/* ===================================
   Air Lagon - Premium Dark Theme
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Premium Dark Theme Palette */
    --primary-color: #00e5ff;
    /* Cyan */
    --primary-dark: #00a8cc;
    --primary-light: #80f2ff;
    --secondary-color: #8a2be2;
    /* Blue Violet */
    --accent-color: #ff007f;
    /* Neon Pink */
    --gold: #f59e0b;
    /* Premium Gold/Orange */

    --bg-main: #030712;
    /* Deep Void */
    --bg-surface: rgba(11, 16, 30, 0.5);
    /* Translusecent Surface */
    --bg-surface-solid: #0b101e;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    --text-inverse: #0f172a;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-glow: linear-gradient(135deg, rgba(0, 229, 255, 0.4), rgba(138, 43, 226, 0.4));
    --gradient-hero: radial-gradient(circle at 20% 30%, rgba(0, 229, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(138, 43, 226, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(3, 7, 18, 0.8) 0%, #030712 100%);
    --gradient-premium: linear-gradient(135deg, #fcd34d, #f59e0b, #b45309);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-border-hover: rgba(0, 229, 255, 0.3);
    --glass-blur: blur(24px);

    /* Spacing & Sizes */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Shadows */
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.2);
    --shadow-glow-strong: 0 0 30px rgba(0, 229, 255, 0.4);

    /* Typography */
    --font-primary: 'Outfit', sans-serif;
    --font-secondary: 'Inter', sans-serif;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* ===================================
   Base Styles
   =================================== */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-main);
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--text-secondary);
    background-color: var(--bg-main);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Appliquer le gradient abstrait au body global */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--gradient-hero);
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 2;
}

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

a:hover {
    color: var(--text-primary);
    text-shadow: var(--shadow-glow);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}

/* ===================================
   Typography
   =================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3rem, 5vw, 4.5rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.25rem;
}

.section-title {
    text-align: center;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    text-align: center;
    color: var(--primary-color);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-3xl);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--text-secondary);
}

p {
    margin-bottom: 1rem;
}

/* ===================================
   Glassmorphism Utilities
   =================================== */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--shadow-glass);
    transition: var(--transition);
}

.glass-panel:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-glow);
}

/* ===================================
   Buttons
   =================================== */
.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    /* Always white for visibility */
    box-shadow: var(--shadow-glow);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    opacity: 0;
    z-index: -1;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-glow-strong);
    color: #fff;
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
    color: var(--primary-color);
    transform: translateY(-3px) scale(1.02);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ===================================
   Navbar (Floating Glass Pill)
   =================================== */
.navbar {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    background: rgba(11, 16, 30, 0.4);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    z-index: 1000;
    transition: var(--transition-slow);
    padding: 0.5rem 1.5rem;
}

.navbar.scrolled {
    top: 1rem;
    background: rgba(11, 16, 30, 0.8);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 1.5rem;
    margin: 0;
    background: linear-gradient(135deg, #fff, var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    letter-spacing: 0.05em;
}

.logo-subtitle {
    font-size: 0.65rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-top: -3px;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    box-shadow: 0 0 10px var(--primary-color);
}

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

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

.nav-btn {
    padding: 0.6rem 1.5rem;
    font-size: 0.85rem;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

@media (max-width: 992px) {
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(11, 16, 30, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        border-radius: 24px;
        border: 1px solid var(--glass-border);
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: var(--transition);
    }

    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(10px);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 15vh;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Subtle radial glow to make text pop */
    background: radial-gradient(circle at center, transparent 0%, var(--bg-main) 100%);
    pointer-events: none;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: 0 1rem;
}

.hero-badge {
    display: inline-block;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    color: var(--primary-color);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.1);
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(3.5rem, 8vw, 6rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to bottom right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px rgba(255, 255, 255, 0.1);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-weight: 300;
}

