/* ============================================================
   ARQ. SOFÍ DEMARIA — style.css  (mobile-first)
   ============================================================ */

/* ── VARIABLES ──────────────────────────────────────────── */
:root {
    --crema:      #f7f4f0;
    --arena:      #e8e0d5;
    --arena-mid:  #d4c8b8;
    --dorado:     #b8a99a;
    --dorado-deep:#8c7b6e;
    --grafito:    #2a2420;
    --gris:       #6b6258;
    --blanco:     #ffffff;

    --ff-display: 'Cormorant Garamond', Georgia, serif;
    --ff-body:    'Jost', sans-serif;

    --max-w:      1400px;
    --ease:       cubic-bezier(.25,.46,.45,.94);
    --t:          0.4s;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--ff-body);
    background: var(--crema);
    color: var(--grafito);
    line-height: 1.7;
    overflow-x: hidden;
    width: 100%;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* IMPORTANTE: font-size 16px en inputs evita zoom automático en iOS */
input, select, textarea, button {
    font-family: var(--ff-body);
    font-size: 16px;
}

/* ── CONTAINERS ─────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.container-wide {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 20px;
}

@media (min-width: 600px) {
    .container, .container-wide { padding: 0 32px; }
}
@media (min-width: 1024px) {
    .container { padding: 0 40px; }
    .container-wide { padding: 0 60px; }
}

/* ── NAVBAR ─────────────────────────────────────────────── */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 16px 20px;
    display: flex; align-items: center;
    transition: background var(--t) var(--ease),
                padding var(--t) var(--ease),
                box-shadow var(--t) var(--ease);
}
.navbar.scrolled {
    background: rgba(247,244,240,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 20px;
    box-shadow: 0 1px 0 var(--arena);
}

.nav-inner {
    width: 100%;
    display: flex; align-items: center; justify-content: space-between;
}

.logo { display: flex; flex-direction: column; }
.logo-name {
    font-family: var(--ff-display);
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--blanco);
    transition: color var(--t);
    line-height: 1.2;
}
.logo-title {
    font-size: 0.52rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
    transition: color var(--t);
}
.navbar.scrolled .logo-name  { color: var(--grafito); }
.navbar.scrolled .logo-title { color: var(--dorado-deep); }

/* Hamburger */
.nav-toggle {
    display: flex; flex-direction: column; gap: 5px;
    padding: 6px;
    z-index: 1100;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.nav-toggle span {
    display: block; width: 24px; height: 1.5px;
    background: var(--blanco);
    transition: all 0.35s var(--ease);
    transform-origin: center;
}
.navbar.scrolled .nav-toggle span { background: var(--grafito); }

/* Mobile nav overlay */
.nav-links {
    position: fixed; inset: 0;
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    gap: 28px;
    background: var(--grafito);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
    z-index: 1050;
}
.nav-links.open { transform: translateX(0); }
.nav-links a {
    font-size: 1.05rem;
    font-weight: 300;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--crema);
    position: relative;
    padding-bottom: 4px;
    -webkit-tap-highlight-color: transparent;
}
.nav-links a::after {
    content: '';
    position: absolute; bottom: 0; left: 0; right: 100%;
    height: 1px; background: var(--dorado);
    transition: right 0.3s var(--ease);
}
.nav-links a:active::after { right: 0; }

/* Desktop nav */
@media (min-width: 900px) {
    .navbar { padding: 24px 60px; }
    .navbar.scrolled { padding: 16px 60px; }
    .logo-name  { font-size: 1.4rem; }
    .logo-title { font-size: 0.65rem; }

    .nav-toggle { display: none; }

    .nav-links {
        position: static;
        flex-direction: row;
        background: transparent;
        transform: none;
        gap: 40px;
    }
    .nav-links a {
        font-size: 0.75rem;
        color: rgba(255,255,255,0.85);
    }
    .nav-links a:hover::after { right: 0; }
    .navbar.scrolled .nav-links a { color: var(--gris); }
    .navbar.scrolled .nav-links a:hover { color: var(--grafito); }
}

/* ── HERO ────────────────────────────────────────────────── */
.hero {
    position: relative;
    height: 100svh;
    min-height: 500px;
    overflow: hidden;
}
.hero-slider { position: absolute; inset: 0; }
.hero-slide {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    opacity: 0;
    transition: opacity 1.2s var(--ease);
}
.hero-slide.active { opacity: 1; }

.hero-slide:nth-child(1) { background-color: #3a3028; }
.hero-slide:nth-child(2) { background-color: #4a3f35; }
.hero-slide:nth-child(3) { background-color: #2e2420; }

.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(26,20,15,0.25) 0%,
        rgba(26,20,15,0.1)  40%,
        rgba(26,20,15,0.65) 100%
    );
}

