/* ==========================================================================
   tú17 Creative Studio - CSS System (Minimalist & Premium Style)
   ========================================================================== */

/* Variables del Sistema de Diseño */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9f9fb;
    --bg-tertiary: #f1f2f5;
    
    --text-primary: #111111;
    --text-secondary: #555555;
    --text-muted: #888888;
    --text-light: #ffffff;
    
    --border-color: #e5e7eb;
    --border-color-hover: #111111;
    
    --font-title: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --transition-smooth: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.02);
    --shadow-medium: 0 10px 30px rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Tipografías y Encabezados */
h1, h2, h3, h4 {
    font-family: var(--font-title);
    font-weight: 600;
    line-height: 1.25;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    letter-spacing: -0.01em;
}

p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 300;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

/* Estructura y Contenedores */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: clamp(4rem, 8vw, 8rem) 0;
}

.text-center {
    text-align: center;
}

.subtitle {
    display: inline-block;
    font-family: var(--font-title);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.subtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 1px;
    background-color: var(--text-primary);
}

.section-desc {
    max-width: 600px;
    margin: 0 auto 4rem auto;
    font-size: 1.15rem;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

/* Botones Premium */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2rem;
    font-family: var(--font-title);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 1rem;
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--text-primary);
    color: var(--text-light);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: var(--text-primary);
    color: var(--text-light);
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ==========================================================================
   Cabecera y Navegación
   ========================================================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

/* Logotipo */
.logo {
    display: inline-flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.logo:hover {
    opacity: 0.8;
}

.logo-img {
    max-height: 48px;
    width: auto;
    display: block;
}

/* Navegación */
.main-nav ul {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 2.5rem;
}

.main-nav a {
    font-family: var(--font-title);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 0.5rem 0;
}

.main-nav a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1.5px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

.main-nav a:not(.btn):hover::after {
    width: 100%;
}

/* Botón Hamburguesa Móvil */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 22px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

/* ==========================================================================
   Sección Hero
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    background: radial-gradient(circle at 80% 20%, rgba(240, 240, 245, 0.5) 0%, rgba(255, 255, 255, 1) 70%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.geometric-shapes {
    animation: rotateSlow 40s linear infinite;
    max-width: 320px;
}

@keyframes rotateSlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   Sección Servicios
   ========================================================================== */
.services-section {
    background-color: var(--bg-secondary);
}

/* Tarjeta Destacada (Core Service) */
.core-service-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
    box-shadow: var(--shadow-subtle);
    transition: var(--transition-smooth);
}

.core-service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--border-color-hover);
}

.tag-core {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background-color: var(--text-primary);
    color: var(--text-light);
    border-radius: 50px;
    font-size: 0.75rem;
    font-family: var(--font-title);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.core-service-info h3 {
    margin-bottom: 1rem;
}

.core-service-info p {
    font-size: 1.1rem;
    max-width: 800px;
}

.core-service-graphic {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Cuadrícula de Servicios Individuales */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-medium);
}

.service-icon {
    width: 64px;
    height: 64px;
    background-color: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.service-card p {
    font-size: 0.95rem;
}

/* ==========================================================================
   Sección Portafolio (Collage Visual)
   ========================================================================== */
.portfolio-grid-collage {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.portfolio-collage-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    background-color: var(--bg-primary);
    aspect-ratio: 4/3;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    cursor: pointer;
}

.portfolio-collage-item svg,
.portfolio-collage-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
    display: block;
}

.portfolio-collage-item:hover {
    transform: translateY(-8px);
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-medium);
}

.portfolio-collage-item:hover svg,
.portfolio-collage-item:hover img {
    transform: scale(1.05);
}

/* ==========================================================================
   Sección Blog
   ========================================================================== */
.blog-section {
    background-color: var(--bg-secondary);
}

.section-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 4rem;
}

.section-header-row .section-header {
    margin-bottom: 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.blog-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-medium);
}

.blog-card-image {
    aspect-ratio: 16/9;
    border-bottom: 1px solid var(--border-color);
}

.blog-card-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex-grow: 1;
}

.blog-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.blog-card-info h3 {
    font-size: 1.25rem;
    line-height: 1.35;
}

.blog-card-info p {
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more-link {
    margin-top: auto;
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more-link::after {
    content: '→';
    transition: var(--transition-smooth);
}

.blog-card:hover .read-more-link::after {
    transform: translateX(4px);
}

.loading-text {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 0;
}

/* ==========================================================================
   Sección Contacto (Google Forms Integrado)
   ========================================================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
}

.contact-info {
    position: sticky;
    top: 120px;
}

.contact-info h2 {
    margin-bottom: 1.5rem;
}

.contact-info p {
    font-size: 1.15rem;
    margin-bottom: 3rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.detail-item svg {
    flex-shrink: 0;
}

/* Formulario Minimalista */
.contact-form-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-subtle);
}

