.table th {
    background: var(--bg-light);
    color: var(--text-medium);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 14px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.table tbody tr:hover {
    background: rgba(244, 246, 249, 0.6);
}

/* ============================================================
   TRANSACTION TYPE BADGES
   ============================================================ */

.badge-deposit {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-withdrawal {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-transfer {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* ============================================================
   BALANCE DISPLAY
   ============================================================ */

.balance-display {
    background: linear-gradient(135deg, var(--navy-dark), var(--navy-medium));
    border-radius: var(--radius-lg);
    padding: 32px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.balance-display::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(212, 168, 67, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.balance-display .balance-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    margin-bottom: 4px;
}

.balance-display .balance-amount {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
}

.balance-display .account-number {
    color: var(--gold-primary);
    font-size: 14px;
    margin-top: 12px;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

/* ============================================================
   ALERTS & NOTIFICATIONS
   ============================================================ */

.alert {
    border: none;
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #065F46;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #991B1B;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #92400E;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    color: #1E40AF;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-medium);
}

.empty-state i {
    font-size: 48px;
    color: var(--text-light);
    margin-bottom: 16px;
}

.empty-state h5 {
    color: var(--text-dark);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    max-width: 360px;
    margin: 0 auto;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .content-wrapper {
        padding: 20px 16px;
    }
}

@media (max-width: 767px) {
    .login-card {
        margin: 20px;
        padding: 32px 24px;
    }

    .balance-display .balance-amount {
        font-size: 28px;
    }

    .stat-card {
        padding: 16px;
    }

    .top-bar {
        padding: 12px 16px;
    }
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */

.text-navy { color: var(--navy-dark) !important; }
.text-gold { color: var(--gold-primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.bg-navy { background-color: var(--navy-dark) !important; }
.bg-gold { background-color: var(--gold-primary) !important; }
.border-gold { border-color: var(--gold-primary) !important; }

.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.rounded-lg { border-radius: var(--radius-lg); }

/* Smooth page transitions */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 3px;
}

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