.hero-content {
    position: relative; z-index: 2;
    height: 100%;
    display: flex; flex-direction: column;
    justify-content: flex-end;
    padding: 0 20px 80px;
    animation: fadeUp 1.2s var(--ease) 0.3s both;
}

.hero-eyebrow {
    font-size: 0.6rem;
    font-weight: 400;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--dorado);
    margin-bottom: 12px;
}

.hero-title {
    font-family: var(--ff-display);
    font-size: clamp(2.6rem, 11vw, 7rem);
    font-weight: 300;
    line-height: 1.05;
    color: var(--blanco);
    margin-bottom: 30px;
}
.hero-title em {
    font-style: italic;
    color: #d4b8a8;
    text-shadow: 0 2px 20px rgba(0,0,0,0.4);
    display: block;
}

.btn-hero {
    display: inline-flex; align-items: center;
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--blanco);
    border: 1px solid rgba(255,255,255,0.5);
    padding: 14px 26px;
    transition: all 0.3s var(--ease);
    align-self: flex-start;
    -webkit-tap-highlight-color: transparent;
}
.btn-hero:active { background: var(--blanco); color: var(--grafito); }

.hero-dots {
    position: absolute; bottom: 24px; right: 20px;
    z-index: 3;
    display: flex; gap: 8px;
}
.dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all 0.3s;
    -webkit-tap-highlight-color: transparent;
    /* área táctil mayor */
    padding: 6px;
    margin: -6px;
}
.dot.active { background: var(--dorado); transform: scale(1.4); }

@media (min-width: 768px) {
    .hero-content { padding: 0 48px 100px; }
    .hero-dots    { right: 48px; bottom: 40px; }
    .hero-title em { display: inline; }
    .btn-hero:hover { background: var(--blanco); color: var(--grafito); border-color: var(--blanco); }
}
@media (min-width: 1024px) {
    .hero-content { padding: 0 80px 100px; }
    .hero-dots    { right: 80px; }
}

/* ── INTRO STRIP ─────────────────────────────────────────── */
.intro-strip { background: var(--grafito); }
.intro-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.08);
}
.intro-item {
    display: flex; flex-direction: column; align-items: center;
    padding: 28px 16px;
    background: var(--grafito);
}
.intro-num {
    font-family: var(--ff-display);
    font-size: 1.9rem;
    font-weight: 300;
    color: var(--dorado);
    letter-spacing: 0.05em;
    line-height: 1;
}
.intro-label {
    font-size: 0.56rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.45);
    margin-top: 8px;
    text-align: center;
    line-height: 1.5;
}

@media (min-width: 640px) {
    .intro-grid { grid-template-columns: repeat(4, 1fr); }
    .intro-item { padding: 36px 24px; }
    .intro-num  { font-size: 2.2rem; }
    .intro-label { font-size: 0.65rem; }
}

/* ── SECTION SHARED ──────────────────────────────────────── */
.section { padding: 64px 0; }

.section-header { margin-bottom: 36px; }
.section-header.centered { text-align: center; }

.section-tag {
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--dorado-deep);
    margin-bottom: 12px;
    display: block;
}
.section-title {
    font-family: var(--ff-display);
    font-size: clamp(2rem, 7vw, 4rem);
    font-weight: 300;
    line-height: 1.15;
    color: var(--grafito);
}
.section-title em { font-style: italic; color: var(--dorado-deep); }

@media (min-width: 1024px) {
    .section { padding: 120px 0; }
    .section-header { margin-bottom: 64px; }
}

/* ── PORTFOLIO GRID ──────────────────────────────────────── */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3px;
}
.portfolio-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}
.portfolio-item.large { aspect-ratio: 4/3; }

.portfolio-img {
    width: 100%; height: 100%;
    background-size: cover; background-position: center;
    background-color: var(--arena);
    transition: transform 0.7s var(--ease);
}
.portfolio-item:active .portfolio-img,
.portfolio-item:hover  .portfolio-img { transform: scale(1.04); }

.portfolio-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(
        to top,
        rgba(26,20,15,0.88) 0%,
        rgba(26,20,15,0.15) 55%,
        transparent 100%
    );
    display: flex; align-items: flex-end;
    padding: 20px;
    opacity: 1; /* siempre visible en mobile */
}

.portfolio-cat {
    font-size: 0.56rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--dorado);
    margin-bottom: 5px;
}
.portfolio-name {
    font-family: var(--ff-display);
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--blanco);
    margin-bottom: 3px;
    line-height: 1.2;
}
.portfolio-loc {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.65);
}

