/* Ham Radio Network - Shared Style Framework */
/* Consistent design system across all pages */

:root {
    /* Color Palette */
    --ham-primary: #2563eb;
    --ham-secondary: #1e40af;
    --ham-accent: #06b6d4;
    --ham-success: #10b981;
    --ham-warning: #f59e0b;
    --ham-danger: #ef4444;
    --ham-dark: #0f172a;
    --ham-dark-alt: #1e293b;
    --ham-dark-light: #334155;
    --ham-light: #f8fafc;
    --ham-border: rgba(255,255,255,0.1);
    --ham-text: #e2e8f0;
    --ham-text-muted: #94a3b8;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.3);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.4);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
}

/* Base Styles */
* {
    box-sizing: border-box;
    transition: all 0.2s ease-in-out;
}

body {
    font-family: var(--font-family-base);
    background: linear-gradient(135deg, var(--ham-dark) 0%, var(--ham-dark-alt) 100%);
    color: var(--ham-text);
    min-height: 100vh;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Glass Morphism Cards */
.glass-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--ham-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.glass-card-sm {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(15px);
    border: 1px solid var(--ham-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
}

/* Navigation */
.modern-nav {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ham-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

.nav-link {
    color: var(--ham-text-muted) !important;
    font-weight: 500;
    padding: 0.75rem 1.5rem !important;
    border-radius: var(--radius-lg);
    margin: 0 var(--spacing-xs);
    border: 1px solid transparent;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link:hover {
    color: var(--ham-accent) !important;
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.2);
    text-decoration: none;
}

.nav-link.active {
    color: white !important;
    background: linear-gradient(135deg, var(--ham-primary), var(--ham-secondary));
    border-color: var(--ham-primary);
}

/* Buttons */
.btn-ham {
    background: linear-gradient(135deg, var(--ham-primary), var(--ham-secondary));
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-ham:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
    color: white;
    text-decoration: none;
}

.btn-ham-outline {
    background: transparent;
    border: 1px solid var(--ham-primary);
    color: var(--ham-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-ham-outline:hover {
    background: var(--ham-primary);
    color: white;
    text-decoration: none;
}

.btn-ham-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-xs);
}

/* Form Controls */
.form-control-ham {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(51, 65, 85, 0.8);
    border: 1px solid var(--ham-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--ham-text);
    font-family: var(--font-family-base);
}

.form-control-ham:focus {
    outline: none;
    border-color: var(--ham-accent);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
    background: rgba(51, 65, 85, 0.9);
}

.form-control-ham::placeholder {
    color: var(--ham-text-muted);
}

.form-label-ham {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--ham-text);
    font-size: var(--font-size-sm);
}

/* Typography */
.text-ham-primary { color: var(--ham-primary); }
.text-ham-accent { color: var(--ham-accent); }
.text-ham-success { color: var(--ham-success); }
.text-ham-warning { color: var(--ham-warning); }
.text-ham-danger { color: var(--ham-danger); }
.text-ham-muted { color: var(--ham-text-muted); }

.heading-gradient {
    background: linear-gradient(135deg, var(--ham-primary), var(--ham-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

/* Stats Cards */
.stat-card {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    text-align: center;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--ham-accent);
    display: block;
    line-height: 1;
}

.stat-label {
    color: var(--ham-text-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--spacing-sm);
}

/* Callsign Badges */
.callsign-badge {
    background: linear-gradient(135deg, var(--ham-primary), var(--ham-accent));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
}

.callsign-link {
    color: var(--ham-accent) !important;
    text-decoration: none !important;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
}

.callsign-link:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.3);
    text-decoration: none !important;
}

/* Tables */
.table-ham {
    width: 100%;
    color: var(--ham-text);
    background: transparent;
    border-collapse: collapse;
}

.table-ham th {
    background: rgba(37, 99, 235, 0.1);
    color: var(--ham-accent);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.5px;
    border: none;
    padding: var(--spacing-md);
    text-align: left;
}

.table-ham td {
    border-top: 1px solid var(--ham-border);
    padding: var(--spacing-md);
}

.table-ham tbody tr:hover {
    background: rgba(37, 99, 235, 0.05);
}

/* Charts */
.chart-container {
    background: rgba(30, 41, 59, 0.6);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--ham-border);
}

/* Alerts */
.alert-ham {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
}

.alert-ham-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--ham-success);
}

.alert-ham-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--ham-danger);
}

.alert-ham-info {
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.2);
    color: var(--ham-accent);
}

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--ham-border);
    border-radius: 50%;
    border-top-color: var(--ham-accent);
    animation: spin 1s ease-in-out infinite;
    margin-right: var(--spacing-sm);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Status Indicators */
.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: var(--spacing-sm);
}

.status-online {
    background: var(--ham-success);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.status-offline {
    background: var(--ham-text-muted);
}

/* Social Features */
.social-post {
    background: rgba(51, 65, 85, 0.6);
    border: 1px solid var(--ham-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.activity-item {
    padding: var(--spacing-md);
    border-left: 3px solid var(--ham-accent);
    background: rgba(51, 65, 85, 0.3);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-bottom: var(--spacing-sm);
}

.connection-card {
    background: rgba(51, 65, 85, 0.4);
    border: 1px solid var(--ham-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
}

.connection-card:hover {
    background: rgba(51, 65, 85, 0.6);
    transform: translateY(-2px);
}

/* Footer */
.footer-ham {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--ham-border);
    color: var(--ham-text-muted);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
    }
    
    .glass-card {
        padding: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .nav-link {
        padding: 0.5rem 1rem !important;
        margin: 0 0.125rem;
    }
}

/* Utilities */
.d-flex { display: flex; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-none { display: none; }

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

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

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }