/* Reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Smooth Scroll */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background-color: var(--color-dark);
    color: var(--color-light);
}

::-moz-selection {
    background-color: var(--color-dark);
    color: var(--color-light);
}

/* Variables */
:root {
    /* Fonts */
    --font-heading: "Cormorant Garamond", serif;
    --font-display: "Bodoni Moda", serif;
    --font-body: "Work Sans", sans-serif;

    /* Colors */
    --color-dark: #1a1a1a;
    --color-light: #fafaf9;
    --color-muted: #78716c;
    --color-border: #e7e5e4;
    --color-border-light: #f5f5f4;
    --color-accent: #b8860b;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Typography */
body {    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* header */

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 300;
    line-height: 1.1;
}

h1 { font-size: 4rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-muted);
}

/* Links */
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-base);
}

/* Logo & Branding */
.logo {
    text-decoration: none;
}

.logo__regular {
    font-family: var(--font-body);
    font-weight: 300;
    transition: color var(--transition-smooth);
}

.logo__italic {
    font-family: var(--font-display);
    font-style: italic;
    transition: color var(--transition-smooth);
}

.title__regular {
    font-family: var(--font-body);
    font-weight: 300;
}

.title__italic {
    font-family: var(--font-display);
    font-style: italic;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    transform: translateZ(0);
}

.btn:active {
    transform: scale(0.98);
}

.btn--primary {
    background-color: var(--color-dark);
    color: var(--color-light);
}

.btn--primary:hover {
    background-color: #2a2a2a;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-light);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn--secondary:hover {
    border-color: var(--color-light);
    background-color: rgba(255, 255, 255, 0.1);
}

.btn--dark {
    background-color: var(--color-dark);
    color: #fff;
}

.btn--dark:hover {
    background-color: #2a2a2a;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn--outline {
    background: transparent;
    color: var(--color-dark);
    border: 1px solid var(--color-dark);
}

.btn--outline:hover {
    background: var(--color-dark);
    color: #fff;
}

.btn--whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #25D366;
    color: #fff;
}

.btn--whatsapp:hover {
    background-color: #1ebe5d;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}

.btn--whatsapp svg {
    flex-shrink: 0;
}

/* Focus States (Accessibility) */
.btn:focus-visible,
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-dark);
    outline-offset: 3px;
}

/* Skip to Content (Accessibility) */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    background: var(--color-dark);
    color: var(--color-light);
    z-index: 9999;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: 1rem;
}

/* Underline Link Animation */
.link-underline {
    position: relative;
    display: inline-block;
}

.link-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-base);
}

.link-underline:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Fade In Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
}

.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Stagger children animations */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.is-visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.stagger-children.is-visible > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }

/* Image loading placeholder */
.img-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* Utilities */
.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 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;
    }
}