@media (min-width: 600px) {
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
    .portfolio-item.large { grid-column: span 2; aspect-ratio: 16/9; }
}
@media (min-width: 1024px) {
    .portfolio-grid { grid-template-columns: repeat(3, 1fr); }
    .portfolio-overlay { opacity: 0; padding: 32px; }
    .portfolio-item:hover .portfolio-overlay { opacity: 1; }
    .portfolio-name { font-size: 1.6rem; }
}

/* ── ESTUDIO ─────────────────────────────────────────────── */
.estudio { background: var(--blanco); }

.estudio-grid {
    display: flex; flex-direction: column;
    gap: 48px;
}

.estudio-img-wrap {
    position: relative;
    padding-bottom: 20px;
    padding-right: 20px;
}
.estudio-img {
    width: 100%;
    aspect-ratio: 4/5;
    object-fit: cover;
    position: relative; z-index: 1;
    display: block;
    /* placeholder */
    background: linear-gradient(135deg, var(--arena) 0%, var(--dorado) 100%);
    min-height: 260px;
}
.estudio-img-accent {
    position: absolute; bottom: 0; right: 0;
    width: 65%; height: 65%;
    background: var(--arena); z-index: 0;
}

.estudio-body {
    color: var(--gris);
    margin-bottom: 14px;
    font-size: 0.97rem;
    line-height: 1.85;
}
.estudio-tags {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin: 20px 0 28px;
}
.estudio-tags span {
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dorado-deep);
    border: 1px solid var(--arena-mid);
    padding: 7px 13px;
    background: var(--crema);
}

.btn-outline {
    display: inline-flex;
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--grafito);
    border: 1px solid var(--grafito);
    padding: 14px 28px;
    transition: all 0.3s var(--ease);
    align-self: flex-start;
    -webkit-tap-highlight-color: transparent;
}
.btn-outline:active,
.btn-outline:hover { background: var(--grafito); color: var(--blanco); }

@media (min-width: 900px) {
    .estudio-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 80px;
        align-items: center;
    }
    .estudio-img-wrap { padding-bottom: 32px; padding-right: 32px; }
}
@media (min-width: 1200px) {
    .estudio-grid { gap: 100px; }
    .estudio-img-wrap { padding-bottom: 40px; padding-right: 40px; }
}

/* ── SERVICIOS ───────────────────────────────────────────── */
.servicios { background: var(--crema); }

.servicios-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
    background: var(--arena);
}
.servicio-card {
    background: var(--crema);
    padding: 32px 24px;
    transition: background 0.3s var(--ease);
}
.servicio-card:active,
.servicio-card:hover { background: var(--blanco); }

.servicio-icon {
    width: 42px; height: 42px;
    margin-bottom: 18px;
    color: var(--dorado);
}
.servicio-icon svg { width: 100%; height: 100%; }

.servicio-card h3 {
    font-family: var(--ff-display);
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--grafito);
    margin-bottom: 10px;
}
.servicio-card p {
    font-size: 0.86rem;
    color: var(--gris);
    line-height: 1.8;
}

@media (min-width: 600px) {
    .servicios-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
    .servicios-grid { grid-template-columns: repeat(3, 1fr); }
    .servicio-card  { padding: 48px 40px; }
    .servicio-icon  { width: 48px; height: 48px; }
    .servicio-card h3 { font-size: 1.3rem; }
}

/* ── FRASE ───────────────────────────────────────────────── */
.frase-section {
    background: var(--grafito);
    padding: 64px 0;
}
.frase {
    font-family: var(--ff-display);
    font-size: clamp(1.45rem, 5vw, 2.8rem);
    font-weight: 300;
    font-style: italic;
    color: var(--blanco);
    text-align: center;
    line-height: 1.5;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}
.frase cite {
    display: block;
    font-family: var(--ff-body);
    font-size: 0.62rem;
    font-weight: 400;
    font-style: normal;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--dorado);
    margin-top: 24px;
}

@media (min-width: 768px) {
    .frase-section { padding: 100px 0; }
}

/* ── CONTACTO ────────────────────────────────────────────── */
.contacto { background: var(--blanco); }

.contacto-grid {
    display: flex; flex-direction: column;
    gap: 48px;
}

.contacto-body {
    color: var(--gris);
    margin: 14px 0 28px;
    font-size: 0.97rem;
    line-height: 1.8;
}
.contacto-datos {
    display: flex; flex-direction: column; gap: 16px;
    margin-bottom: 28px;
}
.dato {
    display: flex; align-items: center; gap: 14px;
    font-size: 0.88rem;
    color: var(--gris);
    word-break: break-all;
}
.dato svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--dorado); }
.dato a:hover { color: var(--grafito); }

