/**
 * CRITICAL RESPONSIVE FIXES & IMPROVEMENTS
 * Fixes scroll bugs, navigation issues, and responsive layout problems
 */

/* ===================================
   CRITICAL: Fix Scroll Jump Bug
   =================================== */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    overflow-x: hidden;
    position: relative;
    width: 100%;
}

/* Disable any conflicting scroll animations */
* {
    scroll-snap-type: none !important;
}

/* Fix smooth scrolling conflicts */
.hero-section,
.features-section,
.about-section,
.academics-section,
.contact-section,
.download-section,
.why-choose-section,
.tech-stack-section,
.facilities-section,
.placement-section {
    scroll-snap-align: none !important;
    scroll-margin-top: 80px;
}

/* ===================================
   NAVIGATION BAR - Fixed & Responsive
   =================================== */
.navbar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    transform: none !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    border-radius: 0 !important;
    z-index: 1000 !important;
    padding: 1rem 2rem;
    background: rgba(15, 23, 42, 0.95) !important;
    backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Navbar scrolled state */
.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo adjustments */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    z-index: 1002;
}

.logo-img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: contain;
    background: white;
    padding: 3px;
}

/* ===================================
   MOBILE MENU - Fixed Hamburger
   =================================== */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
    position: relative;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

/* Hamburger animation */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
}

/* Mobile navigation overlay */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-overlay.active {
    display: block;
    opacity: 1;
}

/* ===================================
   HERO SECTION - Responsive & Fixed
   =================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px !important;
    padding-bottom: 60px;
    position: relative;
    overflow: visible;
}

.hero-section .container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-badge {
    display: inline-flex !important;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    margin-bottom: 1rem;
    backdrop-filter: blur(10px);
    width: fit-content;
}

.badge-text {
    font-size: clamp(0.7rem, 1.5vw, 0.9rem);
    font-weight: 600;
    line-height: 1.4;
    white-space: normal;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem) !important;
    line-height: 1.2;
    margin: 0 0 1rem 0;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    margin-bottom: 1rem;
}

.hero-description {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-buttons .btn {
    padding: 1rem 2rem;
    font-size: 1rem;
    white-space: nowrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    padding: 1.5rem;
    text-align: center;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: clamp(0.75rem, 1.5vw, 0.9rem);
    color: var(--text-muted);
}

/* ===================================
   RESPONSIVE BREAKPOINTS
   =================================== */

/* Tablets and small laptops (768px - 1024px) */
@media (max-width: 1024px) {
    .navbar {
        padding: 0.75rem 1.5rem;
    }

    .hero-section .container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-content {
        align-items: center;
    }

    .hero-badge {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1rem;
    }

    .hero-logo-container {
        max-width: 350px;
        height: 350px;
    }
}

/* Mobile devices (max-width: 768px) */
@media (max-width: 768px) {
    /* Navigation */
    .navbar {
        padding: 0.75rem 1rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: -100%;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 5rem 1.5rem 2rem;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        z-index: 1000;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
        align-items: flex-start !important;
        gap: 0.5rem !important;
    }

    .nav-links.active,
    .nav-links.mobile-open {
        left: 0 !important;
        display: flex !important;
    }

    .nav-links a,
    .nav-links .btn {
        width: 100%;
        margin: 0 0 0.75rem 0;
        justify-content: flex-start;
        text-align: left;
        padding: 1rem 1.5rem;
        border-radius: 12px;
    }

    .mobile-menu-btn {
        display: flex !important;
    }

    /* Hero Section */
    .hero-section {
        min-height: auto;
        padding-top: 90px !important;
        padding-bottom: 40px;
    }

    .hero-section .container {
        padding: 0 1rem;
        gap: 2rem;
    }

    .hero-content {
        text-align: center;
        align-items: center;
    }

    .hero-badge {
        padding: 0.5rem 1rem;
        max-width: 95%;
    }

    .badge-text {
        font-size: 0.7rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem !important;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }

    .hero-buttons .btn {
        width: 100%;
        padding: 0.875rem 1.5rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .stat-item {
        padding: 1rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .hero-logo-container {
        max-width: 280px;
        height: 280px;
        margin-top: 2rem;
    }

    /* All grid sections */
    .features-grid,
    .why-choose-grid,
    .tech-features,
    .facilities-grid,
    .academics-grid,
    .contact-grid,
    .download-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem;
    }

    /* Sections */
    .features-section,
    .download-section,
    .about-section,
    .academics-section,
    .contact-section,
    .why-choose-section,
    .tech-stack-section,
    .facilities-section,
    .placement-section {
        padding: 2rem 0;
        margin: 1.5rem 0;
    }

