/* --- PALETA ARQUITECTÓNICA PERSIANAS DAVIBANK --- */
:root {
    --bg-clean: #fcfcfc;          /* Blanco hueso muy limpio */
    --surface-light: #f5f5f7;    /* Gris platino suave */
    --davibank-red: #e11d48;     /* Rojo Davibank de acento */
    --text-main: #1d1d1f;        /* Gris casi negro elegante */
    --text-muted: #6e6e73;       /* Gris para descripciones */
    --border-color: #e5e5ea;     /* Líneas divisorias finas */
    --font-serif: 'Cinzel', serif;
    --font-sans: 'Montserrat', sans-serif;
    --transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-clean);
    color: var(--text-main);
    font-family: var(--font-sans);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- MENÚ SUPERIOR FLOTANTE TRANSLÚCIDO --- */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(252, 252, 252, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 8%;
    z-index: 1000;
    transition: var(--transition);
}

.brand-logo {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.brand-logo span {
    color: var(--davibank-red);
    font-weight: 400;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-action-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.nav-action-btn:hover {
    color: var(--text-main);
}

.nav-main-btn {
    background: var(--text-main);
    color: white;
    border: none;
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
}

.nav-main-btn:hover {
    background: var(--davibank-red);
    box-shadow: 0 4px 12px rgba(225, 29, 72, 0.2);
}

/* --- CONTENEDOR GENERAL --- */
.main-wrapper {
    padding-top: 80px; /* Espacio para la barra fija */
}

/* --- SECCIÓN HERO --- */
.hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    padding: 0 8%;
    background: linear-gradient(135deg, #ffffff 0%, #f4f4f6 100%);
}

.hero-inner {
    max-width: 750px;
}

.architecture-tag {
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 20px;
    font-weight: 500;
}

.main-title {
    font-family: var(--font-serif);
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 400;
    margin-bottom: 25px;
}

.main-title span {
    color: var(--davibank-red);
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 35px;
    font-weight: 300;
}

.explore-btn {
    background: transparent;
    border: 1px solid var(--text-main);
    color: var(--text-main);
    padding: 12px 30px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition);
}

.explore-btn:hover {
    background: var(--text-main);
    color: white;
}

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

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

.section-header h2 {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 400;
    margin-bottom: 10px;
}

.section-header p {
    color: var(--text-muted);
    font-weight: 300;
}

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

.showroom-card {
    height: 480px;
    background-size: cover;
    background-position: center;
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    transition: var(--transition);
}

/* Efecto persiana limpia: velo blanco translúcido en hover */
.card-content-holder {
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: 35px;
    border-top: 1px solid var(--border-color);
    transform: translateY(80px);
    transition: var(--transition);
}

.showroom-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

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

.card-content-holder h3 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 10px;
}

.card-content-holder p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 20px;
}

.card-action-link {
    background: transparent;
    border: none;
    color: var(--davibank-red);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- HISTORIA CON ACABADO EDITORIAL --- */
.history-section-clean {
    padding: 100px 8%;
    background: var(--surface-light);
}

.history-container {
    display: flex;
    align-items: center;
    gap: 80px;
}

.history-visual {
    flex: 1;
}

.history-visual img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
}

.history-details {
    flex: 1.2;
}

.sub-line {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 15px;
}

.history-details h2 {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 400;
    margin-bottom: 25px;
}

.history-details p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
    font-weight: 300;
}

.metrics-row {
    display: flex;
    gap: 50px;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

.metric-box .num {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--davibank-red);
    display: block;
}

.metric-box .lbl {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* --- MODAL BLANCO IMPECABLE --- */
.clean-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(29, 29, 31, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2000;
}

.modal-wrapper-inner {
    background: white;
    max-width: 460px;
    margin: 8% auto;
    padding: 45px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.modal-wrapper-inner h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 10px;
}

.modal-wrapper-inner p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 30px;
}

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

.input-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-main);
    font-weight: 500;
    display: block;
    margin-bottom: 8px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-clean);
    font-family: inherit;
    border-radius: 4px;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--text-main);
    background: white;
}

.form-submit-btn {
    width: 100%;
    background: var(--text-main);
    color: white;
    border: none;
    padding: 15px;
    font-family: var(--font-sans);
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    margin-top: 10px;
    transition: var(--transition);
}

.form-submit-btn:hover {
    background: var(--davibank-red);
}

.close-icon {
    position: absolute;
    right: 25px;
    top: 20px;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-muted);
}

.close-icon:hover {
    color: var(--text-main);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .main-title { font-size: 2.5rem; }
    .history-container { flex-direction: column; gap: 40px; }
    .top-navbar { padding: 15px 5%; }
}