/* ===================================
   Kei2Beauty — Custom Styles
   =================================== */

/* Base */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0f1824;
}
::-webkit-scrollbar-thumb {
    background: #1a2838;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #243a54;
}

/* Selection */
::selection {
    background: rgba(80, 191, 127, 0.3);
    color: #0f1824;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #34a864;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

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

/* Mobile Menu */
#mobile-menu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Hero
   =================================== */
#hero {
    position: relative;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 16, 25, 0.4) 0%,
        rgba(10, 16, 25, 0.2) 40%,
        rgba(10, 16, 25, 0.3) 70%,
        rgba(10, 16, 25, 0.8) 100%
    );
    z-index: 1;
}

#hero > .relative {
    position: relative;
    z-index: 2;
}

/* ===================================
   Service Cards
   =================================== */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #a8e6c3, #34a864);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

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

/* ===================================
   Gallery
   =================================== */
.gallery-item {
    position: relative;
    cursor: pointer;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(10, 16, 25, 0.4) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* ===================================
   Scroll Animations
   (Progressive Enhancement — hidden by default, revealed by JS)
   =================================== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s ease, transform 0.8s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }
}

/* If JS is disabled, all content is visible by default (already in default state) */
.no-js .reveal {
    opacity: 1;
    transform: none;
}

/* ===================================
   Form
   =================================== */
input:focus,
select:focus,
textarea:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 168, 100, 0.15);
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }
}