/* ─── Base & 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(161, 29, 62, 0.15);
    color: #3d0b18;
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    background: #a11d3e;
    color: #faf8f6;
    padding: 14px 32px;
    border-radius: 100px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid #a11d3e;
    cursor: pointer;
}

.btn-primary:hover {
    background: #3d0b18;
    border-color: #3d0b18;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(61, 11, 24, 0.25);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    background: transparent;
    color: #a11d3e;
    padding: 14px 32px;
    border-radius: 100px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid #a11d3e;
    cursor: pointer;
}

.btn-secondary:hover {
    background: #a11d3e;
    color: #faf8f6;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(161, 29, 62, 0.2);
}

/* ─── Navbar ────────────────────────────────────────────── */
#navbar {
    background: rgba(250, 248, 246, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(161, 29, 62, 0.08);
}

#navbar.scrolled {
    background: rgba(250, 248, 246, 0.95);
    box-shadow: 0 1px 0 rgba(161, 29, 62, 0.08);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #a11d3e;
    transition: width 0.3s ease;
}

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

/* ─── Mobile Menu ───────────────────────────────────────── */
.mobile-link {
    position: relative;
}

/* ─── Floating Cards ────────────────────────────────────── */
.card-float-1 {
    animation: float1 6s ease-in-out infinite;
}

.card-float-2 {
    animation: float2 7s ease-in-out infinite;
}

.card-float-3 {
    animation: float3 5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}

/* ─── Scroll Indicator ──────────────────────────────────── */
.animate-scroll-line {
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ─── Scroll Reveal (progressive enhancement) ───────────── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                    transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .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; }
}

/* Reduced motion: ensure everything is visible */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
    .card-float-1, .card-float-2, .card-float-3 {
        animation: none;
    }
    .animate-scroll-line {
        animation: none;
        opacity: 0.5;
    }
}

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

::-webkit-scrollbar-track {
    background: #faf8f6;
}

::-webkit-scrollbar-thumb {
    background: #f5a8ba;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #dc4b6e;
}

/* ─── Image placeholders ────────────────────────────────── */
img {
    max-width: 100%;
    height: auto;
}

/* ─── Focus styles ──────────────────────────────────────── */
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
button:focus-visible {
    outline: 2px solid #a11d3e;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ─── Smooth image loading ──────────────────────────────── */
img {
    transition: opacity 0.3s ease;
}

img[data-src] {
    opacity: 0;
}

img.loaded {
    opacity: 1;
}