/**
 * EXCELLEDGE TRAINING - RESPONSIVE STYLESHEET
 * Version 1.0 | February 2025
 * 
 * This stylesheet handles all responsive breakpoints and mobile/tablet
 * adjustments following a mobile-first approach.
 * 
 * Breakpoints:
 * - Mobile: Default (320px+)
 * - Tablet: 768px+
 * - Desktop: 1024px+
 * - Large Desktop: 1200px+
 */

/* ============================================
   MOBILE FIRST - BASE STYLES
   (Already defined in main.css for mobile)
   ============================================ */

/* ============================================
   MOBILE SPECIFIC (< 768px)
   ============================================ */

@media (max-width: 767px) {
    
    /* Typography Adjustments */
	
	.ai-era-grid {
    grid-template-columns: 1fr !important;
	}
	
    :root {
        --font-size-5xl: 2rem;      /* H1: 48px ? 32px */
        --font-size-4xl: 1.75rem;   /* H2: 40px ? 28px */
        --font-size-3xl: 1.5rem;    /* H3: 32px ? 24px */
    }
    
    /* Container Padding */
    .container {
        padding: 0 var(--spacing-2);
    }
    
    /* Section Spacing */
    .section {
        padding: var(--spacing-6) 0;
    }
    
    .section-large {
        padding: var(--spacing-8) 0;
    }
    
    /* Navigation - Mobile Menu */
    .nav-container {
        min-height: 64px;
        padding: var(--spacing-2);
    }
    
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-4);
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        max-height: 500px;
        opacity: 1;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--color-gray-200);
    }
    
    .nav-menu a {
        display: block;
        padding: var(--spacing-2) 0;
        border-bottom: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    /* Dropdown in Mobile */
    .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 var(--spacing-3);
        margin-top: var(--spacing-1);
        display: none;
    }
    
    .nav-dropdown.active .nav-dropdown-menu {
        display: block;
    }
    
    .nav-dropdown-toggle::after {
        content: ' ?';
    }
    
    .nav-dropdown.active .nav-dropdown-toggle::after {
        content: ' ?';
    }
    
    /* Hero Section */
    .hero {
        padding: var(--spacing-8) var(--spacing-3);
    }
    
    .hero-tagline {
        font-size: var(--font-size-lg);
    }
    
    .hero h1 {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    /* Page Header */
    .page-header {
        padding: var(--spacing-6) var(--spacing-3);
    }
    
    .page-header h1 {
        font-size: var(--font-size-3xl);
    }
    
    .page-header p {
        font-size: var(--font-size-sm);
    }
    
    /* Section Headers */
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-sm);
    }
    
    /* Buttons */
    .btn-large {
        padding: 0.875rem 2rem;
        font-size: var(--font-size-sm);
    }
    
    /* Cards */
    .card {
        padding: var(--spacing-3);
    }
    
    .card-title {
        font-size: var(--font-size-lg);
    }
    
    /* Grids - Stack on Mobile */
    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }
    
    /* Icon Circles */
    .icon-circle {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-xl);
    }
    
    /* Accordion */
    .accordion-item {
        margin-bottom: var(--spacing-2);
    }
    
    .accordion-header {
        padding: var(--spacing-3);
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .accordion-title {
        font-size: var(--font-size-xl);
    }
    
    .accordion-description {
        font-size: var(--font-size-sm);
    }
    
    .accordion-icon {
        font-size: var(--font-size-2xl);
        align-self: flex-end;
    }
    
    .accordion-body {
        padding: var(--spacing-3);
    }
    
    /* CTA Box */
    .cta-box {
        padding: var(--spacing-3);
    }
    
    .cta-box-title {
        font-size: var(--font-size-lg);
    }
    
    /* Final CTA */
    .final-cta {
        padding: var(--spacing-6) var(--spacing-3);
    }
    
    .final-cta h2 {
        font-size: var(--font-size-2xl);
    }
    
    .final-cta p {
        font-size: var(--font-size-sm);
    }
    
    /* Credibility Strip */
    .credibility-strip {
        padding: var(--spacing-3);
    }
    
    .credibility-content {
        gap: var(--spacing-4);
        flex-direction: column;
    }
    
