/* ============================================
   ISI Teknologi Landing Page - Custom Styles
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Primary Colors - Matching the teal/cyan logo */
    --primary: #00BFDD;
    --primary-light: #33D4ED;
    --primary-dark: #0098B0;
    --primary-glow: rgba(0, 191, 221, 0.35);

    /* Accent - Gold matching logo ring */
    --accent: #F5A623;
    --accent-light: #FFBD44;
    --accent-dark: #D48D1A;
    --accent-glow: rgba(245, 166, 35, 0.3);

    /* Neutrals */
    --dark-bg: #0a0e17;
    --dark-surface: #111827;
    --dark-card: rgba(17, 24, 39, 0.7);
    --dark-card-border: rgba(0, 191, 221, 0.12);
    --text-primary: #f0f4f8;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00BFDD 0%, #0098B0 50%, #00708A 100%);
    --gradient-accent: linear-gradient(135deg, #F5A623 0%, #FFBD44 100%);
    --gradient-hero: linear-gradient(180deg, rgba(10, 14, 23, 0.65) 0%, rgba(10, 14, 23, 0.85) 50%, rgba(10, 14, 23, 0.95) 100%);
    --gradient-dark: linear-gradient(180deg, #0a0e17 0%, #111827 100%);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --section-padding: 100px 0;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px var(--primary-glow);
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow: hidden;
    /* No scroll */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

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

/* ============================================
   Utility Classes
   ============================================ */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(0, 191, 221, 0.08);
    border: 1px solid rgba(0, 191, 221, 0.2);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 48px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.accent-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ============================================
   Navbar
   ============================================ */
.navbar {
    padding: 16px 0;
    transition: var(--transition-normal);
    background: transparent;
    z-index: 1000;
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(10, 14, 23, 0.9) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 191, 221, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--text-primary) !important;
}

.navbar-brand img {
    height: 45px;
    width: 45px;
    object-fit: contain;
    filter: drop-shadow(0 0 10px var(--primary-glow));
    transition: var(--transition-normal);
}

.navbar-brand:hover img {
    filter: drop-shadow(0 0 20px var(--primary-glow));
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary) !important;
    padding: 8px 18px !important;
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
    position: relative;
}

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

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

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 60%;
}

.navbar-toggler {
    border: 1px solid rgba(0, 191, 221, 0.3) !important;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
}

.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(0,191,221,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

.btn-nav-demo {
    background: var(--gradient-primary);
    color: #fff !important;
    font-weight: 600;
    padding: 10px 24px !important;
    border-radius: 50px;
    border: none;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-nav-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--primary-glow);
    color: #fff !important;
}

/* ============================================
   Hero Section
   ============================================ */
#hero {
    position: relative;
    height: 100vh;
    /* Fixed height */
    width: 100%;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    overflow: hidden;
    background-color: var(--dark-bg);
}

/* Hero Image (Globally Centered) */
.hero-image-wrap {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    z-index: 2;
    text-align: center;
    filter: drop-shadow(0 0 30px var(--primary-glow));
    transition: var(--transition-slow);
}

.hero-img-main {
    max-width: 85%;
    max-height: 55vh;
    /* Balanced size for centering */
    width: auto;
    height: auto;
    border-radius: var(--radius-lg);
    display: inline-block;
}

@media (max-width: 767.98px) {
    .hero-img-main {
        max-width: 95%;
        max-height: 45vh;
        /* Prevent overlap with footer text */
    }
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0;
    animation: particleFloat 8s infinite;
}

.particle:nth-child(1) {
    left: 10%;
    top: 20%;
    animation-delay: 0s;
    animation-duration: 7s;
}

.particle:nth-child(2) {
    left: 25%;
    top: 60%;
    animation-delay: 1s;
    animation-duration: 9s;
}

.particle:nth-child(3) {
    left: 40%;
    top: 30%;
    animation-delay: 2s;
    animation-duration: 6s;
}

.particle:nth-child(4) {
    left: 55%;
    top: 70%;
    animation-delay: 0.5s;
    animation-duration: 8s;
}

.particle:nth-child(5) {
    left: 70%;
    top: 15%;
    animation-delay: 3s;
    animation-duration: 10s;
}

.particle:nth-child(6) {
    left: 85%;
    top: 50%;
    animation-delay: 1.5s;
    animation-duration: 7s;
}

.particle:nth-child(7) {
    left: 15%;
    top: 80%;
    animation-delay: 2.5s;
    animation-duration: 9s;
}

.particle:nth-child(8) {
    left: 60%;
    top: 45%;
    animation-delay: 4s;
    animation-duration: 6s;
}

.particle:nth-child(9) {
    left: 90%;
    top: 25%;
    animation-delay: 0.8s;
    animation-duration: 11s;
}

.particle:nth-child(10) {
    left: 35%;
    top: 90%;
    animation-delay: 3.5s;
    animation-duration: 8s;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(0) scale(1);
    }

    10% {
        opacity: 0.6;
    }

    50% {
        opacity: 0.3;
    }

    90% {
        opacity: 0.6;
    }

    100% {
        opacity: 0;
        transform: translateY(-120px) scale(0.5);
    }
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 80px 20px 40px;
    width: 100%;
    display: flex;
    flex-direction: column;
    height: 100vh;
    justify-content: flex-end;
    /* Always keeps text/buttons at bottom */
}

.hero-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 32px;
    animation: logoFloat 4s ease-in-out infinite;
    filter: drop-shadow(0 0 30px var(--primary-glow));
    transition: var(--transition-slow);
}

.hero-logo:hover {
    filter: drop-shadow(0 0 50px var(--primary-glow));
    transform: scale(1.08);
}

