/* 
   Desktop Responsive Styles
   Danborough Group of Colleges
   Author: GitHub Copilot
   Date: July 24, 2025
*/

/* ====================================
   DESKTOP BREAKPOINTS & CONTAINERS
   ==================================== */

/* Large Desktop (1400px and up) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
        margin: 0 auto;
        padding: 0 20px;
    }
    
    .hero-tagline {
        font-size: 4rem;
        line-height: 1.1;
    }
    
    .hero-subtext {
        font-size: 1.4rem;
        max-width: 600px;
    }
    
    .section-header h2 {
        font-size: 3.5rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
    }
    
    .programs-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
    }
}

/* Standard Desktop (1200px - 1399px) */
@media (min-width: 1200px) and (max-width: 1399px) {
    .container {
        max-width: 1140px;
        margin: 0 auto;
        padding: 0 20px;
    }
    
    .hero-tagline {
        font-size: 3.5rem;
        line-height: 1.2;
    }
    
    .hero-subtext {
        font-size: 1.25rem;
        max-width: 550px;
    }
    
    .section-header h2 {
        font-size: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
    
    .programs-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .about-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }
    
    .join-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }
}

/* Medium Desktop (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .container {
        max-width: 960px;
        margin: 0 auto;
        padding: 0 20px;
    }
    
    .hero-tagline {
        font-size: 3rem;
        line-height: 1.2;
    }
    
    .hero-subtext {
        font-size: 1.2rem;
        max-width: 500px;
    }
    
    .section-header h2 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .programs-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .about-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        align-items: center;
    }
    
    .join-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        align-items: center;
    }
    
    /* Navigation adjustments */
    .hero-nav-left,
    .hero-nav-right {
        margin: 0 15px;
    }
    
    .hero-nav-left li,
    .hero-nav-right li {
        margin: 0 8px;
    }
    
    .dropdown-menu {
        min-width: 220px;
    }
}

/* ====================================
   DESKTOP LAYOUT OPTIMIZATIONS
   ==================================== */

@media (min-width: 992px) {
    /* Hero Section Desktop Layout */
    #hero {
        min-height: 100vh;
        display: flex;
        align-items: center;
    }
    
    .hero-background {
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
        min-height: 100vh;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        justify-content: center;
        min-height: 100vh;
        position: relative;
    }
    
    /* Features Section Desktop */
    #features {
        padding: 120px 0;
    }
    
    .feature-box {
        padding: 40px 30px;
        text-align: center;
        background: white;
        border-radius: 20px;
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
        overflow: hidden;
    }
    
    .feature-box::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        transition: left 0.5s ease;
    }
    
    .feature-box:hover::before {
        left: 0;
    }
    
    .feature-box:hover {
        transform: translateY(-15px);
        box-shadow: 0 25px 60px rgba(30, 136, 41, 0.2);
    }
    
    /* About Section Desktop */
    #about {
        padding: 120px 0;
        background: linear-gradient(135deg, rgba(248, 249, 250, 0.9), rgba(255, 255, 255, 0.9)), url('../images/campus2.jpg');
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
    }
    
    .about-image img {
        border-radius: 20px;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
        transition: transform 0.5s ease;
    }
    
    .about-image:hover img {
        transform: scale(1.05);
    }
    
    /* Programs Section Desktop */
    #programs {
        padding: 120px 0;
        background: linear-gradient(135deg, rgba(30, 136, 41, 0.95), rgba(0, 153, 0, 0.9)), url('../images/campus3.jpg');
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
    }
    
    .program-card {
        background: white;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
    }
    
    .program-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 6px;
        background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        transform: scaleX(0);
        transition: transform 0.4s ease;
    }
    
    .program-card:hover::before {
        transform: scaleX(1);
    }
    
    .program-card:hover {
        transform: translateY(-10px) scale(1.02);
        box-shadow: 0 30px 70px rgba(30, 136, 41, 0.25);
    }
    
    /* Newsletter Section Desktop */
    #newsletter {
        padding: 120px 0;
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
    }
    
    .newsletter-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }
    
    /* Join Section Desktop */
    #join-danborough {
        padding: 120px 0;
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
    }
    
    .join-image img {
        border-radius: 20px;
        box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
        transition: transform 0.5s ease;
    }
    
    .join-image:hover img {
        transform: scale(1.03) rotate(1deg);
    }
    
    /* Footer Desktop */
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: 80px;
        align-items: start;
    }
}

