/* ===== Custom Styles for Energy Fit House ===== */

/* Base */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: #020617;
}

/* Selection */
::selection {
    background-color: rgba(20, 184, 166, 0.3);
    color: #f1f5f9;
}

/* ===== Navbar ===== */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #f59e0b, #14b8a6);
    transition: width 0.3s ease;
    border-radius: 1px;
}

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

/* Navbar scrolled state */
.navbar-scrolled {
    background: rgba(2, 6, 23, 0.9) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* ===== Mobile Menu ===== */
.mobile-menu-open {
    opacity: 1 !important;
    pointer-events: auto !important;
}

.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

.mobile-menu-open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu-open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu-open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu-open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu-open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* Hamburger animation */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.menu-toggle[aria-expanded="true"] .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-line:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-line:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.5rem;
    margin-right: 0;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion - content always visible */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
    html {
        scroll-behavior: auto;
    }
    .group img {
        transition: none;
    }
}

/* ===== Product Cards ===== */
.product-card {
    will-change: transform;
}

/* ===== Gold shimmer accent line ===== */
.shimmer-line {
    background: linear-gradient(90deg, transparent, #f59e0b, #14b8a6, transparent);
    height: 1px;
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: -200% 0; }
    50% { background-position: 200% 0; }
}

/* ===== Image hover effects ===== */
img {
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Button ripple effect ===== */
.btn-luxury {
    position: relative;
    overflow: hidden;
}

.btn-luxury::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-luxury:hover::before {
    width: 300px;
    height: 300px;
}

/* ===== Testimonial card ===== */
.testimonial-card {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.4));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== Decorative elements ===== */
.glow-teal {
    box-shadow: 0 0 40px rgba(20, 184, 166, 0.15);
}

.glow-amber {
    box-shadow: 0 0 40px rgba(245, 158, 11, 0.15);
}

/* ===== Smooth section transitions ===== */
section {
    position: relative;
}

/* ===== Custom focus styles ===== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 3px;
    border-radius: 4px;
}

/* ===== Loading state for images ===== */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.4s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* ===== Subtle parallax container ===== */
.hero-bg {
    will-change: transform;
}