/* ══════════════════════════════════════════════════════════════════════
   JUAN HERNANDEZ — PORTFOLIO STYLES
   ══════════════════════════════════════════════════════════════════════ */

/* 1. VARIABLES & GLOBAL SETUP
   ══════════════════════════════════════════════════════════════════════ */
:root {
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --primary-bg: #ffffff;
    --secondary-bg: #f4f6f9;
    --text-main: #1a1d21;
    --text-muted: #64748b;
    --accent-blue: #0070f3;
    --accent-co: #f59e0b;      /* amber — Colombia-focused projects */
    --border-color: #e2e8f0;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-height: 72px;
    --section-border: 3px solid var(--accent-blue);
}

body.dark-mode {
    --primary-bg: #121212;
    --secondary-bg: #1a1a1a;
    --text-main: #f0f0f0;
    --text-muted: #a0a0a0;
    --accent-blue: #3d9afc;
    --accent-co: #fbbf24;
    --border-color: #2a2a2a;
    --nav-bg: rgba(18, 18, 18, 0.95);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Fixes the "nav covers the heading" bug on anchor scroll */
html {
    scroll-padding-top: calc(var(--nav-height) + 24px);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-main);
    background-color: var(--primary-bg);
    line-height: 1.6;
    padding-top: var(--nav-height);
    transition: background-color 0.3s ease, color 0.3s ease;
}


/* 2. NAVIGATION
   ══════════════════════════════════════════════════════════════════════ */
nav {
    padding: 0 8%;
    height: var(--nav-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: background 0.3s ease;
}

.logo {
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
    padding: 0.4rem 0;
    border-bottom: 2px solid transparent;
}

.nav-links a:hover {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

#theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    padding: 8px;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: var(--text-main);
}

#theme-toggle:hover {
    border-color: var(--accent-blue);
}

.icon-sun { display: none; }
.icon-moon { display: block; }
body.dark-mode .icon-sun { display: block; }
body.dark-mode .icon-moon { display: none; }


/* 3. HERO
   ══════════════════════════════════════════════════════════════════════ */
.hero {
    min-height: calc(100vh - var(--nav-height));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    padding: 5rem 8%;
    background: var(--primary-bg);
}

.hero-text {
    flex: 1.2;
    min-width: 320px;
}

.intro-text {
    color: var(--accent-blue);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.hero-text h1 {
    font-size: 4.2rem;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -2.5px;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.hero-role {
    font-size: 1.5rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 1.2rem;
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 520px;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.social-links {
    display: flex;
    gap: 1.2rem;
}

.social-links a {
    opacity: 0.5;
    transition: opacity 0.2s;
}

.social-links a:hover {
    opacity: 1;
}

.hero-image {
    flex: 0.8;
    display: flex;
    justify-content: center;
    min-width: 260px;
}

.hero-image-ring {
    padding: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 112, 243, 0.15), rgba(0, 112, 243, 0.04));
}

.hero-image-ring img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 7px solid var(--primary-bg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    display: block;
}


/* 4. BUTTONS
   ══════════════════════════════════════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    box-shadow: 0 4px 14px rgba(0, 112, 243, 0.3);
}

.btn-primary:hover {
    background: #005fcc;
    box-shadow: 0 6px 20px rgba(0, 112, 243, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--primary-bg);
    color: var(--text-main);
    border: 1.5px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-1px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
}


/* 5. SECTION STRUCTURE
   ══════════════════════════════════════════════════════════════════════ */
.section {
    width: 100%;
    padding: 6rem 0;
    border-top: var(--section-border);
    background: var(--primary-bg);
}

.section-alt {
    background: var(--secondary-bg);
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 4%;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-blue);
    margin-bottom: 0.75rem;
}

.section-header h2 {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--text-main);
    border: none;
    padding: 0;
    margin: 0;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

/* Keep the h2 border-left only when inside card/skill contexts */
.skills-card h3,
.resume-card h3 {
    border: none;
    padding: 0;
}

