:root {
    --bg-main: #0f1115;
    --bg-card: #181a20;
    --bg-hover: #22252d;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-color: #10b981;
    --accent-hover: #059669;
    --danger-color: #ef4444;
    --border-color: #334155;
    --font-main: 'Inter', sans-serif;
    --glass-bg: rgba(24, 26, 32, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 24px 0;
    display: flex;
    flex-direction: column;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 24px;
    margin-bottom: 40px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo i {
    color: var(--accent-color);
    font-size: 28px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border-right: 4px solid var(--accent-color);
}

.nav-link i {
    font-size: 20px;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.page-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 15px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-family: var(--font-main);
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #374151;
}

/* Stats */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.stat-card {
    background-color: var(--bg-card);
    padding: 24px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease;
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.stat-info p {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Table Section */
.table-section {
    background-color: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    overflow: hidden;
}

.table-header {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--bg-main);
    border-radius: 8px;
    padding: 8px 16px;
    width: 300px;
    border: 1px solid var(--border-color);
}

.search-box i {
    color: var(--text-secondary);
    margin-right: 8px;
    font-size: 20px;
}

.search-box input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    width: 100%;
    outline: none;
    font-family: var(--font-main);
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 16px 24px;
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 0.05em;
    background-color: rgba(0, 0, 0, 0.2);
}

td {
    padding: 20px 24px;
    font-size: 15px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

tr {
    transition: background-color 0.2s;
}

tr:hover {
    background-color: var(--bg-hover);
}

.symbol-col {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.symbol-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.actions-col {
    text-align: right;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all 0.2s;
}

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

.icon-btn.delete-btn:hover {
    color: var(--danger-color);
    background-color: rgba(239, 68, 68, 0.1);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-card);
    width: 100%;
    max-width: 500px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(0);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close-btn {
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.close-btn:hover {
    color: #fff;
}

form {
    padding: 24px;
}

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

.form-row {
    display: flex;
    gap: 20px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

input[type="text"], input[type="number"], input[type="date"], input[type="email"], input[type="password"] {
    width: 100%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: var(--font-main);
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus, input[type="number"]:focus, input[type="date"]:focus, input[type="email"]:focus, input[type="password"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 32px;
}

@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 24px;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
    .nav-menu {
        display: none;
    }
    .logo {
        margin-bottom: 0;
        padding: 0;
    }
}

/* Auth Pages */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: radial-gradient(circle at top right, #1f2937, var(--bg-color));
}

.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.auth-card {
    padding: 40px 30px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.auth-header h1 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 5px;
}

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

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
    margin-top: 10px;
    padding: 12px;
}

/* Mobile Optimization & Settings */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
    /* Auth Layout */
    .auth-card {
        padding: 30px 20px;
    }
    
    .auth-header h1 {
        font-size: 1.5rem;
    }
    
    .form-group input {
        font-size: 16px; /* Prevents iOS auto-zoom */
        padding: 12px;
    }
    
    .btn {
        padding: 12px;
        font-size: 1rem;
    }
    
    /* App Layout */
    .app-container {
        flex-direction: column;
    }
    
    /* Move sidebar to bottom nav on mobile */
    .sidebar {
        width: 100%;
        height: auto;
        flex-direction: row;
        position: fixed;
        bottom: 0;
        z-index: 100;
        padding: 10px;
        order: 2;
        border-right: none;
        border-top: 1px solid var(--border-color);
        justify-content: space-around;
        align-items: center;
    }
    
    .sidebar .logo {
        display: none;
    }
    
    .nav-menu {
        flex-direction: row;
        flex: 1;
        justify-content: space-around;
        gap: 0;
    }
    
    .nav-link {
        flex-direction: column;
        padding: 5px;
        font-size: 0.7rem;
        gap: 5px;
        border-radius: 8px;
    }
    
    .nav-link i {
        font-size: 1.4rem;
        margin-right: 0;
    }
    
    .user-profile {
        padding: 5px !important;
        border-top: none !important;
        margin-top: 0 !important;
        border-left: 1px solid var(--border-color);
    }
    
    .main-content {
        padding: 20px;
        padding-bottom: 90px; /* Space for bottom nav */
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .stats-section {
        grid-template-columns: 1fr;
    }
}