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

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(168, 34, 61, 0.15);
    color: #3f0c18;
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal[data-reveal-delay="1"] { transition-delay: 0.1s; }
.reveal[data-reveal-delay="2"] { transition-delay: 0.2s; }
.reveal[data-reveal-delay="3"] { transition-delay: 0.3s; }
.reveal[data-reveal-delay="4"] { transition-delay: 0.4s; }
.reveal[data-reveal-delay="5"] { transition-delay: 0.5s; }
.reveal[data-reveal-delay="6"] { transition-delay: 0.6s; }

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

/* Initial state for reduced-motion friendly approach */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Navbar ─── */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(255, 252, 251, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(168, 34, 61, 0.08), 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* ─── Floating Cards ─── */
.floating-card-1 {
    animation: float-1 4s ease-in-out infinite;
}

.floating-card-2 {
    animation: float-2 5s ease-in-out infinite;
}

.floating-card-3 {
    animation: float-3 4.5s ease-in-out infinite;
}

@keyframes float-1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}

@keyframes float-2 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(-1deg); }
}

@keyframes float-3 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* ─── Mobile Menu ─── */
#mobile-menu {
    animation: slideDown 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.mobile-link {
    position: relative;
}

.mobile-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #a8223d;
    transition: width 0.3s ease;
}

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

/* ─── Button Hover Effects ─── */
a[href="#contact"],
button[type="submit"] {
    position: relative;
    overflow: hidden;
}

button[type="submit"]::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

button[type="submit"]:hover::after {
    opacity: 1;
}

/* ─── Input Focus ─── */
input:focus,
textarea:focus {
    box-shadow: 0 0 0 3px rgba(168, 34, 61, 0.1);
}

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

::-webkit-scrollbar-track {
    background: #fffcfb;
}

::-webkit-scrollbar-thumb {
    background: #fce7eb;
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: #fad0d9;
}

/* ─── Active nav link ─── */
.nav-link-active {
    color: #a8223d !important;
}

/* ─── Back to top button ─── */
#back-to-top {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
}

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

#back-to-top:hover {
    transform: translateY(-2px);
}

/* ─── 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;
    }
    
    .floating-card-1,
    .floating-card-2,
    .floating-card-3 {
        animation: none;
    }
}