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

html {
    scroll-behavior: smooth;
    text-size-adjust: 100%;
}

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

img {
    display: block;
    max-width: 100%;
    height: auto;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-surface: #121212;
    --bg-card: #181818;
    --text-main: #ffffff;
    --text-muted: #8e8e93;
    --accent: #ffffff;
    --border-color: #222222;
    --font-base: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --max-width: 1240px;
    --header-height: 80px;
    --transition-smooth: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

/* ========== NAVBAR ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.navbar-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.brand-title {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: none;
    margin-right: 0;
}

/* Language switch junto al título */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: auto; /* empuja REEL y CONTACTO a la derecha */
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    transition: opacity var(--transition-smooth);
}

.nav-links a:hover {
    opacity: 0.6;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 14px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle .bar {
    width: 100%;
    height: 1.5px;
    background-color: var(--text-main);
    transition: transform var(--transition-smooth), opacity var(--transition-smooth);
    transform-origin: left center;
}

.menu-toggle.open .bar:nth-child(1) {
    transform: rotate(45deg) translateY(-2px);
}

.menu-toggle.open .bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.menu-toggle.open .bar:nth-child(3) {
    transform: rotate(-45deg) translateY(2px);
}

/* ========== SIDEBAR ========== */
.sidebar-menu {
    position: fixed;
    top: 0;
    left: -320px;
    width: 320px;
    height: 100%;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    transition: transform var(--transition-smooth);
    z-index: 1050;
    padding-top: 110px;
}

.sidebar-menu.active {
    transform: translateX(320px);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.sidebar-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 16px 40px;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 2px;
    border-left: 2px solid transparent;
    transition: color var(--transition-smooth), background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.sidebar-link:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.03);
    border-left-color: var(--accent);
}

.sidebar-divider {
    height: 1px;
    background-color: #2a2a2a;
    width: 40%;
    margin: 12px 0 12px 40px;
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
    z-index: 1040;
    backdrop-filter: blur(4px);
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========== PORTFOLIO GRID ========== */
.portfolio-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 50px 30px;
}

.category-section {
    margin-bottom: 80px;
    scroll-margin-top: calc(var(--header-height) + 20px);
}

.category-title {
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 4px;
    margin-bottom: 35px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px 30px;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-smooth);
}

.project-card:hover {
    border-color: #444444;
}

.image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: #000;
    cursor: pointer;
    overflow: hidden;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.image-wrapper:hover img {
    transform: scale(1.04);
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.image-wrapper:hover .play-overlay {
    opacity: 1;
}

.play-overlay::after {
    content: '';
    width: 0;
    height: 0;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    border-left: 20px solid #ffffff;
    margin-left: 4px;
}

.image-wrapper.link-externo .play-overlay::after {
    content: '🔗';
    border: none;
    font-size: 32px;
    background: none;
    margin: 0;
    line-height: 1;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-title {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 20px 20px 6px 20px;
    line-height: 1.4;
}

.coeditor {
    font-style: italic;
    font-weight: normal;
}

.project-details {
    padding: 0 20px 20px 20px;
    flex-grow: 1;
}

.project-detail-line {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 3px;
}

/* ========== MODAL ========== */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(5, 5, 5, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
    z-index: 2000;
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    padding: 0 60px;
}

.modal-content {
    width: 100%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
}

.iframe-container {
    position: relative;
    width: 100%;
    background: #000;
}

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.modal-close {
    position: absolute;
    top: -45px;
    right: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
    transition: color var(--transition-smooth);
    z-index: 2100;
}

.modal-close::before {
    content: '✕';
}

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

.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    font-size: 48px;
    font-weight: 300;
    cursor: pointer;
    z-index: 2100;
    transition: color var(--transition-smooth), transform 0.2s;
}

.nav-btn:hover {
    color: #ffffff;
    transform: translateY(-50%) scale(1.1);
}

.prev {
    left: 10px;
}

.prev::before {
    content: '‹';
}

.next {
    right: 10px;
}

.next::before {
    content: '›';
}

/* ========== CONTACTO ========== */
.contact-section {
    border-top: 1px solid var(--border-color);
    padding: 80px 30px;
    text-align: center;
    background-color: var(--bg-surface);
}

.contact-content p {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
    color: var(--text-muted);
}

.contact-content p:first-child {
    color: var(--text-main);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1200px) {
    .modal-container { padding: 0 20px; }
    .prev { left: 0; }
    .next { right: 0; }
    .modal-close { top: -45px; right: 0; }
}

@media (max-width: 768px) {
    :root { --header-height: 70px; }
    .portfolio-container { padding: 40px 20px; }
    .projects-grid { grid-template-columns: 1fr; gap: 30px; }
    .brand-title { font-size: 0.85rem; letter-spacing: 1px; }
    .nav-links { display: none; }
    .sidebar-menu { width: 280px; left: -280px; }
    .sidebar-menu.active { transform: translateX(280px); }
    .sidebar-link { padding: 16px 30px; }
    .sidebar-divider { margin-left: 30px; }
    .modal-container { padding: 0 10px; }
    .nav-btn { font-size: 40px; }
    .modal-close { top: -40px; font-size: 28px; }
    .lang-switch {
        margin-right: 10px;
    }
}

@media (max-width: 480px) {
    .nav-btn { font-size: 36px; }
}

/* ========== LANGUAGE SWITCH ========== */
/* Estilos adicionales para el toggle (ya incluidos arriba, se mantienen) */
.lang-option {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--text-muted);
    transition: color var(--transition-smooth);
}

.lang-option.active-lang {
    color: var(--text-main);
}

.toggle-slider {
    width: 40px;
    height: 20px;
    background-color: #333;
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.2s;
}

.toggle-knob {
    width: 16px;
    height: 16px;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.2s ease;
}

.toggle-slider[data-lang="en"] .toggle-knob {
    transform: translateX(20px);
}

@media (max-width: 768px) {
    .lang-switch {
        margin-right: 10px;
        gap: 5px;
    }
    .toggle-slider {
        width: 36px;
        height: 18px;
    }
    .toggle-knob {
        width: 14px;
        height: 14px;
    }
}