/* ========================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
   ======================================== */
:root {
    --color-bg-primary: #0f2027;
    --color-bg-secondary: #203a43;
    --color-bg-tertiary: #2c5364;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-accent: #00ffff;
    --color-accent-secondary: #ff00ff;
    --color-card-bg: rgba(30, 30, 47, 0.7);
    --color-border: rgba(255, 255, 255, 0.1);
    --font-primary: 'Fira Code', monospace;
    --transition-speed: 0.3s;
    --border-radius: 12px;
    --spacing-unit: 1rem;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 255, 255, 0.3);
}

/* ========================================
   RESET Y ESTILOS BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: radial-gradient(circle at top left, var(--color-bg-primary), var(--color-bg-secondary), var(--color-bg-tertiary));
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Canvas de partículas */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.4;
}

/* ========================================
   CONTENEDOR PRINCIPAL
   ======================================== */
.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

/* ========================================
   UTILIDADES
   ======================================== */
.hidden {
    display: none !important;
}

/* Efecto Glassmorphism */
.glass-card {
    background: var(--color-card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-speed) ease;
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: rgba(0, 255, 255, 0.3);
}

/* ========================================
   NAVEGACIÓN SUPERIOR
   ======================================== */
.top-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(2rem, 10vw, 16rem);
    background: rgba(30, 30, 30, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-unit);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: transform var(--transition-speed) ease;
}

.top-nav.hidden {
    transform: translateY(-100%);
}

.top-nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.top-nav ul li a {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.5rem 1.2rem;
    border-radius: 8px;
    transition: all var(--transition-speed) ease;
    position: relative;
}

.top-nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: all var(--transition-speed) ease;
    transform: translateX(-50%);
}

.top-nav ul li a:hover::after,
.top-nav ul li a.active::after {
    width: 80%;
}

.top-nav ul li a.active {
    background: rgba(37, 37, 38, 0.8);
    color: var(--color-accent);
    box-shadow: inset 0 0 10px rgba(0, 255, 255, 0.3);
}

.top-nav ul li a:hover {
    background: rgba(37, 37, 38, 0.6);
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* ========================================
   NAVEGACIÓN LATERAL
   ======================================== */
.side-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    z-index: 1001;
    border-right: 1px solid var(--color-border);
}

.side-nav.visible {
    transform: translateX(0);
}

.side-nav::-webkit-scrollbar {
    width: 6px;
}

.side-nav::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.side-nav::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 3px;
}

.btn-close {
    align-self: flex-end;
    background: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-speed) ease;
    font-weight: bold;
}

.btn-close:hover {
    background: var(--color-accent);
    color: #000;
    transform: rotate(90deg);
}

.side-section {
    background: rgba(37, 37, 38, 0.8);
    border-radius: 10px;
    padding: 1.2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.side-section h3 {
    font-size: 1rem;
    color: var(--color-accent);
    margin-bottom: 0.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 0.5rem;
    font-weight: 600;
}

.side-section ul {
    list-style: none;
}

.side-section ul li {
    margin-bottom: 0.6rem;
}

.side-section ul li a {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all var(--transition-speed) ease;
    display: inline-block;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
}

.side-section ul li a:hover,
.side-section ul li a.active {
    color: var(--color-accent);
    background: rgba(0, 255, 255, 0.1);
    transform: translateX(5px);
}

/* ========================================
   BOTONES DE IDIOMA
   ======================================== */
.language-switcher {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
}

.btn-lang {
    background: rgba(37, 37, 38, 0.8);
    color: var(--color-text-primary);
    border: 1px solid var(--color-accent);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-speed) ease;
    font-family: var(--font-primary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-lang:hover {
    background: rgba(0, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.3);
}

.btn-lang.active {
    background: var(--color-accent);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.lang-icon {
    font-size: 1.1rem;
}

/* ========================================
   CONTENIDO PRINCIPAL
   ======================================== */
.content {
    flex: 1;
    padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 3vw, 2rem);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.content section {
    margin-bottom: clamp(3rem, 8vw, 6rem);
}

/* ========================================
   SECCIÓN HELLO
   ======================================== */
#hello {
    text-align: center;
    padding: clamp(2rem, 8vw, 5rem) 0;
}

#hello h1 {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: 1rem;
    font-weight: 700;
}

.highlight {
    background: linear-gradient(45deg, var(--color-accent), var(--color-accent-secondary));
    background-size: 200% 200%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

#dynamic-text {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    color: var(--color-accent);
    min-height: 2em;
    margin-bottom: 2rem;
    font-weight: 500;
}

.info {
    background: var(--color-card-bg);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-size: clamp(0.85rem, 2vw, 1rem);
    text-align: left;
    max-width: 700px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    overflow-x: auto;
    line-height: 1.8;
}

