/* ============================================
   CSS Variables - Design System
   ============================================ */
:root {
    /* Spacing Scale (8px base unit) */
    --sp-xs: 0.25rem;   /* 4px */
    --sp-sm: 0.5rem;    /* 8px */
    --sp-md: 1rem;      /* 16px */
    --sp-lg: 1.5rem;    /* 24px */
    --sp-xl: 2rem;      /* 32px */
    --sp-2xl: 3rem;     /* 48px */
    --sp-3xl: 4rem;     /* 64px */

    /* Brand Colors (itestra) */
    --color-primary: #009ee2;
    --color-primary-dark: #007ab3;
    --color-secondary: #311b2a;
    --color-secondary-dark: #1f111a;
    --color-tertiary: #7c6eb0;

    /* Status Colors */
    --color-danger: #f56565;
    --color-danger-dark: #e53e3e;
    --color-danger-light: #fed7d7;
    --color-danger-text: #742a2a;
    --color-success: #48bb78;
    --color-success-light: #c6f6d5;
    --color-success-dark: #22543d;
    --color-warning: #ed8936;
    --color-warning-light: #fef5e7;
    --color-warning-dark: #c05621;

    /* Neutral Colors */
    --color-text-primary: #000000;
    --color-text-secondary: #676767;
    --color-text-muted: #999999;
    --color-bg-light: #f8f8f8;
    --color-bg-info: #f0f0f0;
    --color-border: #e0e0e0;

    /* Typography Scale */
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.25rem;     /* 20px */
    --text-xl: 1.75rem;     /* 28px */
}

/* ============================================
   Reset and Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f7f7f7;
    min-height: 100vh;
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: var(--text-base);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--sp-xl);
}

/* ============================================
   Card Component System
   ============================================ */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card-sm {
    padding: var(--sp-lg);
}

.card-lg {
    padding: var(--sp-xl);
}

.card-xl {
    padding: var(--sp-2xl);
}

/* ============================================
   Login Page
   ============================================ */
.login-card {
    text-align: center;
    max-width: 450px;
    margin: var(--sp-3xl) auto;
}

.logo {
    color: var(--color-primary);
    margin-bottom: var(--sp-lg);
}

.login-card h1 {
    font-size: var(--text-xl);
    margin-bottom: var(--sp-sm);
    color: var(--color-text-primary);
}

.subtitle {
    color: var(--color-text-muted);
    margin-bottom: var(--sp-xl);
}

.login-content {
    margin-top: var(--sp-xl);
}

.description {
    color: var(--color-text-secondary);
    margin-bottom: var(--sp-xl);
    line-height: 1.6;
}

/* ============================================
   Alert System
   ============================================ */
.alert {
    padding: var(--sp-md);
    border-radius: 6px;
    margin-bottom: var(--sp-md);
    border-left: 4px solid;
}

.alert-info {
    background: var(--color-bg-info);
    border-left-color: var(--color-primary);
    color: var(--color-text-secondary);
}

.alert-warning {
    background: var(--color-warning-light);
    border-left-color: var(--color-warning);
    color: #744210;
}

/* Legacy alias for info-box */
.info-box {
    background: var(--color-bg-info);
    border-left: 4px solid var(--color-primary);
    padding: var(--sp-md);
    margin-top: var(--sp-xl);
    text-align: left;
    border-radius: 4px;
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-xl);
}

.header-left h1 {
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    margin-bottom: var(--sp-xs);
}

.user-email {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* User Info Card */
.user-info-card {
    margin-bottom: var(--sp-xl);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--sp-lg);
}

.info-item label {
    display: block;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--sp-sm);
}

.info-item span {
    display: block;
    color: var(--color-text-primary);
    font-size: var(--text-sm);
}

.mono {
    font-family: 'Courier New', monospace;
}

/* ============================================
   Keys Section
   ============================================ */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-lg);
}

.section-header h2 {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
}

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

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

.keys-table thead {
    background: var(--color-bg-light);
}

.keys-table th {
    padding: var(--sp-sm) var(--sp-sm);
    text-align: left;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    border-bottom: 2px solid var(--color-border);
}

.keys-table td {
    padding: var(--sp-md) var(--sp-sm);
    border-bottom: 1px solid var(--color-border);
}

.keys-table tr:hover {
    background: var(--color-bg-light);
}

.keys-table tr.expired {
    opacity: 0.6;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--sp-2xl) var(--sp-md);
    color: var(--color-text-muted);
}

.empty-state svg {
    margin-bottom: var(--sp-md);
}

.empty-state h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--sp-sm);
}

.empty-state p {
    margin-bottom: var(--sp-lg);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: var(--sp-sm) var(--sp-lg);
    border: none;
    border-radius: 6px;
    font-size: var(--text-base);
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn:hover {
    box-shadow: 0 4px 12px rgba(0, 158, 226, 0.4);
}

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

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

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

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

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

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

.btn-sm {
    padding: var(--sp-sm) var(--sp-sm);
    font-size: var(--text-sm);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================
   Badge
   ============================================ */
.badge {
    display: inline-block;
    padding: var(--sp-xs) var(--sp-sm);
    border-radius: 12px;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success-dark);
}

.badge-warning {
    background: var(--color-warning-light);
    color: var(--color-warning-dark);
}

.badge-danger {
    background: var(--color-danger-light);
    color: var(--color-danger-text);
}

/* ============================================
   Modal
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.modal-header h2 {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-muted);
    cursor: pointer;
    line-height: 1;
}

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

.modal-body {
    padding: var(--sp-lg);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--sp-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--sp-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--sp-sm);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: var(--text-base);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 158, 226, 0.1);
}

/* ============================================
   Key Display
   ============================================ */
.key-display {
    display: flex;
    gap: var(--sp-sm);
    margin: var(--sp-md) 0;
}

.key-input {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: var(--text-sm);
    padding: var(--sp-sm);
    border: 2px solid var(--color-primary);
    border-radius: 6px;
    background: var(--color-bg-light);
}

/* ============================================
   Utilities
   ============================================ */
.text-muted {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

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

/* ============================================
   Footer
   ============================================ */
footer {
    text-align: center;
    padding: var(--sp-xl) 0;
    color: var(--color-text-muted);
}

footer a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .container {
        padding: var(--sp-md);
    }

    .dashboard-header {
        flex-direction: column;
        gap: var(--sp-md);
        text-align: center;
    }

    .section-header {
        flex-direction: column;
        gap: var(--sp-md);
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .keys-table {
        font-size: var(--text-sm);
    }

    .keys-table th,
    .keys-table td {
        padding: var(--sp-sm);
    }
}