/* Custom CSS for Hybrid Industrial Learning */

:root {
    --primary-blue: #0d6efd;
    --secondary-orange: #fd7e14;
    --accent-green: #198754;
    --dark-blue: #0a58ca;
    --light-blue: #cfe2ff;
    --gradient-primary: linear-gradient(135deg, #0d6efd 0%, #fd7e14 100%);
    --gradient-hero: linear-gradient(135deg, rgba(13, 110, 253, 0.9) 0%, rgba(253, 126, 20, 0.8) 100%);
    --shadow-soft: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-hover: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Navbar Styles */
.navbar {
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95) !important;
    transition: var(--transition-smooth);
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue) !important;
    transition: var(--transition-smooth);
}

.navbar-brand:hover {
    transform: scale(1.05);
    color: var(--secondary-orange) !important;
}

.nav-link {
    font-weight: 500;
    color: #333 !important;
    transition: var(--transition-smooth);
    position: relative;
    margin: 0 0.5rem;
}

.nav-link:hover {
    color: var(--primary-blue) !important;
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}

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

.btn-cta {
    background: var(--gradient-primary);
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-soft);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--secondary-orange) 100%);
}

/* Navbar Toggler - Only show on mobile */
.navbar-toggler {
    border: none;
    padding: 0.25rem 0.5rem;
    background: transparent;
    transition: var(--transition-smooth);
}

.navbar-toggler:focus {
    box-shadow: none;
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 37, 41, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hide navbar toggler on desktop (lg and above) */
@media (min-width: 992px) {
    .navbar-toggler {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        pointer-events: none !important;
    }
}

/* Additional specificity for Bootstrap override */
@media screen and (min-width: 992px) {
    .navbar .navbar-toggler,
    .navbar-expand-lg .navbar-toggler {
        display: none !important;
        visibility: hidden !important;
    }
}

/* Force hide on all desktop screens - Edge compatibility */
@media (min-width: 992px) {
    button.navbar-toggler,
    .navbar button.navbar-toggler,
    .navbar-expand-lg button.navbar-toggler {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        position: absolute !important;
        left: -9999px !important;
        width: 0 !important;
        height: 0 !important;
        overflow: hidden !important;
    }
}

/* Hero Carousel Section */
.hero-carousel-section {
    position: relative;
}

.hero-slide {
    min-height: 100vh;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-slide-1 {
    background: var(--gradient-hero),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/><circle cx="900" cy="800" r="80" fill="url(%23a)"/></svg>');
}

.hero-slide-2 {
    background: linear-gradient(135deg, rgba(253, 126, 20, 0.9) 0%, rgba(13, 110, 253, 0.8) 100%),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="b" cx="30%" cy="30%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.15"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><polygon points="100,100 300,50 500,200 200,300" fill="url(%23b)"/><polygon points="600,150 800,100 900,400 700,450" fill="url(%23b)"/><polygon points="150,600 400,550 350,800 100,750" fill="url(%23b)"/></svg>');
}

.hero-slide-3 {
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.9) 0%, rgba(13, 110, 253, 0.8) 100%),
                url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="c" cx="70%" cy="70%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.12"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><rect x="100" y="100" width="200" height="200" fill="url(%23c)" transform="rotate(45 200 200)"/><rect x="600" y="200" width="150" height="150" fill="url(%23c)" transform="rotate(30 675 275)"/><rect x="300" y="600" width="180" height="180" fill="url(%23c)" transform="rotate(60 390 690)"/></svg>');
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-slide .container {
    position: relative;
    z-index: 2;
}

.hero-slide h1 {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 2rem;
}

.hero-slide .lead {
    font-size: 1.5rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    margin-bottom: 3rem;
}

/* Carousel Controls Styling */
.carousel-control-prev,
.carousel-control-next {
    width: 8%;
    opacity: 0.9;
    transition: var(--transition-smooth);
    z-index: 3;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    opacity: 1;
}

