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

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(212, 168, 75, 0.3);
    color: #fff;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #1A0E18;
}
::-webkit-scrollbar-thumb {
    background: #4A2C4A;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #D4A84B;
}

/* ===== Animations ===== */
@keyframes scroll-indicator {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(200%); }
}

.animate-scroll-indicator {
    animation: scroll-indicator 1.5s ease-in-out infinite;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== Scroll Reveal ===== */
.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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ===== Navigation ===== */
#navbar {
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease, padding 0.4s ease;
}

#navbar.scrolled {
    background: rgba(26, 14, 24, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(212, 168, 75, 0.1);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #D4A84B;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #D4A84B !important;
}

/* ===== Mobile Menu ===== */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

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

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

/* ===== Hamburger ===== */
.menu-line {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-btn.active .menu-line:nth-child(3) {
    width: 20px;
    transform: rotate(-45deg) translate(3px, -3px);
}

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #D4A84B, transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* ===== Property Cards ===== */
.property-card {
    position: relative;
}

.property-card img {
    will-change: transform;
}

/* ===== Buttons ===== */
button[type="submit"],
a[href="#contacto"] {
    position: relative;
    overflow: hidden;
}

button[type="submit"]::before,
a[href="#contacto"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

button[type="submit"]:hover::before,
a[href="#contacto"]:hover::before {
    left: 100%;
}

/* ===== Form Inputs ===== */
input:focus,
textarea:focus,
select:focus {
    box-shadow: 0 0 0 1px rgba(212, 168, 75, 0.3);
}

/* ===== Divider ===== */
.w-20 {
    transition: width 0.3s ease;
}

section:hover .w-20 {
    width: 4rem;
}

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

    .font-serif {
        line-height: 1.1;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}