/* XPA Main CSS - Mesoflow Design System */

:root {
    --primary-blue: #0A4D68;
    --accent-teal: #05BFDB;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
    --gray-text: #666;
    --border-color: #e0e0e0;
    --success-green: #27ae60;
    --warning-yellow: #f39c12;
    --danger-red: #e74c3c;
    --card-shadow: 0 2px 8px rgba(0,0,0,0.1);
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --border-radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

/* Navigation */
.top-nav {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #0d5c7a 100%);
    color: white;
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    font-weight: 500;
}

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

.nav-link.active {
    background-color: var(--accent-teal);
    color: white;
}

/* Main Content */
#main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--accent-teal);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #0d5c7a;
}

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

.btn-secondary:hover {
    background: #04a6c2;
}

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

.btn-danger:hover {
    background: #c0392b;
}

.btn-sm {
    padding: 4px 12px;
    font-size: 12px;
}

/* Forms */
input, textarea, select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    margin-bottom: var(--spacing-sm);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent-teal);
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--dark-text);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: var(--success-green);
    color: white;
}

.badge-warning {
    background: var(--warning-yellow);
    color: white;
}

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

.badge-info {
    background: var(--accent-teal);
    color: white;
}

/* Loading */
.loading {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--gray-text);
}

.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-teal);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: var(--spacing-lg) auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility Classes */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.text-center { text-align: center; }
.text-right { text-align: right; }

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

.hidden { display: none; }