/* =========================================
   ROBO AIA PATHS - MODERN ROBOTIC THEME
   ========================================= */

/* --- GOOGLE FONTS --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Rajdhani:wght@500;600;700&display=swap');

/* --- ROOT VARIABLES --- */
:root {
    /* Core Palette */
    --primary: #006eff;
    /* Electric Blue */
    --primary-dark: #0056cc;
    --secondary: #64748b;
    /* Slate */
    --accent: #00d2ff;
    /* Cyan Highlight */
    --accent-purple: #7c3aed;
    /* Deep Purple */

    /* Backgrounds */
    --bg-body: #f8fafc;
    /* Light Blue-Grey */
    --bg-surface: #ffffff;
    --bg-dark: #0f172a;
    /* Dark Navy */

    /* Text */
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #cbd5e1;

    /* Gradients */
    --gradient-brand: linear-gradient(135deg, #006eff 0%, #00d2ff 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --gradient-glow: linear-gradient(45deg, rgba(0, 110, 255, 0.1), rgba(124, 58, 237, 0.1));

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(0, 110, 255, 0.3);
}

/* --- GLOBAL RESETS & TYPOGRAPHY --- */
body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-main);
}

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

.lead {
    font-size: 1.15rem;
    font-weight: 400;
}

.small {
    font-size: 0.875rem;
}

.letter-spacing-2 {
    letter-spacing: 2px;
}

/* --- BUTTONS --- */
.btn {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.75rem 1.5rem;
    border-radius: 50rem;
    /* Pill shape */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary,
.btn-tech {
    background: var(--gradient-brand);
    border: none;
    color: white !important;
    box-shadow: 0 4px 6px -1px rgba(0, 110, 255, 0.3);
}

.btn-primary:hover,
.btn-tech:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 110, 255, 0.4), 0 0 20px rgba(0, 210, 255, 0.3);
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 110, 255, 0.2);
}

.btn-outline-light:hover {
    background: white;
    color: var(--primary);
    transform: translateY(-2px);
}

/* --- CARDS & GLASSMORPHISM --- */
.card {
    border: 1px solid rgba(226, 232, 240, 0.8);
    background: var(--bg-surface);
    border-radius: 1.25rem;
    /* 20px */
    transition: all 0.4s ease;
}

.hover-lift {
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl) !important;
}

.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
}

/* Tech Card Variant */
.tech-card {
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

/* --- HERO SECTION --- */
.hero-section {
    position: relative;
    background-color: var(--bg-dark);
    /* Circuit pattern overlay */
    background-image:
        radial-gradient(circle at 15% 50%, rgba(0, 110, 255, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(124, 58, 237, 0.08) 0%, transparent 25%);
    overflow: hidden;
}

/* Circuit lines background */
.hero-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
    pointer-events: none;
    z-index: 1;
}

.text-gradient-tech {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Hero Visual */
.hero-visual-wrap {
    position: relative;
    z-index: 2;
}

.hero-bg-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 110, 255, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(40px);
    animation: pulse-glow 4s infinite alternate;
}

@keyframes pulse-glow {
    0% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.9);
    }

    100% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* Floating Elements Animation */
@keyframes float-y {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

.animate-float {
    animation: float-y 6s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-y 5s ease-in-out 1s infinite;
}

/* --- SECTION STYLES --- */
.section-slanted {
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
    padding-bottom: 4rem;
}

.bg-gradient-light {
    background: linear-gradient(180deg, #f8fafc 0%, #edf2f7 100%);
}

/* --- COMPONENTS --- */

/* Tech Glow Helper */
.tech-glow {
    box-shadow: 0 0 15px rgba(0, 110, 255, 0.2);
    transition: box-shadow 0.3s ease;
}

.tech-glow:hover {
    box-shadow: 0 0 25px rgba(0, 110, 255, 0.4);
}

/* Object Fit Helper */
.object-fit-cover {
    object-fit: cover;
}

/* Testimonial Carousel Indicators */
.carousel-indicators button {
    width: 12px !important;
    height: 12px !important;
    border-radius: 50%;
    background-color: var(--primary) !important;
    opacity: 0.5;
    transition: all 0.3s ease;
    margin: 0 4px !important;
}

.carousel-indicators button.active {
    opacity: 1;
    transform: scale(1.2);
    width: 24px !important;
    border-radius: 6px;
}

/* Image Scale on Hover */
.scale-on-hover {
    transition: transform 0.5s ease;
}

.card:hover .scale-on-hover {
    transform: scale(1.1);
}

/* Footer Styling */
footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-size: 0.95rem;
}

footer h5 {
    color: white;
    letter-spacing: 1px;
}

footer a {
    color: var(--text-light);
}

footer a:hover {
    color: var(--accent);
    padding-left: 5px;
}

footer p,
footer .text-muted {
    color: var(--text-light) !important;
}

.social-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
    transition: transform 0.3s ease;
    filter: brightness(0) invert(1);
    /* Make white */
    opacity: 0.7;
}

.social-icon:hover {
    transform: scale(1.2) rotate(10deg);
    opacity: 1;
    filter: none;
    /* Restore color on hover if needed, or keep white */
}

/* --- NAVBAR CUSTOMIZATION --- */
.navbar {
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.nav-link {
    font-weight: 600;
    color: var(--text-main) !important;
    padding: 0.5rem 1rem !important;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary) !important;
}

/* --- MOBILE RESPONSIVENESS --- */
@media (max-width: 991.98px) {
    .display-3 {
        font-size: 2.5rem;
    }

    .display-5 {
        font-size: 2rem;
    }

    .display-6 {
        font-size: 1.75rem;
    }

    .hero-section {
        text-align: center;
        padding-top: 100px !important;
        padding-bottom: 60px !important;
        clip-path: none;
        /* Remove slant on mobile for better space usage */
    }

    .hero-visual-wrap {
        margin-top: 3rem;
    }

    .section-slanted {
        clip-path: none;
    }
}

@media (max-width: 575.98px) {
    .btn-lg {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

/* Badge Tweaks */
.badge {
    font-weight: 600;
    border-radius: 4px;
    letter-spacing: 0.5px;
    padding: 0.5em 0.8em;
}

/* Tech Border Animation Wrapper */
.tech-border-anim {
    position: relative;
    padding: 1px;
    background: linear-gradient(45deg, var(--primary), transparent, var(--accent-purple));
    border-radius: 1rem;
}

.tech-border-anim>* {
    border-radius: 1rem;
}

/* --- NEW INTERACTIVE ENHANCEMENTS --- */
.course-row {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 20px;
}

.course-row:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 110, 255, 0.08);
    background: white;
    z-index: 5;
    position: relative;
}

.scale-hover {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.scale-hover:hover {
    transform: scale(1.1) rotate(-2deg);
    filter: drop-shadow(0 4px 10px rgba(0, 110, 255, 0.4));
}

/* --- ENHANCED SLIDER STYLES --- */
.kit-card {
    border: 1px solid rgba(0, 110, 255, 0.1);
    background: linear-gradient(145deg, #ffffff, #f8faff);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.kit-card:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 110, 255, 0.25) !important;
    transform: translateY(-5px);
    border-color: rgba(0, 110, 255, 0.3);
}

/* --- FIXED COURSE IMAGE STYLING --- */
.course-img-wrap {
    height: 400px;
    overflow: hidden;
}

.course-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-row:hover .course-img-wrap img {
    transform: scale(1.1);
}

.carousel-indicators [data-bs-target] {
    background-color: var(--primary);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    opacity: 0.5;
    transition: all 0.3s ease;
}

.carousel-indicators .active {
    opacity: 1;
    width: 30px;
    border-radius: 10px;
    background-color: var(--primary);
}