/* AI for India's Future - Modern CSS Styles */

/* ===============================================
   GLOBAL STYLES & VARIABLES
   =============================================== */

:root {
    --primary: #facc15;
    --secondary: #fb923c;
    --dark: #0f172a;
    --light: #e2e8f0;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.7;
    overflow-x: hidden;
}

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

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.hero-title {
    background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 40px rgba(250, 204, 21, 0.3);
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { text-shadow: 0 0 40px rgba(250, 204, 21, 0.3); }
    100% { text-shadow: 0 0 60px rgba(250, 204, 21, 0.5), 0 0 80px rgba(251, 146, 60, 0.3); }
}

/* ===============================================
   NAVIGATION
   =============================================== */

#navbar {
    background: rgba(15, 23, 42, 0.1);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

#navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(250, 204, 21, 0.2);
    box-shadow: var(--shadow-xl);
}

.nav-link {
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

#mobile-menu {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#mobile-menu.show {
    transform: translateY(0);
}

/* ===============================================
   PROGRESS BAR
   =============================================== */

#progress-bar {
    width: 0%;
    transition: width 0.1s ease;
}

/* ===============================================
   BUTTONS
   =============================================== */

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--dark);
    font-weight: 600;
    border-radius: 0.75rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    font-size: 1rem;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(250, 204, 21, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    background: transparent;
    color: var(--light);
    font-weight: 600;
    border: 2px solid var(--primary);
    border-radius: 0.75rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    font-size: 1rem;
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(250, 204, 21, 0.3);
}

/* ===============================================
   HERO SECTION
   =============================================== */

#home {
    background: linear-gradient(135deg, var(--dark) 0%, #1e293b 50%, var(--dark) 100%);
    position: relative;
}

.hero-bg {
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(250, 204, 21, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(251, 146, 60, 0.1) 0%, transparent 50%),
        url('https://images.unsplash.com/photo-1534723452862-4c874018d66d?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.floating-element {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(-10px) rotate(240deg); }
}

.stat-card {
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid rgba(250, 204, 21, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(250, 204, 21, 0.2);
}

.scroll-indicator {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-30px); }
    60% { transform: translateY(-15px); }
}

/* ===============================================
   GLASS CARDS & EFFECTS
   =============================================== */

.glass-card {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(250, 204, 21, 0.5), transparent);
}

.glass-card:hover {
    background: rgba(51, 65, 85, 0.5);
    border-color: rgba(250, 204, 21, 0.4);
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.section-bg {
    background: radial-gradient(circle at 50% 50%, rgba(250, 204, 21, 0.05) 0%, transparent 70%);
}

.glow-effect {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(250, 204, 21, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* ===============================================
   FEATURE CARDS & CONTENT
   =============================================== */

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(51, 65, 85, 0.4);
    border-color: rgba(250, 204, 21, 0.3);
    transform: translateX(10px);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: rgba(250, 204, 21, 0.1);
    border: 1px solid rgba(250, 204, 21, 0.3);
    border-radius: 0.75rem;
    flex-shrink: 0;
}

.process-step {
    text-align: center;
    padding: 2rem;
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    transition: var(--transition);
    position: relative;
}

.process-step:hover {
    background: rgba(51, 65, 85, 0.4);
    border-color: rgba(250, 204, 21, 0.4);
    transform: translateY(-10px);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--dark);
    font-size: 1.5rem;
    font-weight: 800;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    position: relative;
}

.step-number::after {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.3;
    animation: ripple 2s ease-out infinite;
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* ===============================================
   CHALLENGE SECTION
   =============================================== */

.challenge-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(30, 41, 59, 0.2);
    border-radius: 0.75rem;
    transition: var(--transition);
}

.challenge-item:hover {
    background: rgba(51, 65, 85, 0.3);
    transform: translateX(5px);
}

.newspaper-mockup {
    background: #f3e2d1;
    color: #2d2a26;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform: rotate(-2deg);
    transition: var(--transition);
    border: 1px solid #d4b896;
}

.newspaper-mockup:hover {
    transform: rotate(0deg) scale(1.02);
}

.newspaper-header {
    border-bottom: 2px solid #2d2a26;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.cost-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    transition: var(--transition);
}

