/* ============================================
   U Space Studios — Custom Styles
   Clean Minimalist · Midnight Blue + Mint
   ============================================ */

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

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

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: rgba(45, 212, 191, 0.2);
    color: #2DD4BF;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #040B14;
}
::-webkit-scrollbar-thumb {
    background: rgba(45, 212, 191, 0.2);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(45, 212, 191, 0.4);
}

/* --- Hero Animations --- */
.hero-tag {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.hero-title {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

.hero-sub {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
}

.hero-ctas {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.8s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Scroll Reveal (progressive enhancement) --- */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .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; }
}

/* --- Navbar --- */
#navbar {
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
}

#navbar.scrolled {
    background: rgba(4, 11, 20, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* --- Mobile Menu --- */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

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

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

#mobileMenu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobileMenu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobileMenu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobileMenu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
#mobileMenu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

/* --- Menu Button --- */
.menu-line {
    display: block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}
#menuBtn.active .menu-line:nth-child(2) {
    opacity: 0;
}

/* --- Room Cards --- */
.room-card {
    transition: background-color 0.5s ease;
}

/* --- Feature Items --- */
.feature-item {
    transition: background-color 0.5s ease;
}

/* --- Form Select --- */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.3)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 2rem;
}

/* --- Utility --- */
.text-balance {
    text-wrap: balance;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}