:root {
    --color-fondo-principal: #0a0a0a;
    --color-texto-principal: #ffffff;
    --color-acento-primario: #00f0ff;
    --color-acento-secundario: #0088ff;
    --color-fondo-tarjeta: #121212;
    --color-borde-tarjeta: #1e1e1e;
    --color-texto-secundario: #cfcfcf;
    --color-texto-terciario: #888888;
    --color-boton-primario: #00d1ff;
    --color-boton-hover: #00e8ff;
    --color-success: #00ffb3;
    --color-error: #ff4f4f;

    /* Variables responsivas */
    --header-height: 80px;
    --logo-size: 50px;
    --logo-font-size: 1.5rem;
    --logo-subtitle-size: 0.7rem;
    --nav-gap: 1.5rem;
    --nav-padding: 0.5rem 1rem;
    --button-padding: 0.4rem 1.2rem;
    --button-font-size: 0.9rem;
    --mobile-menu-font-size: 1.2rem;
    --hamburger-size: 25px;
    --hamburger-thickness: 3px;
    --hamburger-gap: 3px;
}

* {
    box-sizing: border-box;
}

body {
    padding: 0;
    margin: 0;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-fondo-principal);
    color: var(--color-texto-principal);
    padding-top: var(--header-height);
    line-height: 1.6;
}

body,
html {
    scrollbar-width: thin;
    scrollbar-color: var(--color-texto-principal) transparent;
}

/* WebKit: Chrome, Edge, Safari */
body::-webkit-scrollbar,
html::-webkit-scrollbar {
    width: 8px;
}

body::-webkit-scrollbar-thumb,
html::-webkit-scrollbar-thumb {
    background-color: var(--color-texto-principal);
    border-radius: 10px;
}

body::-webkit-scrollbar-track,
html::-webkit-scrollbar-track {
    background: transparent;
}

/* Header */
header {
    color: var(--color-texto-principal);
    background: rgba(10, 10, 10, 0.95);
    padding: 1rem;
    border-bottom: 1px solid var(--color-acento-primario);
    box-shadow: 0 0 15px var(--color-acento-primario);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    backdrop-filter: blur(8px);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    z-index: 1000;
    flex-shrink: 0;
}

.logo img {
    height: var(--logo-size);
    width: var(--logo-size);
    border-radius: 50%;
    margin-right: 10px;
    object-fit: cover;
}

.logo-texto h1 {
    margin: 0;
    font-size: var(--logo-font-size);
    font-weight: 700;
    color: var(--color-acento-primario);
    line-height: 1;
}

.logo-texto span {
    font-size: var(--logo-subtitle-size);
    color: var(--color-texto-secundario);
    display: block;
    margin-top: 2px;
}

/* Navegación */
.nav-pages {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-pages ul {
    display: flex;
    list-style: none;
    gap: var(--nav-gap);
    margin: 0;
    padding: 0;
}

.nav-pages a {
    color: var(--color-texto-principal);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: var(--nav-padding);
    border-radius: 12px;
    white-space: nowrap;
    display: block;
}

.nav-pages a:hover {
    background-color: var(--color-acento-primario);
    color: #000;
    transform: translateY(-1px);
}

/* Estilo general para enlaces tipo botón */
.buttom,
.buttom-secundary {
    display: inline-block;
    padding: var(--button-padding);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    font-size: var(--button-font-size);
    text-decoration: none;
    text-align: center;
    min-width: fit-content;
    transition: all 0.3s ease;
    color: #000;
}

/* Botón primario */
.buttom {
    background: var(--color-boton-primario);
}

.buttom:hover {
    background: var(--color-boton-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 240, 255, 0.3);
}

/* Botón secundario */
.buttom-secundary {
    background: var(--color-texto-principal);
}

.buttom-secundary:hover {
    background: var(--color-boton-primario);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 240, 255, 0.3);
}

/* Menú Hamburguesa */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
    transition: all 0.3s ease;
}

.hamburger span {
    width: var(--hamburger-size);
    height: var(--hamburger-thickness);
    background-color: var(--color-texto-principal);
    margin: var(--hamburger-gap) 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background-color: var(--color-acento-primario);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background-color: var(--color-acento-primario);
}

/* Menú móvil */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(10px);
    z-index: 998;
    padding-top: var(--header-height);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    overflow-y: auto;
}

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

.mobile-menu ul {
    list-style: none;
    padding: 2rem 0;
    margin: 0;
    text-align: center;
}

.mobile-menu li {
    margin: 1.5rem 0;
}

.mobile-menu a {
    color: var(--color-texto-principal);
    text-decoration: none;
    font-size: var(--mobile-menu-font-size);
    font-weight: 500;
    padding: 1rem 2rem;
    display: inline-block;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.mobile-menu a:hover {
    background-color: var(--color-acento-primario);
    color: #000;
    border-color: var(--color-acento-primario);
    transform: scale(1.05);
}

.mobile-menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    margin-top: 2rem;
    padding: 0 2rem;
}

.mobile-menu-buttons .buttom,
.mobile-menu-buttons .buttom-secundary {
    width: 100%;
    max-width: 250px;
    padding: 1rem;
    font-size: 1rem;
}

/* Contenido de demo */
.demo-content {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-content h2 {
    color: var(--color-acento-primario);
    margin-bottom: 1rem;
}

.demo-content p {
    margin-bottom: 1rem;
    color: var(--color-texto-secundario);
}

