/* ============================================
   PROFESSIONAL INVESTMENT TRACKER CSS
   Clean, Modern, Banking-Grade Design
   ============================================ */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --border: #e2e8f0;
    --sidebar-width: 260px;
    --header-height: 60px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f1f5f9;
    color: var(--dark);
    line-height: 1.5;
}

/* ============================================
   APP LAYOUT
   ============================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar - Desktop Only */
.sidebar {
    width: var(--sidebar-width);
    background: var(--dark);
    color: #94a3b8;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    transition: all 0.3s ease;
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid #334155;
    margin-bottom: 20px;
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    letter-spacing: -0.5px;
}

.sidebar-header h2 i {
    color: var(--primary);
    margin-right: 8px;
}

.sidebar-subtitle {
    font-size: 0.7rem;
    color: #64748b;
    margin-top: 5px;
}

.sidebar-nav {
    flex: 1;
    padding: 0 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin: 4px 0;
    color: #94a3b8;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-item i {
    width: 20px;
    font-size: 1rem;
}

.nav-item:hover {
    background: #334155;
    color: white;
}

.nav-item.active {
    background: var(--primary);
    color: white;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid #334155;
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: #334155;
    border-radius: 10px;
    margin-bottom: 12px;
    font-size: 0.8rem;
    color: white;
}

.user-info i {
    font-size: 1.2rem;
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    text-decoration: none;
    border-radius: 10px;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background: var(--danger);
    color: white;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* Mobile Top Bar - Hidden on Desktop */
.mobile-top-bar {
    display: none;
}

/* Content Wrapper */
.content-wrapper {
    padding: 30px 35px;
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--dark);
    letter-spacing: -0.3px;
}

.page-header p {
    color: var(--gray);
    margin-top: 5px;
    font-size: 0.875rem;
}

/* ============================================
   DASHBOARD CARDS
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 35px;
}

.stat-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

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

.stat-card .stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray);
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
}

.stat-card .stat-icon {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 2.5rem;
    opacity: 0.15;
    color: var(--primary);
}

.stat-change {
    font-size: 0.7rem;
    color: var(--gray);
    margin-top: 8px;
}

/* ============================================
   PROFESSIONAL FORMS - Grid Layout
   ============================================ */
.card {
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 25px;
}

.card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
}

.card-header h3 i {
    color: var(--primary);
    margin-right: 8px;
}

.card-body {
    padding: 24px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    margin-bottom: 0;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input:hover,
.form-group select:hover {
    border-color: #cbd5e1;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: white;
    color: var(--gray);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--light);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
}

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

.btn-warning:hover {
    background: #d97706;
}

/* Action Buttons Bar */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

/* ============================================
   TABLES
   ============================================ */
.table-container {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: white;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.data-table th {
    text-align: left;
    padding: 14px 16px;
    background: #f8fafc;
    font-weight: 600;
    color: var(--gray);
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--dark);
}

.data-table tbody tr:hover {
    background: #f8fafc;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 500;
}

.badge-active {
    background: #d1fae5;
    color: #065f46;
}

.badge-pending {
    background: #fed7aa;
    color: #92400e;
}

.badge-closed {
    background: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background: #fed7aa;
    color: #92400e;
}

/* ============================================
   SIGNATURE SECTION
   ============================================ */
.signature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 20px 0;
}

.signature-box {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 15px;
    background: #fafbfc;
}

.signature-box h4 {
    font-size: 0.85rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.signature-box canvas {
    width: 100%;
    height: 150px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: white;
}

.signature-box button {
    margin-top: 10px;
    font-size: 0.7rem;
}

.agreement-box {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.agreement-box h4 {
    color: var(--primary);
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.agreement-box ul {
    margin-left: 20px;
    font-size: 0.8rem;
    color: var(--gray);
}

.agreement-box li {
    margin: 6px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.85rem;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 0.875rem;
}

.alert-success {
    background: #ecfdf5;
    border-left: 4px solid var(--success);
    color: #065f46;
}

.alert-error {
    background: #fef2f2;
    border-left: 4px solid var(--danger);
    color: #991b1b;
}

.alert-warning {
    background: #fffbeb;
    border-left: 4px solid var(--warning);
    color: #92400e;
}

.alert-info {
    background: #eff6ff;
    border-left: 4px solid var(--primary);
    color: #1e40af;
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-box h2 {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
}

.login-box h3 {
    text-align: center;
    color: var(--gray);
    margin-bottom: 30px;
    font-size: 1rem;
    font-weight: normal;
}

.login-box .form-group {
    margin-bottom: 20px;
}

.login-box .btn-primary {
    width: 100%;
    justify-content: center;
}

.demo-cred {
    margin-top: 20px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--gray);
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ============================================
   RESPONSIVE - Mobile Only
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
        z-index: 1000;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding-bottom: 80px;
    }
    
    /* Mobile Top Bar */
    .mobile-top-bar {
        display: flex;
        position: sticky;
        top: 0;
        background: white;
        padding: 12px 16px;
        justify-content: space-between;
        align-items: center;
        border-bottom: 1px solid var(--border);
        z-index: 99;
    }
    
    .menu-toggle {
        background: none;
        border: none;
        font-size: 1.3rem;
        cursor: pointer;
        color: var(--dark);
        padding: 8px;
    }
    
    .content-wrapper {
        padding: 20px 16px 30px 16px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .form-group.full-width {
        grid-column: span 1;
    }
    
    .signature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .card-header {
        padding: 14px 18px;
    }
    
    .card-body {
        padding: 18px;
    }
    
    .page-header h1 {
        font-size: 1.35rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px 10px;
        font-size: 0.7rem;
    }
    
    .action-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .action-bar .btn {
        justify-content: center;
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .data-table {
        min-width: 550px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content-wrapper {
        padding: 15px 12px 25px 12px;
    }
    
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .login-box {
        margin: 20px;
        padding: 25px;
    }
}

/* Suggestions box for autocomplete */
.suggestions-box {
    position: absolute;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    width: 100%;
    box-shadow: var(--shadow-md);
}

.suggestion-item {
    padding: 10px 12px;
    cursor: pointer;
    transition: background 0.2s;
}

.suggestion-item:hover {
    background: var(--light);
}

/* ============================================
   HIDE MOBILE BOTTOM NAV ON DESKTOP
   ============================================ */
@media (min-width: 769px) {
    .mobile-bottom-nav-fixed {
        display: none !important;
    }
    
    .mobile-bottom-spacer {
        display: none !important;
    }
}