:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-color: #1e293b;
    --text-light: #64748b;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #22c55e;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

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

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

h1, h2, h3 {
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--text-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Utilities */
.container {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

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

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

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

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

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.login-card {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.login-header p {
    color: var(--text-light);
    font-size: 0.875rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-color);
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.login-btn-full {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    margin-top: 0.5rem;
}

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

.card {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Forms in dashboard */
.reservation-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

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

/* Tables */
.table-container {
    overflow-x: auto;
}

.modern-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 0;
}

.modern-table th {
    background-color: #f8fafc;
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.modern-table td {
    padding: 1rem 1.5rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.modern-table tbody tr {
    transition: background-color 0.2s;
}

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

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-free {
    background-color: #dcfce7;
    color: #166534;
}

.status-confirmed {
    background-color: #dbeafe;
    color: #1e40af;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    .reservation-form {
        grid-template-columns: 1fr;
    }
    
    .modern-table thead {
        display: none;
    }
    
    .modern-table, .modern-table tbody, .modern-table tr, .modern-table td {
        display: block;
        width: 100%;
    }
    
    .modern-table tr {
        margin-bottom: 1rem;
        background: white;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
    }
    
    .modern-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: right;
        padding: 0.75rem 1rem;
        border-bottom: 1px solid var(--border-color);
    }
    
    .modern-table td:last-child {
        border-bottom: none;
        justify-content: flex-end;
    }
    
    .modern-table td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: 0.75rem;
        color: var(--text-light);
        text-transform: uppercase;
        margin-right: 1rem;
    }
}

/* App Layout with Sidebar */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin: 0;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem;
}

.nav-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    margin-bottom: 0.25rem;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, #6366f1 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.nav-item svg {
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 1rem 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    text-decoration: none;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem;
    max-width: calc(100% - 260px);
}

/* Tab Content */
.tab-content {
    display: none;
}

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

/* New status badges */
.status-new {
    background-color: #fef3c7;
    color: #92400e;
}

.status-in-progress {
    background-color: #dbeafe;
    color: #1e40af;
}

.status-finished {
    background-color: #dcfce7;
    color: #166534;
}

/* Status select dropdown */
.status-select {
    padding: 0.375rem 0.625rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: 9999px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    background-color: #f1f5f9;
    color: var(--text-color);
}

.status-select:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.status-select.status-NEW {
    background-color: #fef3c7;
    color: #92400e;
}

.status-select.status-IN_PROGRESS {
    background-color: #dbeafe;
    color: #1e40af;
}

.status-select.status-FINISHED {
    background-color: #dcfce7;
    color: #166534;
}

/* Responsive Sidebar */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        flex-direction: row;
        align-items: center;
        padding: 0.5rem;
    }

    .sidebar-header {
        padding: 0.5rem 1rem;
        border-bottom: none;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }

    .sidebar-nav {
        display: flex;
        gap: 0.5rem;
        padding: 0.5rem;
        flex: 1;
        overflow-x: auto;
    }

    .nav-item {
        padding: 0.5rem 0.75rem;
        white-space: nowrap;
        margin-bottom: 0;
    }

    .sidebar-footer {
        padding: 0.5rem;
        border-top: none;
        border-left: 1px solid rgba(255, 255, 255, 0.1);
    }

    .app-layout {
        flex-direction: column;
    }

    .main-content {
        margin-left: 0;
        max-width: 100%;
        padding: 1rem;
    }
}