@keyframes logoFloat {

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

    50% {
        transform: translateY(-12px);
    }
}

.hero-title {
    font-size: clamp(1.8rem, 5vw, 3rem);
    /* Smaller font */
    font-weight: 900;
    margin-bottom: 24px;
    /* Less margin */
    letter-spacing: -1px;
}

.hero-title .brand-name {
    display: block;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 40%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-weight: 300;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    /* Smaller button */
    background: var(--gradient-primary);
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    /* Smaller font */
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 8px 30px var(--primary-glow);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-hero-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: 0.5s;
}

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

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px var(--primary-glow);
    color: #fff;
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    border-radius: 50px;
    border: 1px solid rgba(0, 191, 221, 0.3);
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.btn-hero-secondary:hover {
    background: rgba(0, 191, 221, 0.08);
    border-color: var(--primary);
    transform: translateY(-3px);
    color: var(--primary-light);
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: scrollBounce 2s ease-in-out infinite;
    cursor: pointer;
}

.scroll-indicator span {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-indicator i {
    font-size: 1.2rem;
    color: var(--primary);
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ============================================
   About Section
   ============================================ */
#tentang {
    padding: var(--section-padding);
    background: var(--gradient-dark);
    position: relative;
}

#tentang::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-wrapper img {
    width: 100%;
    border-radius: var(--radius-lg);
    transition: var(--transition-slow);
}

.about-image-wrapper:hover img {
    transform: scale(1.03);
}

.about-image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 191, 221, 0.15);
    pointer-events: none;
}

.about-content h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 24px;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 20px;
}

.about-stats {
    display: flex;
    gap: 32px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

/* ============================================
   Services / Features Section
   ============================================ */
#layanan {
    padding: var(--section-padding);
    position: relative;
    background: var(--dark-bg);
}

.feature-card {
    background: var(--dark-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--dark-card-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition-normal);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 191, 221, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px var(--primary-glow);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    background: rgba(0, 191, 221, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2rem;
    color: var(--primary);
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: rgba(0, 191, 221, 0.15);
    transform: scale(1.1);
    box-shadow: 0 0 30px var(--primary-glow);
}

.feature-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   Technology Section
   ============================================ */
#teknologi {
    padding: var(--section-padding);
    background: var(--gradient-dark);
    position: relative;
}

#teknologi::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 24px;
}

.tech-item {
    background: var(--dark-card);
    border: 1px solid var(--dark-card-border);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition-normal);
}

.tech-item:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 191, 221, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.tech-item i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 12px;
    display: block;
    transition: var(--transition-normal);
}

.tech-item:hover i {
    color: var(--primary-light);
    transform: scale(1.15);
}

.tech-item span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
}

/* ============================================
   CTA Section
   ============================================ */
#cta {
    padding: 80px 0;
    background: var(--dark-bg);
    position: relative;
}

.cta-box {
    background: linear-gradient(135deg, rgba(0, 191, 221, 0.08) 0%, rgba(0, 152, 176, 0.05) 100%);
    border: 1px solid rgba(0, 191, 221, 0.15);
    border-radius: var(--radius-xl);
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--primary-glow), transparent 70%);
    opacity: 0.3;
}

.cta-box::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-glow), transparent 70%);
    opacity: 0.2;
}

.cta-box h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-box p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 550px;
    margin: 0 auto 36px;
    position: relative;
    z-index: 1;
}

.cta-box .btn-hero-primary {
    position: relative;
    z-index: 1;
}

/* ============================================
   Footer
   ============================================ */
footer {
    background: var(--dark-surface);
    padding: 60px 0 24px;
    border-top: 1px solid rgba(0, 191, 221, 0.08);
}

.footer-brand img {
    height: 50px;
    margin-bottom: 16px;
    filter: drop-shadow(0 0 15px var(--primary-glow));
}

.footer-brand h5 {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 320px;
}

.footer-links h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h6::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-links ul li a:hover {
    color: var(--primary-light);
    padding-left: 4px;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 191, 221, 0.08);
    border: 1px solid rgba(0, 191, 221, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--primary-glow);
}

.footer-bottom {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px var(--primary-glow);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

/* ============================================
   Loading Screen
   ============================================ */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    text-align: center;
}

.preloader-inner img {
    width: 80px;
    height: 80px;
    animation: logoFloat 2s ease-in-out infinite;
    filter: drop-shadow(0 0 25px var(--primary-glow));
}

.preloader-bar {
    width: 120px;
    height: 3px;
    background: rgba(0, 191, 221, 0.15);
    border-radius: 3px;
    margin: 20px auto 0;
    overflow: hidden;
}

.preloader-bar::after {
    content: '';
    display: block;
    width: 40%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    animation: preloaderSlide 1.2s ease-in-out infinite;
}

@keyframes preloaderSlide {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(350%);
    }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(10, 14, 23, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-radius: var(--radius-md);
        padding: 20px;
        margin-top: 12px;
        border: 1px solid rgba(0, 191, 221, 0.1);
    }

    .navbar-nav .nav-link {
        padding: 12px 16px !important;
    }

    .btn-nav-demo {
        display: inline-block;
        margin-top: 8px;
        text-align: center;
    }

    .hero-content {
        padding: 120px 16px 80px; /* Increased bottom padding */
        /* Inherit flex-end and height from base */
    }

    .about-stats {
        justify-content: center;
    }

    .cta-box {
        padding: 48px 24px;
    }
}

@media (max-width: 767.98px) {
    :root {
        --section-padding: 60px 0;
    }

    .hero-logo {
        width: 90px;
        height: 90px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .about-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .footer-brand {
        text-align: center;
        margin-bottom: 32px;
    }

    .footer-brand p {
        margin: 0 auto;
    }

    .footer-links {
        margin-bottom: 24px;
    }

    .footer-social {
        justify-content: center;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 575.98px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}