    .section-header {
        margin-bottom: 1.5rem;
    }

    .section-title {
        font-size: 1.75rem !important;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Cards */
    .feature-card,
    .why-card,
    .tech-feature-item,
    .facility-card,
    .academic-card,
    .contact-card,
    .download-card {
        padding: 1.5rem;
    }

    /* Placement */
    .placement-stats {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 1rem;
    }

    .placement-stat {
        padding: 1rem;
    }

    .placement-stat h3 {
        font-size: 1.75rem;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr !important;
        gap: 2rem;
    }

    /* Theme Toggle */
    .theme-toggle {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
}

/* Small mobile devices (max-width: 480px) */
@media (max-width: 480px) {
    .navbar {
        padding: 0.5rem 0.75rem;
    }

    .logo-img {
        width: 38px;
        height: 38px;
    }

    .nav-logo {
        font-size: 1.25rem;
    }

    .hero-section {
        padding-top: 80px !important;
    }

    .hero-title {
        font-size: 1.75rem !important;
    }

    .hero-stats {
        grid-template-columns: 1fr !important;
    }

    .stat-item {
        padding: 0.75rem;
    }
}

/* ===================================
   LANDSCAPE MODE FIXES
   =================================== */
@media (max-width: 900px) and (orientation: landscape) {
    .hero-section {
        min-height: auto;
        padding: 2rem 0;
    }

    .hero-section .container {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .hero-logo-container {
        max-width: 250px;
        height: 250px;
    }

    .hero-stats {
        grid-template-columns: repeat(5, 1fr);
        gap: 0.75rem;
    }

    .stat-item {
        padding: 0.5rem;
    }
}

/* ===================================
   SMOOTH SCROLLING FIX
   =================================== */
@supports (scroll-behavior: smooth) {
    html {
        scroll-behavior: smooth;
    }
}

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

/* ===================================
   SAFE AREA INSETS (iPhone Notch)
   =================================== */
@supports (padding: env(safe-area-inset-bottom)) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }

    .navbar {
        padding-left: calc(2rem + env(safe-area-inset-left));
        padding-right: calc(2rem + env(safe-area-inset-right));
    }
}

/* ===================================
   TOUCH-FRIENDLY IMPROVEMENTS
   =================================== */
@media (max-width: 768px) {
    /* Minimum tap targets (44x44px) */
    button,
    a.btn,
    .nav-link,
    input[type="button"],
    input[type="submit"] {
        min-height: 44px;
        min-width: 44px;
    }

    /* Prevent zoom on input focus (iOS) */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    select,
    textarea {
        font-size: 16px !important;
    }

    /* Better spacing for touch */
    .feature-card,
    .why-card,
    .academic-card {
        margin-bottom: 1rem;
    }

    /* Remove hover effects on touch devices */
    .hover-lift:hover,
    .hover-tilt:hover {
        transform: none;
    }

    .hover-lift:active,
    .hover-tilt:active {
        transform: scale(0.98);
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */
@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }

    .show-mobile {
        display: block !important;
    }

    .text-center-mobile {
        text-align: center !important;
    }

    .w-100-mobile {
        width: 100% !important;
    }
}

/* ===================================
   PREVENT CONTENT OVERFLOW
   =================================== */
.hero-section,
.features-section,
.about-section,
.academics-section,
.contact-section,
.download-section,
.why-choose-section,
.tech-stack-section,
.facilities-section,
.placement-section,
.footer {
    overflow-x: hidden;
    position: relative;
    width: 100%;
}

/* Ensure no element causes horizontal scroll */
* {
    max-width: 100%;
}

img {
    max-width: 100%;
    height: auto;
}

/* ===================================
   ABOUT CREATOR SECTION STYLING
   =================================== */
.about-creator-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    position: relative;
}

.about-creator-section .container {
    max-width: 900px;
}

.creator-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow: 0 8px 32px var(--glass-shadow);
}

.creator-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.creator-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.creator-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.creator-info p {
    font-size: 1rem;
    color: var(--text-primary);
    margin: 0;
}

.creator-info strong {
    color: var(--primary);
}

.creator-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.creator-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
}

.creator-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.creator-link-icon {
    font-size: 1.25rem;
}

.back-to-top-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all var(--transition-base);
    margin-top: 1rem;
}

.back-to-top-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

@media (max-width: 768px) {
    .creator-content {
        padding: 2rem 1.5rem;
    }

    .creator-title {
        font-size: 1.5rem;
    }

    .creator-description {
        font-size: 1rem;
    }

    .creator-links {
        flex-direction: column;
        gap: 0.75rem;
    }

    .creator-link {
        width: 100%;
        justify-content: center;
    }
}