/* ========================================
   RICARDO GONZÁLEZ - PORTFOLIO CSS
   ======================================== */

/* Variables CSS - Light Mode */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #0ea5e9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #64748b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.95);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
    --gradient-secondary: linear-gradient(135deg, #64748b 0%, #475569 100%);
    --hero-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

/* Variables CSS - Dark Mode */
[data-theme="dark"] {
    --primary-color: #60a5fa;
    --primary-dark: #3b82f6;
    --secondary-color: #94a3b8;
    --accent-color: #38bdf8;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-light: #64748b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-dark: #020617;
    --border-color: #334155;
    --card-bg: #1e293b;
    --header-bg: rgba(15, 23, 42, 0.98);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6);
    --gradient-primary: linear-gradient(135deg, #60a5fa 0%, #38bdf8 100%);
    --gradient-secondary: linear-gradient(135deg, #64748b 0%, #475569 100%);
    --hero-gradient: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav-logo span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* Theme Toggle Button */
.theme-toggle {
    position: relative;
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin-left: var(--spacing-md);
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    transform: rotate(360deg);
}

.theme-toggle i {
    position: absolute;
    font-size: 1.2rem;
    color: var(--text-primary);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(180deg);
}

.theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
    color: #fbbf24;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(-180deg);
}

/* Dark mode navbar improvements */
[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.98);
    border-bottom-color: rgba(51, 65, 85, 0.5);
}

[data-theme="dark"] .nav-menu a {
    color: #94a3b8;
}

[data-theme="dark"] .nav-menu a:hover {
    color: #60a5fa;
}

[data-theme="dark"] .theme-toggle {
    border-color: rgba(148, 163, 184, 0.3);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(30, 41, 59, 0.5);
    border-color: #60a5fa;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hero-gradient);
    position: relative;
    padding: var(--spacing-2xl) var(--spacing-md);
    margin-top: 70px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-2xl);
    align-items: center;
    max-width: var(--max-width);
    width: 100%;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: var(--primary-color);
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -5px;
    width: 12px;
    height: 12px;
    border-right: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Sections */
.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Projects Section */
.projects {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.project-card.featured {
    transform: scale(1.02);
    border-color: var(--primary-color);
}

.project-card.featured:hover {
    transform: scale(1.02) translateY(-5px);
}

.project-image {
    position: relative;
    height: 250px;
    background: var(--bg-secondary);
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

/* Iframe Live Preview */
.project-image iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    transform: scale(0.5);
    transform-origin: 0 0;
    border: none;
    pointer-events: none; /* Evita interacción directa */
    background: var(--bg-secondary);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-image:hover .project-overlay {
    opacity: 1;
}

.project-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid white;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.project-link:hover {
    background: white;
    color: var(--primary-color);
}

.project-content {
    padding: var(--spacing-lg);
}

.project-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-description {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* Skills Section */
.skills {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.skill-category {
    background: var(--card-bg);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.skill-category:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.skill-category h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.skill-item:hover {
    background: var(--bg-secondary);
    transform: scale(1.05);
}

.skill-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.skill-item span {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-item p {
    color: var(--text-light);
}

.contact-cta {
    text-align: center;
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
}

.contact-cta h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.contact-cta p {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-right i {
    color: #ef4444;
    margin: 0 0.25rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .theme-toggle {
        order: -1;
        margin-left: auto;
        margin-right: var(--spacing-sm);
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--header-bg);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .skill-items {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .avatar {
        width: 150px;
        height: 150px;
        font-size: 3rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .skill-category {
        padding: var(--spacing-lg);
    }
}