/* Media Queries Optimizadas */

/* Tablets grandes y laptops pequeñas - MEJORADO */
@media (max-width: 1024px) {
    :root {
        --header-height: 75px;
        --logo-size: 45px;
        --logo-font-size: 1.4rem;
        --logo-subtitle-size: 0.65rem;
        --nav-gap: 1rem;
        --nav-padding: 0.4rem 0.8rem;
        --button-padding: 0.5rem 1rem;
        --button-font-size: 0.85rem;
    }

    .header-container {
        padding: 0 1.5rem;
        max-width: 95%;
    }

    .nav-pages ul {
        gap: 0.8rem;
    }

    .nav-pages a {
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
    }

    .buttom a,
    .buttom-secundary a {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* Ajustar el logo en tablets */
    .logo img {
        margin-right: 8px;
    }

    .logo-texto h1 {
        font-size: 1.4rem;
    }

    .logo-texto span {
        font-size: 0.65rem;
    }
}

/* Tablets medianas - NUEVO BREAKPOINT */
@media (max-width: 900px) {
    :root {
        --header-height: 70px;
        --logo-size: 42px;
        --logo-font-size: 1.3rem;
        --logo-subtitle-size: 0.6rem;
        --nav-gap: 0.8rem;
        --nav-padding: 0.3rem 0.6rem;
        --button-padding: 0.4rem 0.8rem;
        --button-font-size: 0.8rem;
    }

    .header-container {
        padding: 0 1rem;
    }

    .nav-pages a {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }

    /* Reducir espacios en navegación */
    .nav-pages {
        gap: 0.5rem;
    }
}

/* Tablets pequeñas - TRANSICIÓN A MÓVIL */
@media (max-width: 768px) {
    :root {
        --header-height: 65px;
        --logo-size: 38px;
        --logo-font-size: 1.2rem;
        --logo-subtitle-size: 0.55rem;
        --hamburger-size: 22px;
        --hamburger-thickness: 2.5px;
        --hamburger-gap: 2.5px;
        --mobile-menu-font-size: 1.1rem;
    }

    header {
        padding: 0.6rem 1rem;
    }

    .nav-pages {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .logo img {
        margin-right: 7px;
    }

    .header-container {
        padding: 0 0.8rem;
    }
}

/* Móviles grandes */
@media (max-width: 480px) {
    :root {
        --header-height: 60px;
        --logo-size: 34px;
        --logo-font-size: 1.1rem;
        --logo-subtitle-size: 0.5rem;
        --hamburger-size: 20px;
        --hamburger-thickness: 2px;
        --hamburger-gap: 2px;
        --mobile-menu-font-size: 1rem;
    }

    header {
        padding: 0.5rem 0.8rem;
    }

    .logo img {
        margin-right: 6px;
    }

    .mobile-menu {
        padding-top: calc(var(--header-height) + 15px);
    }

    .mobile-menu a {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .mobile-menu-buttons {
        padding: 0 1.5rem;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 4px);
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -4px);
    }
}

/* Móviles pequeños */
@media (max-width: 360px) {
    :root {
        --header-height: 55px;
        --logo-size: 30px;
        --logo-font-size: 1rem;
        --logo-subtitle-size: 0.45rem;
        --hamburger-size: 18px;
        --hamburger-thickness: 1.5px;
        --mobile-menu-font-size: 0.95rem;
    }

    header {
        padding: 0.4rem 0.6rem;
    }

    .logo img {
        margin-right: 5px;
    }

    .mobile-menu a {
        font-size: 0.95rem;
        padding: 0.7rem 1rem;
    }

    .mobile-menu-buttons {
        padding: 0 1rem;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(3px, 3px);
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(3px, -3px);
    }
}

/* Pantallas grandes (desktop) */
@media (min-width: 1200px) {
    :root {
        --header-height: 90px;
        --logo-size: 60px;
        --logo-font-size: 1.8rem;
        --logo-subtitle-size: 0.8rem;
        --nav-gap: 2rem;
        --nav-padding: 0.6rem 1.2rem;
        --button-padding: 0.7rem 1.4rem;
        --button-font-size: 1rem;
    }
}

/* Mejoras adicionales para accesibilidad */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Orientación landscape en tablets */
@media (max-width: 1024px) and (orientation: landscape) {
    :root {
        --header-height: 60px;
        --logo-size: 35px;
        --logo-font-size: 1.1rem;
        --logo-subtitle-size: 0.5rem;
    }

    .nav-pages a {
        padding: 0.3rem 0.6rem;
        font-size: 0.8rem;
    }

    .buttom a,
    .buttom-secundary a {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}

/* Orientación landscape en móviles */
@media (max-width: 768px) and (orientation: landscape) {
    :root {
        --header-height: 55px;
        --logo-size: 30px;
        --logo-font-size: 1rem;
        --logo-subtitle-size: 0.45rem;
    }

    .mobile-menu {
        padding-top: calc(var(--header-height) + 10px);
    }

    .mobile-menu ul {
        padding: 1rem 0;
    }

    .mobile-menu li {
        margin: 0.8rem 0;
    }
}

/* Estados de focus para accesibilidad */
.nav-pages a:focus,
.buttom a:focus,
.buttom-secundary a:focus,
.hamburger:focus {
    outline: 2px solid var(--color-acento-primario);
    outline-offset: 2px;
}