.instagram-link {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--dorado-deep);
    transition: color 0.3s;
}
.instagram-link svg { width: 18px; height: 18px; flex-shrink: 0; }
.instagram-link:hover { color: var(--grafito); }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row     { display: flex; flex-direction: column; gap: 16px; }
.form-group   { display: flex; flex-direction: column; gap: 7px; }

.form-group label {
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--dorado-deep);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--crema);
    border: 1px solid var(--arena-mid);
    border-radius: 2px;
    padding: 14px 16px;
    font-size: 16px; /* evita zoom en iOS */
    color: var(--grafito);
    outline: none;
    transition: border-color 0.3s var(--ease);
    -webkit-appearance: none;
    width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--dorado);
    background: var(--blanco);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b8a99a' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    padding-right: 42px;
    cursor: pointer;
}

.btn-submit {
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--blanco);
    background: var(--grafito);
    border: 1px solid var(--grafito);
    padding: 16px 32px;
    width: 100%; /* full en mobile */
    cursor: pointer;
    transition: all 0.3s var(--ease);
    -webkit-tap-highlight-color: transparent;
}
.btn-submit:active,
.btn-submit:hover {
    background: var(--dorado-deep);
    border-color: var(--dorado-deep);
}

.form-msg {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 16px 18px;
    margin-bottom: 16px;
    font-size: 0.88rem;
    line-height: 1.6;
}
.form-msg.success {
    background: #e8f4e8;
    border-left: 3px solid #4caf50;
    color: #2e7d32;
}
.form-msg.success svg {
    width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; stroke: #4caf50;
}
.form-msg.error-msg {
    background: #fbe9e7;
    border-left: 3px solid #e57373;
    color: #c62828;
}

@media (min-width: 600px) {
    .form-row { flex-direction: row; }
    .form-row .form-group { flex: 1; }
    .btn-submit { width: auto; }
}
@media (min-width: 1024px) {
    .contacto-grid {
        display: grid;
        grid-template-columns: 1fr 1.3fr;
        gap: 100px;
        align-items: start;
    }
}

/* ── FOOTER ──────────────────────────────────────────────── */
.footer {
    background: var(--grafito);
    padding: 48px 0;
}
.footer-inner {
    display: flex; flex-direction: column;
    align-items: center; gap: 24px;
    text-align: center;
}
.footer-name {
    font-family: var(--ff-display);
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--blanco);
}
.footer-tagline {
    font-size: 0.58rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--dorado);
    margin-top: 5px;
}
.footer-nav {
    display: flex; flex-wrap: wrap;
    justify-content: center; gap: 16px 24px;
}
.footer-nav a {
    font-size: 0.6rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.45);
    transition: color 0.3s;
}
.footer-nav a:hover { color: var(--blanco); }
.footer-copy {
    font-size: 0.58rem;
    color: rgba(255,255,255,0.28);
    letter-spacing: 0.04em;
}

@media (min-width: 1024px) {
    .footer { padding: 60px 0; }
    .footer-inner {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        align-items: center;
        text-align: left;
        gap: 40px;
    }
    .footer-copy { text-align: right; }
}

/* ── WHATSAPP BTN ────────────────────────────────────────── */
.whatsapp-btn {
    position: fixed;
    bottom: 20px; right: 16px;
    z-index: 999;
    display: flex; align-items: center; justify-content: center;
    background: #25d366;
    color: var(--blanco);
    border-radius: 50%;
    width: 54px; height: 54px;
    box-shadow: 0 4px 20px rgba(37,211,102,0.45);
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
    -webkit-tap-highlight-color: transparent;
    overflow: hidden;
}
.whatsapp-btn:active { transform: scale(0.93); }
.whatsapp-btn svg { width: 26px; height: 26px; flex-shrink: 0; }
.whatsapp-btn span { display: none; }

@media (min-width: 768px) {
    .whatsapp-btn {
        bottom: 32px; right: 32px;
        width: auto; height: auto;
        border-radius: 50px;
        padding: 14px 22px 14px 18px;
        max-width: 54px;
        font-size: 0.8rem;
        font-weight: 500;
        letter-spacing: 0.05em;
        overflow: hidden;
        white-space: nowrap;
        transition: max-width 0.35s var(--ease), box-shadow 0.3s var(--ease);
    }
    .whatsapp-btn span {
        display: block;
        overflow: hidden;
        opacity: 0;
        max-width: 0;
        transition: opacity 0.3s var(--ease), max-width 0.35s var(--ease);
    }
    .whatsapp-btn:hover {
        max-width: 200px;
        box-shadow: 0 8px 32px rgba(37,211,102,0.45);
    }
    .whatsapp-btn:hover span { opacity: 1; max-width: 120px; }
}

/* ── ANIMATIONS ──────────────────────────────────────────── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}