/* ═══════════════════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════════════════ */
:root {
    --bg-dark: #0d0d1a;
    --bg-purple: #2d0a4e;
    --bg-card: rgba(26, 26, 46, 0.85);
    --bg-card-hover: rgba(40, 20, 70, 0.9);
    --text-primary: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    --accent-purple: #7c3aed;
    --accent-cyan: #00e5ff;
    --accent-gold: #f5c542;
    --font-body: 'Space Grotesk', 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    --nav-height: 70px;
    --radius: 12px;
    --transition: .35s cubic-bezier(.4, 0, .2, 1);
}

/* ═══════════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════════ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-body);
    background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-purple) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Fade-in animation */
.section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .8s ease, transform .8s ease;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ═══════════════════════════════════════════════════
   SECTION DIVIDER
   ═══════════════════════════════════════════════════ */
.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0.5rem 1.5rem;
    gap: 1rem;
}

.section-divider::before,
.section-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(124, 58, 237, .45), transparent);
}

.divider-diamond {
    color: var(--accent-purple);
    font-size: 0.8rem;
    opacity: 0.6;
    letter-spacing: 4px;
}

/* ═══════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════ */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(13, 13, 26, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(124, 58, 237, 0.15);
    transition: background var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-primary);
}

.logo-accent {
    color: var(--accent-purple);
}

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

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    padding: 4px 0;
    transition: color var(--transition);
}

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-cyan);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Language toggle */
.lang-toggle {
    background: transparent;
    border: 1px solid rgba(124, 58, 237, .5);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 1px;
}

.lang-toggle:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.lang-toggle .lang-active {
    color: var(--accent-cyan);
    font-weight: 700;
}

/* Hamburger */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    position: absolute;
    left: 0;
    transition: all .3s;
}

.hamburger span:nth-child(1) {
    top: 0;
}

.hamburger span:nth-child(2) {
    top: 11px;
}

.hamburger span:nth-child(3) {
    top: 22px;
}

.hamburger.open span:nth-child(1) {
    top: 11px;
    transform: rotate(45deg);
}

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

.hamburger.open span:nth-child(3) {
    top: 11px;
    transform: rotate(-45deg);
}

/* ═══════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + 2rem) 1.5rem 2rem;
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
}

.hero-text {
    flex: 1;
}

.hero-greeting {
    font-size: 1.35rem;
    color: var(--accent-cyan);
    margin-bottom: 0.6rem;
    font-weight: 400;
}

.hero-name {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 0.6rem;
    background: linear-gradient(135deg, #fff 60%, var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-name .cursor {
    display: inline-block;
    color: var(--accent-cyan);
    -webkit-text-fill-color: var(--accent-cyan);
    font-weight: 300;
    animation: blink 1s step-end infinite;
    margin-left: 4px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-role {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.hero-socials {
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid rgba(124, 58, 237, .4);
    color: var(--text-muted);
    transition: all var(--transition);
}

.social-icon:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 229, 255, .15);
    transform: translateY(-3px);
}

.hero-avatar {
    flex: 0 0 auto;
}

.avatar-placeholder {
    width: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 40px rgba(124, 58, 237, .2));
    transition: all var(--transition);
}

.avatar-placeholder:hover {
    filter: drop-shadow(0 0 50px rgba(0, 229, 255, .18));
    transform: scale(1.04);
}

.avatar-placeholder img {
    width: 100%;
    height: auto;
}

/* ═══════════════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════════════ */
#about {
    padding: 6rem 1.5rem;
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 4rem;
}

.about-image {
    flex: 0 0 400px;
    max-width: 100%;
}

.about-illustration {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid rgba(124, 58, 237, 0.5);
    box-shadow: 0 0 30px rgba(124, 58, 237, 0.2);
    transition: all var(--transition);
}

.about-illustration:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 40px rgba(0, 229, 255, 0.2);
    transform: translateY(-5px);
}

.about-perfil-img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 70vh;
    object-fit: cover;
}

.about-text {
    flex: 1;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.section-title.gold {
    color: var(--accent-gold);
}

.section-title.center {
    text-align: center;
}

.about-description {
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 1.9;
}

.about-description strong {
    color: var(--text-primary);
}

.highlight {
    color: var(--accent-cyan);
    font-weight: 600;
}

.about-description br {
    content: "";
    display: block;
    margin-bottom: 0.5rem;
}

/* ═══════════════════════════════════════════════════
   PROJECTS
   ═══════════════════════════════════════════════════ */
#projects {
    padding: 6rem 1.5rem;
}

.projects-grid {
    max-width: 1200px;
    margin: 2rem auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid rgba(124, 58, 237, .2);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-cyan);
    box-shadow: 0 12px 40px rgba(0, 229, 255, .08);
}

.card-preview {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 13, 26, .6);
}

.card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.card-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    flex: 1;
}

.card-tag {
    display: inline-block;
    font-size: 0.7rem;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(124, 58, 237, .2);
    color: var(--accent-purple);
    margin-bottom: 1rem;
    width: fit-content;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 600;
}