/* ====================================
   DESKTOP TYPOGRAPHY
   ==================================== */

@media (min-width: 992px) {
    .hero-tagline {
        font-weight: 800;
        text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
        letter-spacing: -0.02em;
    }
    
    .section-header h2 {
        font-weight: 700;
        letter-spacing: -0.01em;
        margin-bottom: 20px;
    }
    
    .section-header p {
        font-size: 1.2rem;
        color: rgba(51, 51, 51, 0.8);
        max-width: 600px;
        margin: 0 auto;
    }
    
    .feature-box h3 {
        font-size: 1.5rem;
        font-weight: 600;
        margin: 20px 0 15px;
        color: var(--text-color);
    }
    
    .feature-box p {
        font-size: 1rem;
        line-height: 1.7;
        color: rgba(51, 51, 51, 0.8);
    }
}

/* ====================================
   DESKTOP ANIMATIONS & EFFECTS
   ==================================== */

@media (min-width: 992px) {
    /* Parallax scrolling effect */
    .parallax-element {
        transform: translateZ(0);
        will-change: transform;
    }
    
    /* Smooth scrolling behavior */
    html {
        scroll-behavior: smooth;
    }
    
    /* Enhanced hover effects for buttons */
    .btn-primary,
    .btn-secondary,
    .btn-apply {
        position: relative;
        overflow: hidden;
        z-index: 1;
    }
    
    .btn-primary::before,
    .btn-secondary::before,
    .btn-apply::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        transition: left 0.5s ease;
        z-index: -1;
    }
    
    .btn-primary:hover::before,
    .btn-secondary:hover::before,
    .btn-apply:hover::before {
        left: 100%;
    }
    
    /* Desktop-specific animations */
    .desktop-fade-in {
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .desktop-fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }
    
    .desktop-slide-left {
        opacity: 0;
        transform: translateX(-50px);
        transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .desktop-slide-left.visible {
        opacity: 1;
        transform: translateX(0);
    }
    
    .desktop-slide-right {
        opacity: 0;
        transform: translateX(50px);
        transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .desktop-slide-right.visible {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ====================================
   DESKTOP PERFORMANCE OPTIMIZATIONS
   ==================================== */

@media (min-width: 992px) {
    /* Hardware acceleration for smooth animations */
    .feature-box,
    .program-card,
    .about-image img,
    .join-image img {
        transform: translateZ(0);
        backface-visibility: hidden;
        perspective: 1000px;
    }
    
    /* Optimize rendering */
    .hero-background,
    #about,
    #programs,
    #newsletter,
    #join-danborough {
        transform: translate3d(0, 0, 0);
    }
    
    /* Preload critical images */
    .preload-desktop {
        content: url('../images/hero1.jpg') url('../images/campus1.jpg') url('../images/campus2.jpg') url('../images/campus3.jpg') url('../images/campus4.jpg');
        display: none;
    }
}

/* ====================================
   DESKTOP ACCESSIBILITY ENHANCEMENTS
   ==================================== */

@media (min-width: 992px) {
    /* Enhanced focus indicators for desktop */
    .feature-box:focus-within,
    .program-card:focus-within {
        outline: 3px solid var(--secondary-color);
        outline-offset: 4px;
    }
    
    /* Reduced motion preferences */
    @media (prefers-reduced-motion: reduce) {
        .hero-background,
        #about,
        #programs,
        #newsletter,
        #join-danborough {
            background-attachment: scroll;
        }
        
        .feature-box,
        .program-card,
        .about-image img,
        .join-image img {
            transition: none;
        }
        
        .desktop-fade-in,
        .desktop-slide-left,
        .desktop-slide-right {
            transition: none;
            opacity: 1;
            transform: none;
        }
    }
    
    /* High contrast mode support */
    @media (prefers-contrast: high) {
        .feature-box,
        .program-card {
            border: 2px solid var(--primary-color);
        }
        
        .hero-background,
        #about,
        #programs,
        #newsletter,
        #join-danborough {
            background-image: none;
            background-color: var(--white);
            color: var(--text-color);
        }
    }
}

/* ====================================
   DESKTOP GRID SYSTEMS
   ==================================== */

@media (min-width: 992px) {
    .desktop-grid-2 {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .desktop-grid-3 {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
    }
    
    .desktop-grid-4 {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
    }
    
    .desktop-flex-center {
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .desktop-flex-between {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .desktop-flex-column {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
}