/* ========================================
   CFTV Website - Shared CSS Utilities
   Version: 1.0
   Last Updated: January 18, 2025
   ======================================== */

/* ========================================
   CSS Custom Properties (Design System)
   ======================================== */
:root {
    /* Primary Brand Colors */
    --turquoise-primary: #25D0B3;
    --turquoise-light: #3CDCBE;
    --turquoise-medium: #41D4BA;
    --turquoise-dark: #30A794;
    
    /* Secondary Brand Colors */
    --auburn-primary: #A0522D;
    --auburn-light: #CD853F;
    --auburn-dark: #8B4513;
    
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    
    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 25px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-skip-nav: 10000;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Typography Utilities
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

/* ========================================
   Spacing Utilities
   ======================================== */
.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-xs); }
.m-2 { margin: var(--spacing-sm); }
.m-3 { margin: var(--spacing-md); }
.m-4 { margin: var(--spacing-lg); }
.m-5 { margin: 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); }

.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); }

.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); }

/* ========================================
   Layout Utilities
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ========================================
   Navigation Components
   ======================================== */
.nav-links {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
}

.nav-link {
    display: inline-block;
    color: var(--turquoise-primary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(37, 208, 179, 0.1);
    border: 1px solid var(--turquoise-primary);
    border-radius: var(--radius-full);
    margin: var(--spacing-sm);
    transition: all var(--transition-normal);
    font-weight: 600;
    font-size: 0.9rem;
    min-height: 44px;
    min-width: 44px;
}

.nav-link:hover,
.nav-link:focus {
    background: var(--turquoise-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-link:active {
    transform: translateY(0);
}

/* ========================================
   Footer Components
   ======================================== */
.footer-separator {
    border: none;
    height: 3px;
    max-width: 800px;
    margin: var(--spacing-2xl) auto var(--spacing-xl) auto;
    width: 100%;
    background: linear-gradient(90deg, #25e4e0 0%, #25D0B3 100%);
    box-shadow: 0 0 16px 2px #25e4e0, 0 2px 8px 0 rgba(37, 208, 179, 0.12);
    opacity: 0.85;
}

.copyright-line {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

/* ========================================
   Accessibility Components
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-nav {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--turquoise-primary);
    color: var(--bg-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    z-index: var(--z-skip-nav);
    transition: top var(--transition-normal);
}

.skip-nav:focus {
    top: 6px;
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

/* ========================================
   Focus Management
   ======================================== */
*:focus {
    outline: 2px solid var(--turquoise-primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--turquoise-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    *:focus {
        outline: 3px solid var(--text-primary);
        outline-offset: 3px;
    }
}

/* ========================================
   Animation Utilities
   ======================================== */
@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(-10px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.5s ease-out;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ========================================
   Button Components
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 44px;
    min-width: 44px;
    font-size: 1rem;
}

.btn-primary {
    background: var(--turquoise-primary);
    color: var(--bg-primary);
    border-color: var(--turquoise-primary);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--turquoise-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--turquoise-primary);
    border-color: var(--turquoise-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--turquoise-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========================================
   Form Components
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    background: rgba(34, 34, 34, 0.95);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
    min-height: 44px;
}

.form-input:focus {
    border-color: var(--turquoise-primary);
    box-shadow: 0 0 0 3px rgba(37, 208, 179, 0.1);
    outline: none;
}

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

/* ========================================
   Card Components
   ======================================== */
.card {
    background: rgba(20, 20, 20, 0.97);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(37, 208, 179, 0.2);
    padding: var(--spacing-xl);
}

.card-header {
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--turquoise-primary);
    margin-bottom: var(--spacing-sm);
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-link {
        display: block;
        margin: var(--spacing-sm) 0;
        padding: var(--spacing-md) var(--spacing-lg);
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    /* Mobile performance optimizations */
    * {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        user-select: none;
    }
    
    /* Allow text selection in content areas */
    p, h1, h2, h3, h4, h5, h6, span, div {
        -webkit-user-select: text;
        user-select: text;
    }
    
    /* Improve touch targets */
    button, a, input, textarea, select {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Optimize scrolling */
    html, body {
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: none;
    }
    
    /* Prevent zoom on form inputs */
    input, textarea, select {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-md);
        font-size: 0.9rem;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .skip-nav,
    .nav-links,
    .footer-separator,
    .floating-orbs,
    .bg-animation {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        background: white !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
    }
}

/* ========================================
   Reduced Motion Support
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ========================================
   High Contrast Mode Support
   ======================================== */
@media (prefers-contrast: high) {
    :root {
        --turquoise-primary: #00ff00;
        --turquoise-light: #00ff00;
        --text-primary: #ffffff;
        --text-secondary: #ffffff;
        --bg-primary: #000000;
    }
    
    .card {
        border: 2px solid var(--text-primary);
    }
    
    .btn {
        border-width: 2px;
    }
}

/* ========================================
   Dark Mode Support (Future-proofing)
   ======================================== */
@media (prefers-color-scheme: dark) {
    :root {
        /* Already optimized for dark mode */
    }
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #ffffff;
        --bg-secondary: #f5f5f5;
        --bg-tertiary: #e5e5e5;
        --text-primary: #000000;
        --text-secondary: #333333;
        --text-muted: #666666;
    }
    
    .card {
        background: rgba(255, 255, 255, 0.97);
        border: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .form-input {
        background: rgba(255, 255, 255, 0.95);
        color: var(--text-primary);
        border-color: rgba(0, 0, 0, 0.1);
    }
}