/* ========================================
   SECCIÓN ABOUT ME
   ======================================== */
.about-me {
    padding: 2rem 0;
}

.about-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.personal-info,
.skills {
    padding: 2rem;
}

.personal-info h2,
.skills h2 {
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.personal-info pre {
    font-family: var(--font-primary);
    font-size: clamp(0.8rem, 2vw, 0.95rem);
    line-height: 1.8;
    color: var(--color-text-secondary);
    overflow-x: auto;
    white-space: pre-wrap;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-category h3 {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--color-text-primary);
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.skill-category ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.6rem;
}

.skill-category ul li a {
    color: var(--color-accent);
    text-decoration: none;
    font-size: clamp(0.9rem, 2vw, 1rem);
    transition: all var(--transition-speed) ease;
    display: block;
    padding: 0.5rem;
    border-radius: 6px;
}

.skill-category ul li a:hover {
    background: rgba(0, 255, 255, 0.1);
    transform: translateX(5px);
}

/* ========================================
   SECCIÓN PROYECTOS
   ======================================== */
.projects {
    padding: 2rem 0;
}

.projects h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--color-text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    background: rgba(37, 37, 38, 0.8);
    color: var(--color-text-primary);
    border: 1px solid var(--color-accent);
    border-radius: 8px;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    transition: all var(--transition-speed) ease;
}

.filter-btn:hover {
    background: rgba(0, 255, 255, 0.2);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--color-accent);
    color: #000;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.project-item {
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.project-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.project-item:hover::before {
    left: 100%;
}

.project-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(0, 255, 255, 0.5));
}

.project-item h3 {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    font-weight: 600;
}

/* Proyecto Extra */
.extra-project {
    margin-top: 3rem;
}

.extra-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.extra-img {
    width: 100%;
    max-width: 600px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    margin: 0 auto;
}

.extra-info h3 {
    font-size: clamp(1.3rem, 3vw, 2rem);
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.extra-info p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.extra-info code {
    background: rgba(0, 255, 255, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    color: var(--color-accent);
    font-size: 0.9em;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
    color: #000;
    padding: 0.8rem 1.8rem;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--font-primary);
    transition: all var(--transition-speed) ease;
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.3);
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 255, 255, 0.5);
}

/* ========================================
   SECCIÓN TIMELINE
   ======================================== */
.timeline {
    padding: 2rem 0;
}

.timeline h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--color-text-primary);
    margin-bottom: 3rem;
    text-align: center;
}

.timeline-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-accent);
}

.timeline-item {
    padding: 1.5rem 1.5rem 1.5rem 3.5rem;
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: -2.3rem;
    top: 1.8rem;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.7);
    z-index: 1;
}

.timeline-item h3 {
    color: var(--color-accent);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.timeline-item p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   ANIMACIONES
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   BARRA DE PROGRESO
   ======================================== */
#progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 9999;
}

#progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--color-accent);
}

/* ========================================
   NOTIFICACIONES (TOAST)
   ======================================== */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    background: var(--color-card-bg);
    backdrop-filter: blur(10px);
    color: var(--color-text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.4s ease, slideOutRight 0.4s ease 2.6s;
    min-width: 250px;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* ========================================
   FOOTER
   ======================================== */
footer {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(15, 32, 39, 0.9);
    backdrop-filter: blur(10px);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    border-top: 1px solid var(--color-border);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .top-nav {
        gap: 2rem;
    }
    
    .about-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .top-nav {
        position: fixed;
        bottom: 0;
        top: auto;
        width: 100%;
        padding: 0.8rem;
        flex-direction: row;
        justify-content: space-between;
        gap: 0.5rem;
    }
    
    .top-nav ul {
        gap: 0.5rem;
        flex: 1;
        justify-content: space-around;
    }
    
    .top-nav ul li a {
        padding: 0.6rem;
        font-size: 0.85rem;
    }
    
    .language-switcher {
        gap: 0.5rem;
    }
    
    .btn-lang {
        padding: 0.6rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .side-nav {
        width: 100%;
        max-width: 320px;
    }
    
    .content {
        padding-bottom: 6rem;
    }
    
    .projects-container {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .timeline-container::before {
        left: 10px;
    }
    
    .timeline-dot {
        left: -1.8rem;
    }
    
    .timeline-item {
        padding-left: 2.5rem;
    }
    
    #toast-container {
        right: 1rem;
        bottom: 6rem;
        left: 1rem;
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .top-nav ul li a {
        padding: 0.5rem 0.3rem;
        font-size: 0.75rem;
    }
    
    .projects-container {
        grid-template-columns: 1fr;
    }
    
    .filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

/* ========================================
   ACCESIBILIDAD
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ========================================
   SCROLLBAR PERSONALIZADO
   ======================================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 32, 39, 0.5);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-secondary);
}