:root {
    --primary: #6366f1;
    /* Indigo 500 */
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    /* Slate 900 */
    --bg-surface: #1e293b;
    /* Slate 800 */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Glassmorphism Navigation */
.glass-nav {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    color: var(--primary);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-main);
}

.btn-logout {
    color: var(--danger) !important;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.25rem;
    cursor: pointer;
}

.bottom-nav,
.mobile-logout-btn {
    display: none;
}

/* Layout Containers */
.app-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.auth-card {
    width: 100%;
    max-width: 400px;
}

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

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 0.5rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
}

/* Tables */
.table-responsive {
    width: 100%;
    display: block;
    overflow-x: auto;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
    white-space: nowrap;
}

.table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
    background: rgba(255, 255, 255, 0.02);
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-pending {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

/* Grid */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Utility */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 1rem;
}

.text-muted {
    color: var(--text-muted);
}

.error-msg {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    body {
        padding-bottom: 80px !important;
    }

    .nav-links {
        display: none !important;
    }

    .mobile-menu-btn {
        display: none !important;
    }

    .mobile-logout-btn {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(239, 68, 68, 0.1);
        border: 1px solid rgba(239, 68, 68, 0.15);
        color: var(--danger) !important;
        font-size: 1rem;
        cursor: pointer;
        transition: all 0.2s ease;
        text-decoration: none;
    }

    .mobile-logout-btn:hover {
        background: rgba(239, 68, 68, 0.15);
        transform: scale(1.05);
    }

    .bottom-nav {
        display: flex !important;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.85);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        border-top: 1px solid var(--glass-border);
        z-index: 999;
        justify-content: space-around;
        align-items: center;
        padding: 0.5rem 0.25rem;
        box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.3);
    }

    .bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: var(--text-muted);
        text-decoration: none;
        font-size: 0.65rem;
        font-weight: 500;
        gap: 0.2rem;
        flex: 1;
        transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 0.25rem 0;
        text-align: center;
    }

    .bottom-nav a i {
        font-size: 1.2rem;
        transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s;
    }

    .bottom-nav a span {
        font-size: 0.65rem;
        letter-spacing: 0.01em;
    }

    .bottom-nav a:hover,
    .bottom-nav a.active {
        color: var(--primary);
    }

    .bottom-nav a.active i {
        transform: translateY(-2px) scale(1.05);
        color: var(--primary);
    }

    .bottom-nav a.active span {
        color: var(--text-main);
        font-weight: 600;
    }

    .grid {
        gap: 1rem !important;
    }

    .app-container {
        margin: 1rem auto !important;
        padding: 0 0.75rem !important;
    }

    .glass-card {
        padding: 1.25rem !important;
    }

    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .page-header>div {
        width: 100%;
    }

    .page-header>div:nth-child(2) {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        gap: 0.75rem !important;
    }

    .page-header .btn,
    .page-header>.btn {
        width: 100% !important;
        margin: 0 !important;
        text-align: center;
        justify-content: center;
    }

    /* Tables mobile tweaks */
    .table th,
    .table td {
        padding: 0.75rem 0.5rem !important;
        font-size: 0.85rem;
    }

    /* Modals mobile tweaks */
    .modal {
        align-items: flex-start !important;
        overflow-y: auto;
        padding: 1rem 0.5rem;
    }

    .modal-content {
        margin: 1rem auto !important;
        width: 95% !important;
        padding: 1.5rem !important;
    }

    /* Tabs mobile tweaks */
    .tabs {
        width: 100% !important;
        justify-content: space-between !important;
        gap: 0.25rem !important;
    }

    .tab {
        padding: 0.5rem 0.75rem !important;
        font-size: 0.85rem !important;
        flex: 1 !important;
        text-align: center !important;
    }
}

/* Modals */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
}

.modal-content {
    width: 100%;
    max-width: 500px;
    position: relative;
    margin: 2rem auto;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
    gap: 1rem;
    overflow-x: auto;
}

.tab {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.tab:hover {
    color: var(--text-main);
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}