:root {
    --bg-dark: #121315;          /* Gris carbón de fundición */
    --surface-light: #f4f5f7;    /* Gris platino limpio */
    --iron-orange: #d97706;      /* Ámbar / Óxido controlado para acentos */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #cbd5e1;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--surface-light);
    color: var(--text-main);
    font-family: var(--font-body);
}

.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-dark);
    padding: 18px 8%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 3px solid var(--iron-orange);
    z-index: 1000;
}

.brand-logo {
    font-family: var(--font-heading);
    color: white;
    font-size: 1.5rem;
    letter-spacing: 2px;
}

.brand-logo span {
    color: var(--iron-orange);
}

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-action-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.nav-action-btn:hover {
    color: white;
}

.nav-main-btn {
    background: var(--iron-orange);
    color: white;
    border: none;
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    transition: var(--transition);
}

.nav-main-btn:hover {
    background: #b45309;
    box-shadow: 0 4px 15px rgba(217, 119, 6, 0.3);
}

.main-wrapper {
    padding-top: 80px;
}

.hero-section {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 60px 8%;
    background: linear-gradient(rgba(18, 19, 21, 0.92), rgba(18, 19, 21, 0.95)), 
                url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&q=80&w=1500');
    background-size: cover;
    background-position: center;
    color: white;
}

.hero-inner {
    max-width: 800px;
}

.architecture-tag {
    font-family: var(--font-heading);
    color: var(--iron-orange);
    letter-spacing: 3px;
    display: block;
    margin-bottom: 20px;
}

.main-title {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 25px;
    text-transform: uppercase;
}

.main-title span {
    color: transparent;
    -webkit-text-stroke: 1px white;
}

.hero-description {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #cbd5e1;
    margin-bottom: 30px;
    font-weight: 300;
}

.hero-description strong {
    color: white;
    font-weight: 600;
}

.invitation-box {
    background: rgba(217, 119, 6, 0.1);
    border-left: 4px solid var(--iron-orange);
    padding: 15px 20px;
    margin-bottom: 35px;
}

.explore-btn {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 12px 30px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.explore-btn:hover {
    background: white;
    color: var(--bg-dark);
}

/* --- SHOWROOM --- */
.catalog-section {
    padding: 100px 8%;
    background: white;
}

.section-header {
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.showroom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.showroom-card {
    height: 450px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.card-content-holder {
    width: 100%;
    background: rgba(18, 19, 21, 0.98);
    padding: 30px;
    color: white;
    transform: translateY(70px);
    border-top: 2px solid var(--iron-orange);
    transition: var(--transition);
}

.showroom-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.showroom-card:hover .card-content-holder {
    transform: translateY(0);
}

.card-content-holder h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    text-transform: uppercase;
    margin-bottom: 10px;
    color: var(--iron-orange);
}

.card-content-holder p {
    font-size: 0.88rem;
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 20px;
}

.card-action-link {
    background: transparent;
    border: none;
    color: white;
    font-family: var(--font-heading);
    font-size: 1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
}

/* --- MODAL --- */
.clean-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 2000;
}

.modal-wrapper-inner {
    background: white;
    max-width: 450px;
    margin: 10% auto;
    padding: 40px;
    border-top: 4px solid var(--iron-orange);
    position: relative;
    text-align: center;
}

.modal-wrapper-inner h3 {
    font-family: var(--font-heading);
    font-size: 2rem;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.modal-wrapper-inner p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    display: block;
    margin-bottom: 5px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    font-family: inherit;
}

.form-submit-btn {
    width: 100%;
    background: var(--bg-dark);
    color: white;
    border: none;
    padding: 15px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
}

.form-submit-btn:hover {
    background: var(--iron-orange);
}

.close-icon {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 1.8rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .main-title { font-size: 2.4rem; }
    .top-navbar { padding: 15px 5%; }
}