.carousel-control-prev:focus,
.carousel-control-next:focus {
    opacity: 1;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    width: 3rem;
    height: 3rem;
    background-size: 60%;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.25);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.carousel-control-prev:hover .carousel-control-prev-icon,
.carousel-control-next:hover .carousel-control-next-icon {
    background-color: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Position controls with better spacing */
.carousel-control-prev {
    left: 2rem;
}

.carousel-control-next {
    right: 2rem;
}

/* Carousel Indicators Styling */
.carousel-indicators {
    bottom: 2rem;
    z-index: 3;
}

.carousel-indicators [data-bs-target] {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.8);
    background-color: transparent;
    transition: var(--transition-smooth);
    margin: 0 6px;
    cursor: pointer;
    opacity: 0.7;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.carousel-indicators [data-bs-target]:hover {
    opacity: 1;
    transform: scale(1.1);
    border-color: white;
    background-color: rgba(255, 255, 255, 0.3);
}

.carousel-indicators .active {
    background-color: white;
    transform: scale(1.3);
    opacity: 1;
    border-color: white;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.4);
}

/* Carousel Animation */
.carousel-item {
    transition: transform 0.8s ease-in-out;
}

.carousel-item-next,
.carousel-item-prev,
.carousel-item.active {
    display: block;
}

.carousel-item-next:not(.carousel-item-start),
.active.carousel-item-end {
    transform: translateX(100%);
}

.carousel-item-prev:not(.carousel-item-end),
.active.carousel-item-start {
    transform: translateX(-100%);
}

.btn-warning {
    background: var(--secondary-orange);
    border: none;
    color: white;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-soft);
}

.btn-warning:hover {
    background: #e8690b;
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    color: white;
}

/* About Section */
#about {
    padding: 5rem 0;
}

.about-image {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.about-image:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.about-image svg {
    transition: var(--transition-smooth);
}

.about-image:hover svg {
    transform: scale(1.05);
}

/* Programs Section */
#programs {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.program-card {
    border: none;
    border-radius: 20px;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    height: 100%;
}

.program-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.program-card .card-body {
    padding: 2.5rem 2rem;
}

.program-card i {
    transition: var(--transition-smooth);
}

.program-card:hover i {
    transform: scale(1.2) rotate(5deg);
    color: var(--secondary-orange) !important;
}

.special-card {
    background: var(--gradient-primary);
    color: white;
}

.special-card:hover {
    background: linear-gradient(135deg, var(--dark-blue) 0%, #e8690b 100%);
}

.special-card .btn-light {
    transition: var(--transition-smooth);
}

.special-card .btn-light:hover {
    transform: scale(1.05);
    box-shadow: 0 0.5rem 1rem rgba(255, 255, 255, 0.3);
}

/* Contact Section */
#contact {
    padding: 5rem 0;
}

.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.contact-form:hover {
    box-shadow: var(--shadow-hover);
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: var(--transition-smooth);
}

.form-control:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.contact-info {
    padding: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    padding: 1rem;
    border-radius: 15px;
    transition: var(--transition-smooth);
}

.contact-item:hover {
    background: var(--light-blue);
    transform: translateX(10px);
}

.social-links .btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.social-links .btn:hover {
    transform: translateY(-3px) scale(1.1);
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #212529 0%, #495057 100%);
}

footer a {
    transition: var(--transition-smooth);
}

footer a:hover {
    color: var(--secondary-orange) !important;
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section .lead {
        font-size: 1.2rem;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .contact-form,
    .contact-info {
        padding: 1.5rem;
    }
    
    .program-card .card-body {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        background-attachment: scroll;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .hero-section .lead {
        font-size: 1.1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* Animation Enhancements */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.btn-cta {
    animation: pulse 2s infinite;
}

.btn-cta:hover {
    animation: none;
}

/* Scroll Indicator */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform-origin: left;
    transform: scaleX(0);
    z-index: 9999;
    transition: transform 0.3s ease;
}

/* Loading Animation */
.loading {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--dark-blue) 0%, #e8690b 100%);
}