:root {
    --bs-body-font-family: 'Inter', sans-serif;
    --dm-black: #000000;
    --dm-white: #ffffff;
    --dm-gray: #666666;
    --dm-gray-light: rgba(255, 255, 255, 0.3);
    --transition-premium: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* BLOQUEO DE SCROLL HORIZONTAL */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
    scroll-snap-type: y mandatory;
}

#inicio,
#estudio,
#proyectos,
#contacto {
    scroll-snap-align: start;
}

html,
body {
    max-width: 100%;
    overflow-x: hidden;
    position: relative;
}

body {
    letter-spacing: -0.02em;
    cursor: none;
    /* Ocultar cursor nativo por defecto */
    background-color: #fff;
    color: var(--dm-black);
}

/* --- SISTEMA DE PRELOADER --- */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--dm-white);
    z-index: 20000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.5s;
}

html.dm-loader-skip #preloader {
    display: none !important;
}

#page-transition {
    position: fixed;
    inset: 0;
    z-index: 19000;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    background: rgba(255, 255, 255, 0.96);
    transition: opacity 0.34s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.34s cubic-bezier(0.16, 1, 0.3, 1);
}

#page-transition::before {
    content: "";
    width: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.48);
    transition: width 0.48s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.48s cubic-bezier(0.16, 1, 0.3, 1);
}

#page-transition.is-active {
    opacity: 1;
    visibility: visible;
}

#page-transition.is-active::before {
    width: 136px;
}

::selection {
    color: var(--dm-white);
    background-color: var(--dm-black);
}

::-moz-selection {
    color: var(--dm-white);
    background-color: var(--dm-black);
}

.loader-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 300px;
    height: 100px;
}

#loader-symbol {
    height: 40px;
    position: absolute;
    transition: opacity 0.4s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0;
    transform: scale(0.9);
}

#loader-logo {
    height: 60px;
    position: absolute;
    transition: opacity 0.4s ease, transform 0.6s ease;
    opacity: 0;
}

#loader-welcome {
    transition: opacity 0.5s ease;
    opacity: 0;
}

/* Estado inicial del contenido del sitio */
#main-site-content {
    opacity: 1;
    /* Eliminado el retraso visual inicial para evitar pantalla en blanco */
    transform: translateY(0);
    transition: opacity 0.52s cubic-bezier(0.16, 1, 0.3, 1), transform 0.52s cubic-bezier(0.16, 1, 0.3, 1);
}

html.dm-js #main-site-content {
    opacity: 0;
    transform: translateY(8px);
}

html.dm-js.dm-page-ready #main-site-content,
html.dm-js.dm-loader-skip.dm-page-ready #main-site-content {
    opacity: 1;
    transform: translateY(0);
}

body.dm-page-is-leaving #main-site-content {
    opacity: 0;
    transform: translateY(-6px);
}

/* --- SISTEMA DE NAVEGACIÓN Y DISEÑO --- */
.link-premium {
    text-decoration: none !important;
    position: relative;
    display: inline-block;
    color: var(--dm-black) !important;
    transition: var(--transition-premium);
}

.menu-primary-link {
    font-size: 1.3rem;
}

.link-premium::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -4px;
    left: 0;
    background-color: var(--dm-black);
    transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.4s ease;
}

.link-premium:hover {
    color: var(--dm-gray) !important;
}

.link-premium:hover::after,
.link-premium.active::after {
    width: 100%;
    background-color: var(--dm-gray);
}

.filter-btn {
    background: none;
    border: none;
    padding: 0;
    color: var(--dm-gray) !important;
}

.filter-btn.active {
    color: var(--dm-black) !important;
}

/* Cursor Personalizado */
#custom-cursor {
    width: 30px;
    height: 30px;
    border: 1px solid var(--dm-black);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease-out, background-color 0.3s ease, border-color 0.3s ease;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
}

#custom-cursor.active {
    background-color: var(--dm-black);
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.3);
}

#custom-cursor.clicked {
    transform: translate(-50%, -50%) scale(0.65) !important;
    background-color: var(--dm-black);
    opacity: 0.5;
}

#custom-cursor.on-dark {
    border-color: var(--dm-white);
}

#custom-cursor.on-dark.active {
    background-color: var(--dm-white);
}

#custom-cursor.on-dark.clicked {
    background-color: var(--dm-white);
}

/* Ocultar puntero nativo en escritorio */
a,
button,
.project-card,
.filter-btn,
.carousel-indicators button,
.navbar-toggler,
.link-premium,
.clickable,
.social-icon {
    cursor: none !important;
}

/* OPTIMIZACIÓN RESPONSIVA OFFSET Y CURSOR */
.offcanvas-end {
    width: 100% !important;
    /* Full screen por defecto en móvil/tablet */
    border-left: none !important;
}

@media (min-width: 992px) {
    .offcanvas-end {
        width: 50% !important;
        /* Mitad de pantalla en escritorio */
        border-left: 1px solid #eee !important;
    }
}