.styled-form {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    padding: 0.9rem 1.2rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    outline: none;
    width: 100%;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--border-color-hover);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.03);
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='black' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Mensaje de Éxito */
.form-response-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 1rem;
    padding: 2rem 0;
    animation: fadeIn 0.4s ease forwards;
}

.form-response-message svg {
    margin-bottom: 0.5rem;
}

.form-response-message h3 {
    font-size: 1.5rem;
}

.form-response-message p {
    font-size: 1rem;
    max-width: 320px;
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.main-footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem 0;
    background-color: var(--bg-primary);
}

.footer-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-brand p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.made-with {
    font-family: var(--font-title);
    font-weight: 500;
}

/* ==========================================================================
   Diseño Responsivo (Mobile & Tablet)
   ========================================================================== */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .core-service-card {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2.5rem;
    }
    
    .core-service-graphic {
        display: none;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .contact-info {
        position: static;
        text-align: center;
    }
    
    .contact-details {
        align-items: center;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-primary);
        padding: 3rem 2rem;
        transform: translateX(100%);
        transition: var(--transition-smooth);
        border-top: 1px solid var(--border-color);
    }
    
    .main-nav.active {
        transform: translateX(0);
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
    
    .main-nav a {
        font-size: 1.5rem;
        width: 100%;
    }
    
    .main-nav .btn {
        width: 100%;
        text-align: center;
        padding: 1rem;
    }
    
    /* Menú móvil abierto (Animación del botón hamburguesa) */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .section-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* ==========================================================================
   Animaciones de Revelación (Fase 6)
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-45px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-right {
    opacity: 0;
    transform: translateX(45px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.active,
.reveal-left.active,
.reveal-right.active {
    opacity: 1;
    transform: translate(0, 0);
}

/* Retrasos progresivos para elementos en cuadrícula (grid) */
.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.2s; }
.services-grid .service-card:nth-child(4) { transition-delay: 0.3s; }

.portfolio-grid-collage .portfolio-collage-item:nth-child(2) { transition-delay: 0.15s; }
.portfolio-grid-collage .portfolio-collage-item:nth-child(3) { transition-delay: 0.3s; }
.portfolio-grid-collage .portfolio-collage-item:nth-child(4) { transition-delay: 0.45s; }

/* Enlace de atribución en el footer */
.logo-link {
    display: inline-flex;
    align-items: center;
    border-bottom: none !important;
    text-decoration: none !important;
}
.logo-link:hover {
    border-bottom: none !important;
    opacity: 0.8;
}
.logo-link img {
    height: 16px; /* Altura proporcional y balanceada con el texto de la firma */
    width: auto;
    vertical-align: middle;
    margin-left: 4px;
    border: none;
    outline: none;
    text-decoration: none;
}

/* Texto de Copyright más pequeño */
.footer-bottom p:first-child {
    font-size: 0.72rem;
    opacity: 0.75;
    letter-spacing: 0.02em;
}

/* ==========================================================================
   Banner de Cookies (Legalidad)
   ========================================================================== */
.cookie-banner {
    position: fixed;
    bottom: 24px;
    right: 24px;
    left: 24px;
    max-width: 480px;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    padding: 1.5rem;
    z-index: 9999;
    animation: slideUpCookie 0.5s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.cookie-banner-content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.cookie-banner-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.cookie-banner-buttons {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 1.5rem;
}

.cookie-banner-link {
    font-family: var(--font-title);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    text-decoration: underline;
}

.cookie-banner-hidden {
    animation: slideDownCookie 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

@keyframes slideUpCookie {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDownCookie {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(50px); }
}

@media (min-width: 768px) {
    .cookie-banner {
        left: auto;
        right: 24px;
    }
}

/* ==========================================================================
   Redes Sociales (Footer)
   ========================================================================== */
.footer-socials {
    display: flex;
    gap: 1.25rem;
    margin-top: 1rem;
}

.social-icon-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.social-icon-link svg {
    transition: var(--transition-smooth);
}

.social-icon-link:hover {
    background-color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateY(-3px);
}

.social-icon-link:hover svg {
    stroke: var(--text-light);
    fill: var(--text-light);
}

/* ==========================================================================
   Optimización de Menú Móvil (Cascada & Animación Premium)
   ========================================================================== */
@media (max-width: 768px) {
    .main-nav {
        background-color: rgba(255, 255, 255, 0.95) !important;
        backdrop-filter: blur(24px) !important;
        -webkit-backdrop-filter: blur(24px) !important;
        border-top: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .main-nav ul li {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

    .main-nav.active ul li {
        opacity: 1;
        transform: translateY(0);
    }

    /* Retrasos progresivos para los enlaces del menú móvil */
    .main-nav.active ul li:nth-child(1) { transition-delay: 0.1s; }
    .main-nav.active ul li:nth-child(2) { transition-delay: 0.18s; }
    .main-nav.active ul li:nth-child(3) { transition-delay: 0.26s; }
    .main-nav.active ul li:nth-child(4) { transition-delay: 0.34s; }
    .main-nav.active ul li:nth-child(5) { transition-delay: 0.42s; }
}