:root {
    --bg-primary: #0A0F1D;
    --bg-secondary: #131B2F;
    --bg-tertiary: #1C2741;
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --accent: #3B82F6;
    --accent-hover: #2563EB;
    --danger: #EF4444;
    --danger-hover: #DC2626;
    --success: #10B981;
    --success-hover: #059669;
    --border: #2D3748;
    --gold: #D4AF37;
    --gold-hover: #B5952F;
    --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Buttons */
.btn {
    display: inline-block;
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

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

.btn-gold {
    background-color: var(--gold);
    color: #000;
    font-weight: 600;
}

.btn-gold:hover {
    background-color: var(--gold-hover);
    color: #000;
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: var(--font-family);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    color: var(--text-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* Card */
.card {
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Navbar */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.05em;
}

.navbar-nav {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--text-primary);
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

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

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Client Page Specific */
.client-container {
    max-width: 600px;
    margin: 4rem auto;
    padding: 0 1rem;
}

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

.client-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 0.5rem;
}

.client-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.client-details {
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
    padding: 2rem;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.detail-item {
    display: flex;
    margin-bottom: 1rem;
}
.detail-item:last-child {
    margin-bottom: 0;
}

.detail-label {
    width: 120px;
    font-weight: 600;
    color: var(--text-secondary);
}

.detail-value {
    flex: 1;
    font-weight: 500;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    background: white;
    border-radius: 0.5rem;
    margin: 0 auto 1.5rem auto;
    width: max-content;
}

.qr-code-container canvas {
    display: block;
}

/* Login Page Specific */
.login-container {
    max-width: 400px;
    margin: 4rem auto;
    padding: 0 1rem;
}

.alert {
    padding: 1rem;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #F87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: #34D399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Layout Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
}