@media (max-width: 992px),
(pointer: coarse) {
    #custom-cursor {
        display: none !important;
    }

    body {
        cursor: auto !important;
    }

    a,
    button,
    .project-card,
    .filter-btn,
    .carousel-indicators button,
    .navbar-toggler,
    .link-premium,
    .clickable,
    .social-icon,
    .lightbox-trigger {
        cursor: pointer !important;
    }
}

.ls-wide {
    letter-spacing: 0.2em;
}

.ls-ultra {
    letter-spacing: 0.5em;
    text-transform: uppercase;
    font-size: 0.65rem;
}

#heroCarousel .carousel-item {
    height: 100vh;
    background-color: var(--dm-black);
}

#heroCarousel .carousel-item img {
    width: 100%;
    height: 100vh;
    object-fit: cover;
    opacity: 0.8;
}

#heroCarousel .carousel-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.0) 20%, rgba(0, 0, 0, 0.3) 100%);
    pointer-events: none;
    z-index: 1;
}

#heroCarousel .carousel-caption {
    z-index: 2;
}

/* Ajuste de proporciones para los textos del banner principal */
#heroCarousel .carousel-caption h1 {
    /* 80% del display-5 original aproximadamente */
    font-size: clamp(1.8rem, 3vw, 2.4rem) !important; 
}

#heroCarousel .carousel-caption p {
    /* 200% más grande que el 0.65rem de .ls-ultra */
    font-size: 1.5rem !important;
}

.carousel-indicators-vertical {
    bottom: auto !important;
    top: 50% !important;
    right: 30px !important;
    left: auto !important;
    margin: 0 !important;
    flex-direction: column;
    gap: 0;
    transform: translateY(-50%);
    z-index: 10;
}

.carousel-indicators-vertical [data-bs-target] {
    width: 40px !important;
    height: 40px !important;
    border: none !important;
    background-color: transparent !important;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    margin: 0 !important;
    padding: 0 !important;
    opacity: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.carousel-indicators-vertical [data-bs-target]::after {
    content: '';
    width: 2px;
    height: 100%;
    background-color: var(--dm-gray-light);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0.5;
}

.carousel-indicators-vertical .active::after {
    background-color: var(--dm-white) !important;
    height: 80px !important;
    opacity: 1;
}

.filter-white {
    filter: brightness(0) invert(1);
}

.img-grayscale {
    filter: grayscale(100%);
    transition: filter 0.8s ease, transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    object-fit: cover;
}

.project-card:hover .img-grayscale {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.transition-soft {
    transition: all 0.4s ease;
}

.project-item {
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.project-item.filtering {
    opacity: 0 !important;
    transform: scale(0.95) !important;
    pointer-events: none;
}

.project-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    pointer-events: none;
    z-index: 10;
}

.nav-icon-svg rect {
    transition: fill 0.4s ease;
}

.social-icon {
    font-size: 1.2rem;
    color: var(--dm-black);
    transition: var(--transition-premium);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid transparent;
    border-radius: 50%;
}

.social-icon:hover {
    color: var(--dm-gray);
    border-color: #eee;
}

.social-icon svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.social-icon-mark {
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1;
}

/* --- ESTILOS VISTA DE PROYECTO --- */
/* Ajustes específicos para Lightbox y Hover de Proyectos */
.hover-bg-dark:hover {
    background-color: #121212 !important;
    color: #ffffff !important;
}

.hover-bg-dark:hover * {
    color: #ffffff !important;
}

.hover-bg-dark:hover .text-secondary {
    color: rgba(255, 255, 255, 0.5) !important;
}

.lightbox-trigger {
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1), filter 0.6s ease;
}

.lightbox-trigger:hover {
    transform: scale(1.02);
    filter: grayscale(0) !important;
}

#lightboxImage {
    max-height: 100%;
    /* Permite ver la foto sin desbordes raros */
}

.lightbox-thumb {
    height: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    cursor: pointer;
    opacity: 0.4;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.lightbox-thumb.active {
    opacity: 1;
    border-color: black;
    transform: scale(1.05);
    /* Ligeramente más grande para destacarla */
}

.lightbox-thumb:hover {
    opacity: 0.8;
}

.hero-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0) 50%);
    z-index: 1;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: black;
    font-size: 2rem;
    opacity: 0.5;
    transition: opacity 0.3s;
    z-index: 10;
}

.lightbox-nav:hover {
    opacity: 1;
    color: black;
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.project-menu a {
    position: relative;
}

.project-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: currentColor;
    transition: width 0.3s;
}

.project-menu a:hover::after {
    width: 100%;
}

/* Subtle prev/next hover */
.hover-opacity {
    transition: opacity 0.3s;
}

.hover-opacity:hover {
    opacity: 0.6;
}
/* --- UTILITIES --- */
.writing-vertical {
    writing-mode: vertical-rl;
}