.cost-item:hover {
    background: rgba(51, 65, 85, 0.4);
    border-color: rgba(220, 38, 38, 0.4);
    transform: translateY(-5px);
}

.quote-card {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--primary);
    border-radius: 1rem;
    padding: 2rem;
    position: relative;
}

/* ===============================================
   CAREER SECTION
   =============================================== */

.career-card {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.career-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.career-card:hover::before {
    transform: scaleX(1);
}

.career-card:hover {
    background: rgba(51, 65, 85, 0.5);
    border-color: rgba(250, 204, 21, 0.4);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(250, 204, 21, 0.2);
}

.career-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 5rem;
    height: 5rem;
    background: rgba(250, 204, 21, 0.1);
    border: 2px solid rgba(250, 204, 21, 0.3);
    border-radius: 1rem;
    margin: 0 auto 1.5rem;
}

.salary-range {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.career-timeline {
    position: relative;
    padding-left: 2rem;
}

.career-timeline::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-dot {
    position: absolute;
    left: -2.5rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--primary);
    border: 3px solid var(--dark);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(250, 204, 21, 0.3);
}

.timeline-content {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: var(--transition);
}

.timeline-content:hover {
    background: rgba(51, 65, 85, 0.5);
    border-color: rgba(250, 204, 21, 0.3);
    transform: translateX(10px);
}

/* ===============================================
   CONTACT SECTION
   =============================================== */

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(30, 41, 59, 0.2);
    border-radius: 0.75rem;
    transition: var(--transition);
}

.contact-item:hover {
    background: rgba(51, 65, 85, 0.3);
    transform: translateX(5px);
}

.faq-item {
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    color: inherit;
    font-size: inherit;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(51, 65, 85, 0.3);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer.open {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
}

/* ===============================================
   FLOATING ELEMENTS
   =============================================== */

.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    width: 4rem;
    height: 4rem;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    animation: pulse-wa 2s infinite;
}

.whatsapp-float:hover {
    background: #128C7E;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

@keyframes pulse-wa {
    0% { box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1); }
    100% { box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4); }
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 1000;
    width: 3rem;
    height: 3rem;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(250, 204, 21, 0.3);
    border-radius: 50%;
    color: var(--primary);
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: rgba(51, 65, 85, 0.9);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .career-timeline {
        padding-left: 1.5rem;
    }
    
    .career-timeline::before {
        left: 0.75rem;
    }
    
    .timeline-dot {
        left: -2rem;
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .process-step {
        padding: 1.5rem;
    }
    
    .step-number {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
    
    .career-card {
        padding: 1.5rem;
    }
    
    .career-icon {
        width: 4rem;
        height: 4rem;
    }
    
    .feature-card {
        padding: 1rem;
        flex-direction: column;
        text-align: center;
    }
    
    .whatsapp-float {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 3.5rem;
        height: 3.5rem;
    }
    
    .back-to-top {
        bottom: 1.5rem;
        left: 1.5rem;
        width: 2.5rem;
        height: 2.5rem;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .text-3xl {
        font-size: 1.5rem;
    }
    
    .text-4xl {
        font-size: 1.875rem;
    }
    
    .glass-card {
        margin: 0 1rem;
    }
    
    .newspaper-mockup {
        transform: rotate(0deg);
        margin: 1rem 0;
    }
    
    .career-timeline {
        padding-left: 1rem;
    }
    
    .timeline-item {
        padding-left: 1.5rem;
    }
    
    .timeline-dot {
        left: -1.75rem;
        width: 0.75rem;
        height: 0.75rem;
    }
}

/* ===============================================
   LOADING ANIMATIONS
   =============================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ===============================================
   ACCESSIBILITY & PRINT STYLES
   =============================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media print {
    .whatsapp-float,
    .back-to-top,
    #navbar,
    .scroll-indicator {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .glass-card {
        background: #f8f9fa !important;
        border: 1px solid #dee2e6 !important;
    }
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

button:focus,
a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .glass-card {
        background: rgba(30, 41, 59, 0.9);
        border: 2px solid var(--primary);
    }
    
    .text-gradient {
        color: var(--primary);
        -webkit-text-fill-color: var(--primary);
    }
}