/* ===================================
   CE3AA LABS V2 - FOLDER DESIGN
   Dark theme with folder-style cards
   =================================== */

/* === CSS VARIABLES === */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #151515;
    --color-surface: #e8e5dc;
    --color-surface-dark: #d4d1c8;

    --color-text-dark: #0a0a0a;
    --color-text-light: #ffffff;
    --color-text-muted: #999999;

    --color-accent: #ffaa00;
    --color-accent-hover: #ffbb33;

    --color-status-live: #00ff88;
    --color-status-dev: #ffaa00;
    --color-status-upcoming: #666666;

    /* Typography */
    --font-main: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Layout */
    --container-max: 1400px;

    /* Transitions */
    --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-main);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-light);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

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

/* === HEADER === */
.header {
    background: var(--color-bg-primary);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid #333;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(10, 10, 10, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-img {
    height: 45px;
    width: 45px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-text-light);
    line-height: 1;
}

.logo-text p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition);
}

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

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

/* === HERO === */
.hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: linear-gradient(180deg, rgba(10, 10, 10, 0.4) 0%, rgba(21, 21, 21, 0.5) 100%),
        url('hero-bg.png') center/cover no-repeat;
    position: relative;
}

.hero-content {
    max-width: 800px;
}

.hero .container {
    position: relative;
}

.hero-label {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-text-dark);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 0.95;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    max-width: 650px;
}

/* Logo grande decorativo en hero */
.hero-logo-large {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    width: 350px;
    height: 350px;
    opacity: 1;
    pointer-events: none;
    z-index: 1;
    object-fit: contain;
    will-change: transform;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* === SECTION TITLES === */
.section-title-wrapper {
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-lg);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-text-light);
    text-align: center;
}

/* === PROJECTS / FOLDERS === */
.projects {
    padding: var(--spacing-lg) 0;
}

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

/* === FOLDER CARD === */
.folder {
    position: relative;
    transition: transform var(--transition);
    overflow: visible;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.folder:hover {
    transform: translateY(-8px);
    z-index: 10;
}

.folder-tab {
    background: var(--color-surface);
    padding: 0.75rem 1.5rem;
    border-radius: 12px 12px 0 0;
    display: inline-block;
    position: relative;
    left: 20px;
    align-self: flex-start;
}

.folder-letter {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text-dark);
}

.folder-content {
    background: var(--color-surface);
    padding: 1.5rem;
    border-radius: 0 12px 12px 12px;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    flex: 1;
}

.folder-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.folder-header h4 {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-text-dark);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.folder-badge {
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
}

.folder-badge.live {
    background: var(--color-status-live);
    color: var(--color-text-dark);
}

.folder-badge.dev {
    background: var(--color-status-dev);
    color: var(--color-text-dark);
}

.folder-badge.upcoming {
    background: var(--color-status-upcoming);
    color: var(--color-text-light);
}

.folder-badge.edu {
    background: #4cc9f0;
    color: var(--color-text-dark);
}

.folder-description {
    font-size: 0.9rem;
    line-height: 1.5;
    color: #333;
    margin-bottom: var(--spacing-sm);
}

.folder-features {
    list-style: none;
    margin: var(--spacing-sm) 0;
    flex-grow: 1;
}

.folder-features li {
    font-size: 0.825rem;
    color: #555;
    padding: 0.4rem 0;
    border-bottom: 1px solid #d0d0d0;
    position: relative;
    padding-left: 1.5rem;
}

.folder-features li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: 0.625rem;
    top: 0.7rem;
}

.folder-features li:last-child {
    border-bottom: none;
}

.folder-btn {
    display: inline-block;
    background: var(--color-text-dark);
    color: var(--color-text-light);
    padding: 0.75rem 1.25rem;
    font-size: 0.825rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--transition);
    text-align: center;
    letter-spacing: 0.05em;
    margin-top: auto;
}

.folder-btn:hover {
    background: var(--color-accent);
    transform: translateX(4px);
}

/* === FEATURED FOLDER === */
.folder-featured {
    grid-column: span 1;
}

.folder-featured .folder-tab {
    background: linear-gradient(135deg, var(--color-accent) 0%, #ffcc44 100%);
    box-shadow: 0 -4px 20px rgba(255, 170, 0, 0.4);
}

.folder-featured .folder-content {
    background: linear-gradient(145deg, var(--color-accent) 0%, #dd9500 100%);
    border: 3px solid var(--color-accent-hover);
    box-shadow:
        0 10px 40px rgba(255, 170, 0, 0.4),
        0 0 60px rgba(255, 170, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.folder-featured .folder-header h4 {
    color: var(--color-text-light);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.folder-featured .folder-description {
    color: rgba(255, 255, 255, 0.95);
}

