/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

.btn-outline-light {
    border: 2px solid white;
    color: white;
    background: transparent;
}

.btn-outline-light:hover {
    background: white;
    color: #667eea;
    transform: translateY(-3px);
}

/* ===== PRELOADER ===== */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader {
    text-align: center;
    color: white;
}

.loader-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255,255,255,0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ===== NAVBAR ===== */
.navbar {
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10, 25, 47, 0.98);
    padding: 0.5rem 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: white !important;
}

.navbar-logo {
    width: 45px;
    height: 45px;
    margin-right: 12px;
    border-radius: 50%;
}

.nav-link {
    color: rgba(255,255,255,0.8) !important;
    font-weight: 500;
    margin: 0 15px;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: white !important;
}

/* ===== HERO SECTION ===== */
.hero-section {
    min-height: 100vh;
    background: linear-gradient(135deg, #0a192f 0%, #1c3a5e 50%, #2d4a7a 100%);
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="0.5" fill="white" opacity="0.05"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, #64ffda 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: rgba(255,255,255,0.9);
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-img {
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.3);
    transform: perspective(1000px) rotateY(10deg);
    transition: all 0.5s ease;
}

.hero-img:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.02);
}

/* ===== SECTION TITLES ===== */
.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Programs Section Enhanced Styles */
.programs-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 100px 0;
}

.program-card {
    background: white;
    padding: 35px 25px;
    border-radius: 25px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
    height: 100%;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border-top: 5px solid transparent;
}

.web-dev { border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%) 1; }
.software-dev { border-image: linear-gradient(135deg, #f093fb 0%, #f5576c 100%) 1; }
.mobile-dev { border-image: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%) 1; }

.program-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
}

.card-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.web-dev .card-icon { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.software-dev .card-icon { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.mobile-dev .card-icon { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }

.internship-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #495057;
    margin-bottom: 20px;
}

.tech-stack {
    margin-bottom: 20px;
}

.tech-tags {
    display: inline-block;
    background: #f1f3f4;
    color: #5f6368;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin: 2px;
}

.timeline-mini {
    margin-bottom: 20px;
}

.timeline-item {
    display: block;
    margin-bottom: 8px;
    color: #6c757d;
}

.outcome {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 600;
    color: #2d3748;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.duration {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Common Details */
.common-details {
    border-radius: 25px;
    border: 1px solid #e9ecef;
}

.detail-card {
    text-align: center;
    padding: 25px 15px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.detail-card:hover {
    transform: translateY(-5px);
}

.detail-card i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
}

.detail-card h6 {
    color: #2d3748;
    margin-bottom: 10px;
    font-weight: 600;
}

.cert-list {
    list-style: none;
}

.cert-list li {
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    gap: 12px;
}

.cert-list li:last-child {
    border-bottom: none;
}

.cert-list i {
    color: #f59e0b;
    width: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .card-footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .duration {
        order: 2;
    }
    
    .btn-primary {
        order: 1;
        width: 100%;
    }
}

/* ===== TIMELINE SECTION ===== */
.timeline-section {
    padding: 100px 0;
}

.timeline-container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin: 50px 0;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    flex-shrink: 0;
}

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    max-width: 400px;
    position: relative;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #2d3748;
}

.timeline-content p {
    color: #4a5568;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .timeline-container::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        flex-direction: column;
        margin: 30px 0;
    }
    
    .timeline-icon {
        margin: 0 auto 20px;
    }
    
    .timeline-content {
        max-width: 100%;
    }
}

/* ===== BENEFITS SECTION ===== */
.benefits-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.benefit-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    height: 100%;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: white;
}

.benefit-card h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #2d3748;
}

.benefit-card ul {
    list-style: none;
    text-align: left;
}

.benefit-card li {
    padding: 8px 0;
    color: #4a5568;
    position: relative;
    padding-left: 25px;
}

.benefit-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #48bb78;
    font-weight: bold;
    font-size: 1.1rem;
}

/* ===== CONTACT SECTION ===== */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.contact-details {
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    padding: 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.contact-item i {
    font-size: 1.5rem;
    margin-right: 20px;
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h5 {
    margin-bottom: 5px;
    opacity: 0.9;
}

.contact-form-container {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 25px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.2);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 15px 20px;
    margin-bottom: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form button {
    width: 100%;
    padding: 18px;
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

/* ===== FOOTER ===== */
.footer-section {
    background: #0a192f;
    color: white;
    padding: 60px 0 20px;
}

.footer-logo {
    width: 50px;
    height: 50px;
    margin-bottom: 15px;
}

.footer-brand h3 {
    color: white;
    margin-bottom: 15px;
}

.footer-brand p {
    opacity: 0.8;
    line-height: 1.7;
}

.footer-section h4 {
    margin-bottom: 25px;
    color: #64ffda;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255,255,255,0.7);
    transition: all 0.3s ease;
}

.footer-section a:hover {
    color: #64ffda;
    padding-left: 10px;
}

.social-links {
    margin-top: 20px;
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #64ffda;
    color: #0a192f;
    transform: translateY(-3px);
}

.contact-info-footer p {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    opacity: 0.9;
}

.contact-info-footer i {
    width: 25px;
    margin-right: 12px;
    color: #64ffda;
}

.footer-section hr {
    border-color: rgba(255,255,255,0.1);
    margin: 40px 0;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    transition: all 0.3s ease;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

/* ===== MESSAGE ALERTS ===== */
#msg .alert {
    border: none;
    border-radius: 12px;
    padding: 15px 20px;
    margin-bottom: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

@media (max-width: 992px) {
    .navbar-collapse {
        background: rgba(10, 25, 47, 0.98);
        backdrop-filter: blur(20px);
        border-radius: 15px;
        padding: 20px;
        margin-top: 15px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-buttons .btn {
        width: 100%;
        text-align: center;
    }
    
    .timeline-container::before {
        left: 25px;
    }
}

@media (max-width: 768px) {
    .navbar-brand span {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .programs-section,
    .timeline-section,
    .benefits-section,
    .contact-section {
        padding: 60px 0;
    }
    
    .contact-form-container {
        padding: 30px 25px;
    }
    
    .program-card,
    .benefit-card {
        margin-bottom: 30px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .contact-info h2 {
        font-size: 2rem;
    }
    
    .footer-section .row > div {
        margin-bottom: 30px;
    }
    
    .card-footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* ===== ANIMATIONS & UTILITIES ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

.pulse {
    animation: pulse 2s infinite;
}

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

.glow {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 0 20px rgba(102, 126, 234, 0.3); }
    to { box-shadow: 0 0 30px rgba(102, 126, 234, 0.6); }
}

/* ===== SMOOTH SCROLLING ===== */
html {
    scroll-behavior: smooth;
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
}

/* ===== SELECTION STYLING ===== */
::-moz-selection {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

::selection {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* ===== LOADING STATES ===== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ===== FLOATING ELEMENTS ===== */
.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* ===== GLASSMORPHISM EFFECT ===== */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===== PARTICLE BACKGROUND (Optional Enhancement) ===== */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 6s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* ===== PERFECT RESPONSIVE GRID ===== */
@media (max-width: 480px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar, .back-to-top, .hero-buttons {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid #000;
    }
    
    .card {
        border: 2px solid #000;
    }
}

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

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
    body {
        background: #0a192f;
        color: #ccd6f6;
    }
    
    .program-card,
    .benefit-card,
    .timeline-content {
        background: #112240;
        color: #ccd6f6;
    }
}