    .credibility-item {
        font-size: var(--font-size-base);
    }
    
    /* Forms */
    .form-input,
    .form-textarea,
    .form-select {
        padding: 0.625rem 0.875rem;
        font-size: var(--font-size-sm);
    }
    
    /* Footer */
    .footer {
        padding: var(--spacing-5) var(--spacing-3) var(--spacing-2);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-5);
    }
    
    /* Utility Spacing Adjustments */
    .mb-8 { margin-bottom: var(--spacing-6); }
    .mt-8 { margin-top: var(--spacing-6); }
}

/* ============================================
   TABLET (768px - 1023px)
   ============================================ */

@media (min-width: 768px) and (max-width: 1023px) {
    
    /* Container */
    .container {
        padding: 0 var(--spacing-3);
    }
    
    /* Navigation */
    .nav-container {
        padding: var(--spacing-2) var(--spacing-3);
    }
    
    .nav-menu {
        gap: var(--spacing-3);
    }
    
    /* Hero */
    .hero {
        padding: var(--spacing-8) var(--spacing-4);
    }
    
    /* Grids - Adjust Columns */
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-5 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   DESKTOP (1024px+)
   ============================================ */

@media (min-width: 1024px) {
    
    /* Hero - Can increase size if desired */
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    /* Grids - Full Power */
    .grid-5 {
        grid-template-columns: repeat(5, 1fr);
    }
    
    /* Accordion - Can have side-by-side content if needed */
    .accordion-header {
        gap: var(--spacing-6);
    }
}

/* ============================================
   LARGE DESKTOP (1200px+)
   ============================================ */

@media (min-width: 1200px) {
    
    /* Container - Max Width Reached */
    .container {
        padding: 0 var(--spacing-4);
    }
    
    /* Typography - Can go larger if desired */
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    /* More spacing for large screens */
    .section-large {
        padding: 6rem 0;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    
    /* Hide Navigation */
    .navbar,
    .nav-toggle,
    .footer {
        display: none;
    }
    
    /* Simplify Colors for Print */
    body {
        color: #000;
        background: #fff;
    }
    
    /* Remove Shadows and Transitions */
    * {
        box-shadow: none !important;
        transition: none !important;
    }
    
    /* Ensure Links are Visible */
    a {
        text-decoration: underline;
    }
    
    /* Page Breaks */
    .section {
        page-break-inside: avoid;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
}

/* ============================================
   ACCESSIBILITY - REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */

@media (prefers-contrast: high) {
    
    /* Increase border thickness */
    .card-bordered,
    .accordion-item,
    .form-input,
    .form-textarea {
        border-width: 3px;
    }
    
    /* Stronger focus indicators */
    .form-input:focus,
    .form-textarea:focus {
        box-shadow: 0 0 0 4px rgba(28, 68, 127, 0.3);
    }
}

/* ============================================
   LANDSCAPE ORIENTATION (Mobile/Tablet)
   ============================================ */

@media (max-width: 1023px) and (orientation: landscape) {
    
    /* Reduce vertical padding in landscape */
    .hero,
    .page-header {
        padding-top: var(--spacing-5);
        padding-bottom: var(--spacing-5);
    }
    
    .section {
        padding: var(--spacing-5) 0;
    }
}

/* ============================================
   TOUCH DEVICE OPTIMIZATIONS
   ============================================ */

@media (hover: none) and (pointer: coarse) {
    
    /* Increase tap targets */
    .btn,
    .nav-menu a,
    .accordion-header {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Remove hover-only effects on touch devices */
    .card-elevated:hover,
    .card-bordered:hover,
    .accordion-item:hover {
        transform: none;
    }
    
    /* Keep focus states for accessibility */
    .btn:focus,
    .nav-menu a:focus {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }
}

/* ============================================
   EXTRA SMALL DEVICES (< 400px)
   ============================================ */

@media (max-width: 399px) {
    
    /* Further reduce font sizes */
    .hero h1 {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    /* Adjust padding */
    .container {
        padding: 0 var(--spacing-2);
    }
    
    .card,
    .accordion-header,
    .accordion-body {
        padding: var(--spacing-2);
    }
    
    /* Stack credibility items */
    .credibility-content {
        gap: var(--spacing-2);
    }
}

/* ============================================
   END OF RESPONSIVE STYLESHEET
   ============================================ */