.hero-trust {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.trust-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    border-radius: 20px;
    text-align: center;
    min-width: 150px;
}

.trust-item strong {
    display: block;
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 800;
    font-family: var(--font-primary);
    text-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
}

.trust-item span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.hero-reassurance {
    margin-top: 3rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* ===================================
   Grid Layouts & Sections
   =================================== */
section {
    padding: var(--spacing-4xl) 0;
    position: relative;
    z-index: 2;
}

.features-grid,
.flights-grid,
.about-grid,
.gallery-grid,
.testimonials-grid,
.contact-grid {
    display: grid;
    gap: var(--spacing-xl);
}

.features-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.flights-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
}

.gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.testimonials-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.contact-grid {
    grid-template-columns: 1fr 1.5fr;
}

/* ===================================
   Feature Cards
   =================================== */
.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    padding: 2.5rem 2rem;
    border-radius: 24px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--glass-border-hover);
    background: var(--glass-bg-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.2));
}

/* ===================================
   Flight Cards
   =================================== */
.flight-card {
    background: linear-gradient(180deg, rgba(17, 24, 39, 0.8) 0%, rgba(3, 7, 18, 0.9) 100%);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: var(--transition-slow);
}

.flight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border-hover), transparent);
    opacity: 0;
    transition: var(--transition);
}

.flight-card:hover {
    transform: translateY(-12px);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.1);
}

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

.flight-header {
    padding: 2.5rem 2rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.flight-card h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.flight-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.flight-price .price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    font-family: var(--font-primary);
}

.flight-price .duration {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.flight-body {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.flight-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.flight-features {
    margin-bottom: 2rem;
    flex: 1;
}

.flight-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.flight-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--gradient-primary);
    color: #fff;
    padding: 0.25rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: var(--shadow-glow);
}

.flight-card.premium .badge {
    background: var(--gradient-premium);
    color: #000;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

.flight-card.premium .price {
    color: var(--gold);
}

.flight-card.premium:hover {
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(255, 215, 0, 0.15);
}

/* ===================================
   About Section
   =================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.stat {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    font-family: var(--font-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.about-image .image-placeholder {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.5);
}

/* ===================================
   Gallery
   =================================== */
.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
}

.gallery-item .image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-slow);
}

.gallery-item:hover .image-placeholder {
    background: var(--primary-dark);
    color: #fff;
    transform: scale(1.05);
}

/* ===================================
   Testimonials
   =================================== */
.testimonial-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    position: relative;
}

.stars {
    color: var(--gold);
    font-size: 1.25rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.testimonial-author strong {
    display: block;
    color: var(--text-primary);
}

.testimonial-author span {
    color: var(--primary-color);
    font-size: 0.85rem;
    text-transform: uppercase;
}

/* ===================================
   Contact
   =================================== */
.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 229, 255, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.contact-form-wrapper {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    padding: 3rem;
    box-shadow: var(--shadow-glass);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1rem;
    color: #fff;
    font-family: var(--font-secondary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 229, 255, 0.2);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: #010308;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 5rem 0 2rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer h3,
.footer h4 {
    color: #fff;
    margin-bottom: 1.5rem;
}

.footer p,
.footer li a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer li {
    margin-bottom: 0.75rem;
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8rem;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===================================
   Floating Widgets
   =================================== */
.floating-booking {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 999;
    background: rgba(11, 16, 30, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 1rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    display: none;
    /* Hide by default on large screens if desired, or keep */
}

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    background: #25d366;
    color: #fff;
    padding: 1rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.85rem;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.3);
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 40px rgba(37, 211, 102, 0.5);
    color: #fff;
}

.back-to-top {
    position: fixed;
    bottom: 90px;
    right: 30px;
    z-index: 998;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

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

.back-to-top:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: transparent;
}

/* Responsive Utility */
@media (max-width: 768px) {

    .about-grid,
    .contact-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn-large {
        width: 100%;
    }
}