.card-btn {
    display: inline-block;
    font-size: 0.82rem;
    padding: 8px 20px;
    border-radius: 6px;
    border: 1px solid var(--accent-purple);
    color: var(--accent-purple);
    text-align: center;
    transition: all var(--transition);
    font-weight: 600;
    letter-spacing: .5px;
}

.card-btn:hover {
    background: var(--accent-purple);
    color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(124, 58, 237, .3);
}

.coming-soon {
    opacity: .55;
    pointer-events: none;
}

.projects-repo {
    text-align: center;
    margin-top: 2rem;
}

.projects-repo a {
    font-size: 0.9rem;
    color: var(--accent-cyan);
    transition: color var(--transition);
    border-bottom: 1px dashed rgba(0, 229, 255, .3);
    padding-bottom: 2px;
}

.projects-repo a:hover {
    color: var(--accent-gold);
}

/* ═══════════════════════════════════════════════════
   SKILLS
   ═══════════════════════════════════════════════════ */
#skills {
    padding: 6rem 1.5rem;
}

.skills-grid {
    max-width: 800px;
    margin: 2rem auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.skills-wrapper {
    display: flex;
    justify-content: center;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.skill-column {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.skill-card {
    background: transparent;
    border: none;
    border-radius: var(--radius);
    padding: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 2.8rem;
    color: var(--text-muted);
    font-family: var(--font-body);
}

.skill-card:hover,
.skill-card.active {
    transform: translateY(-6px) scale(1.15);
    filter: drop-shadow(0 0 12px currentColor);
}

/* Brand colors per icon */
.skill-card[data-skill="html"]:hover,
.skill-card[data-skill="html"].active {
    color: #e34f26;
}

.skill-card[data-skill="css"]:hover,
.skill-card[data-skill="css"].active {
    color: #1572b6;
}

.skill-card[data-skill="js"]:hover,
.skill-card[data-skill="js"].active {
    color: #f7df1e;
}

.skill-card[data-skill="react"]:hover,
.skill-card[data-skill="react"].active {
    color: #61dafb;
}

.skill-card[data-skill="next"]:hover,
.skill-card[data-skill="next"].active {
    color: #ffffff;
}

.skill-card[data-skill="java"]:hover,
.skill-card[data-skill="java"].active {
    color: #ed8b00;
}

.skill-card[data-skill="github"]:hover,
.skill-card[data-skill="github"].active {
    color: #ffffff;
}

.skill-card[data-skill="git"]:hover,
.skill-card[data-skill="git"].active {
    color: #f05032;
}

.skill-card[data-skill="postgresql"]:hover,
.skill-card[data-skill="postgresql"].active {
    color: #336791;
}

.skill-category-title {
    font-size: 1.1rem;
    color: var(--accent-purple);
    text-align: center;
    margin-top: 1rem;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    opacity: 0.9;
    border-bottom: 1px solid rgba(124, 58, 237, 0.2);
    padding-bottom: 0.5rem;
    display: inline-block;
    align-self: center;
}

.skill-detail {
    max-width: 600px;
    margin: 2rem auto 0;
    text-align: center;
    min-height: 60px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .3s, transform .3s;
}

.skill-detail.show {
    opacity: 1;
    transform: translateY(0);
}

.skill-detail-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: .3rem;
}

.skill-detail-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════════ */
#contact {
    padding: 6rem 1.5rem;
}

.contact-form {
    max-width: 620px;
    margin: 2rem auto 0;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    background: rgba(26, 26, 46, .65);
    border: 1px solid rgba(124, 58, 237, .15);
    border-radius: var(--radius);
    padding: 2.5rem;
    backdrop-filter: blur(8px);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: .4rem;
}

.form-group label {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.form-group input,
.form-group textarea {
    background: rgba(13, 13, 26, .6);
    border: 1px solid rgba(124, 58, 237, .25);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, .08);
}

.form-submit {
    align-self: flex-start;
    padding: 12px 36px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    background: var(--accent-purple);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
}

.form-submit:hover {
    background: var(--accent-cyan);
    color: var(--bg-dark);
    box-shadow: 0 4px 24px rgba(0, 229, 255, .25);
}

/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */
.footer {
    text-align: center;
    padding: 2rem 1.5rem;
    border-top: 1px solid rgba(124, 58, 237, .12);
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════ */
@media (max-width: 900px) {
    .projects-grid {
        grid-template-columns: 1fr 1fr;
    }

    .about-container {
        flex-direction: column;
        text-align: center;
    }

    .about-image {
        flex: none;
    }

    .skills-wrapper {
        flex-direction: column;
        gap: 2rem;
    }

    .skill-column {
        width: 100%;
    }

    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: rgba(13, 13, 26, .97);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: calc(var(--nav-height) + 2rem) 2rem 2rem;
        gap: 1.5rem;
        transition: right .4s ease;
        border-left: 1px solid rgba(124, 58, 237, .2);
    }

    .nav-links.open {
        right: 0;
    }

    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
        gap: 1.5rem;
    }

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

    .avatar-placeholder {
        width: 300px;
        height: auto;
    }

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

    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-name {
        font-size: 2rem;
    }
}