.folder-featured .folder-features li {
    color: rgba(255, 255, 255, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.25);
}

.folder-featured .folder-features li::before {
    color: var(--color-text-light);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.folder-featured .folder-letter {
    color: var(--color-text-dark);
    font-size: 1rem;
}

.featured-label {
    display: inline-block;
    background: rgba(255, 255, 255, 0.25);
    color: var(--color-text-light);
    padding: 0.4rem 0.9rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    border-radius: 20px;
    margin-bottom: var(--spacing-sm);
    animation: labelGlow 2s ease-in-out infinite;
    backdrop-filter: blur(4px);
}

.featured-btn {
    background: var(--color-text-light);
    color: var(--color-accent);
    font-size: 0.9rem;
    padding: 0.9rem 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.featured-btn:hover {
    background: var(--color-text-dark);
    color: var(--color-text-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

@keyframes featuredPulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 170, 0, 0);
    }

    50% {
        box-shadow: 0 0 0 8px rgba(255, 170, 0, 0.15);
    }
}

@keyframes labelGlow {

    0%,
    100% {
        background: rgba(255, 255, 255, 0.25);
    }

    50% {
        background: rgba(255, 255, 255, 0.35);
    }
}

/* === PLACEHOLDER FOLDER === */
.folder-placeholder .folder-content {
    background: var(--color-bg-secondary);
    border: 2px dashed #333;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.folder-placeholder .folder-header h4 {
    color: var(--color-text-muted);
}

.folder-placeholder .folder-description {
    color: var(--color-text-muted);
}

.coming-soon-icon {
    font-size: 4rem;
    color: #333;
    font-weight: 300;
    margin-top: var(--spacing-md);
}

/* === ABOUT SECTION === */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-secondary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-card {
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    border: 1px solid #333;
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-sm);
}

/* === FOOTER === */
.footer {
    background: var(--color-bg-primary);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid #333;
}

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

.footer-main {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.footer-logo {
    height: 60px;
    width: 60px;
    object-fit: contain;
    flex-shrink: 0;
}

.footer-info h4 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-text-light);
    margin-bottom: 0.25rem;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    max-width: 400px;
}

.footer-description strong {
    color: var(--color-accent);
}

.footer-credits {
    text-align: right;
}

.footer-credits p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.footer-credits a {
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

.footer-credits a:hover {
    color: var(--color-accent);
}

.author-link {
    color: var(--color-accent) !important;
}

.copyright {
    font-size: 0.75rem !important;
    color: #666 !important;
    margin-top: var(--spacing-sm);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .folders-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }

    .nav-menu {
        width: 100%;
        justify-content: space-between;
    }

    .hero {
        padding: var(--spacing-lg) 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-logo-large {
        width: 200px;
        height: 200px;
        opacity: 1;
        right: 5%;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-credits {
        text-align: left;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }

    .folder-tab {
        left: 10px;
        padding: 0.5rem 1rem;
    }

    .folder-content {
        padding: var(--spacing-sm);
    }

    .folder-header h4 {
        font-size: 1.25rem;
    }

    .hero-logo-large {
        display: none;
    }
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.folder {
    animation: fadeInUp 0.6s ease backwards;
}

.folder:nth-child(1) {
    animation-delay: 0.1s;
}

.folder:nth-child(2) {
    animation-delay: 0.2s;
}

.folder:nth-child(3) {
    animation-delay: 0.3s;
}

.folder:nth-child(4) {
    animation-delay: 0.4s;
}

.folder:nth-child(5) {
    animation-delay: 0.5s;
}

.folder:nth-child(6) {
    animation-delay: 0.6s;
}

.folder:nth-child(7) {
    animation-delay: 0.7s;
}

/* === CONTACT SECTION === */
.contact {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.contact-text {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.contact-email {
    margin-top: var(--spacing-sm);
}

.contact-email p {
    font-size: 1rem;
    color: var(--color-text-muted);
}

.contact-email strong {
    color: var(--color-text-light);
}

.contact-email a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

.contact-email a:hover {
    color: var(--color-accent-hover);
}

/* Contact Form */
.contact-form {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid #333;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--color-bg-primary);
    border: 1px solid #333;
    border-radius: 6px;
    color: var(--color-text-light);
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255, 85, 0, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--color-accent);
    color: var(--color-text-dark);
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
    text-transform: uppercase;
}

.submit-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 85, 0, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: var(--spacing-md);
    }
}