.resume-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 0.5rem;
}


/* 6. ABOUT
   ══════════════════════════════════════════════════════════════════════ */
.about-layout {
    display: flex;
    gap: 4rem;
    align-items: flex-start;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.about-image {
    flex: 0 0 300px;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.about-text {
    flex: 1;
    min-width: 280px;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--accent-blue);
    font-weight: 700;
    margin-bottom: 1.2rem;
}

.about-text p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.about-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.about-icon {
    background: rgba(0, 112, 243, 0.08);
    padding: 12px;
    border-radius: 12px;
    color: var(--accent-blue);
    font-weight: 800;
    font-size: 1.1rem;
    min-width: 46px;
    text-align: center;
}

.about-item h4 {
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.3rem;
}

.about-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
}


/* 7. RESUME
   ══════════════════════════════════════════════════════════════════════ */
.resume-card {
    text-align: center;
    padding: 4rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
}

.resume-card h3 {
    font-size: 1.6rem;
    font-weight: 700;
}

.resume-card p {
    color: var(--text-muted);
    max-width: 600px;
    font-size: 1.05rem;
}


/* 8. PROJECTS — HORIZONTAL SCROLL CAROUSEL
   ══════════════════════════════════════════════════════════════════════ */
.projects-scroll {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: 0.5rem 0 1.5rem;
    /* Custom scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--accent-blue) var(--border-color);
    cursor: grab;
}

.projects-scroll::-webkit-scrollbar {
    height: 6px;
}

.projects-scroll::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 10px;
}

.projects-scroll::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 10px;
}

.projects-scroll:active {
    cursor: grabbing;
}

/* Individual project card */
.proj-card {
    min-width: 420px;
    max-width: 420px;
    scroll-snap-align: start;
    flex-shrink: 0;
    background: var(--primary-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 16px;
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    transition: all 0.3s ease;
}

.proj-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--accent-blue);
}

.proj-card--soon {
    opacity: 0.85;
}

.proj-top {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.proj-domain {
    display: inline-flex;
    align-items: center;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent-blue);
    background: rgba(0, 112, 243, 0.08);
    padding: 0.3rem 0.75rem;
    border-radius: 50px;
    width: fit-content;
}

.proj-domain--co {
    color: var(--accent-co);
    background: rgba(245, 158, 11, 0.1);
}

.proj-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.4;
}

.proj-company {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.proj-impact strong {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent-blue);
    margin-bottom: 0.4rem;
}

.proj-impact p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Metric chips row */
.proj-metrics {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.metric-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(0, 112, 243, 0.06);
    border: 1px solid rgba(0, 112, 243, 0.15);
    border-radius: 10px;
    padding: 0.5rem 0.9rem;
    min-width: 72px;
}

.metric-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.metric-value {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--accent-blue);
}

/* Status badge for upcoming projects */
.proj-status {
    flex: 1;
    display: flex;
    align-items: flex-end;
}

.status-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.35rem 0.9rem;
    border-radius: 50px;
    background: rgba(0, 112, 243, 0.1);
    color: var(--accent-blue);
    border: 1px solid rgba(0, 112, 243, 0.2);
}

.status-badge--upcoming {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-co);
    border-color: rgba(245, 158, 11, 0.25);
}

/* Tech stack tags */
.proj-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

.proj-tech span {
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--secondary-bg);
    color: var(--text-muted);
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

/* Chart preview image at top of project card */
.proj-img {
    width: 100%;
    height: 185px;
    object-fit: contain;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: #0d1117;
    display: block;
}

.proj-link {
    display: inline-block;
    margin-top: 0.5rem;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--accent-blue);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
    width: fit-content;
}

.proj-link:hover {
    border-bottom-color: var(--accent-blue);
}

/* "See all" footer below carousel */
.projects-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.projects-footer p {
    color: var(--text-muted);
    font-size: 0.95rem;
}


/* 9. SKILLS
   ══════════════════════════════════════════════════════════════════════ */
.skills-legend {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.4rem;
    vertical-align: middle;
}

.dot-green { background: #22c55e; }
.dot-blue  { background: #3b82f6; }

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
    gap: 2rem;
}

.skills-card {
    padding: 2rem;
}

.skills-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skills-icon {
    background: rgba(0, 112, 243, 0.08);
    padding: 10px;
    border-radius: 10px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.skills-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
}

.skill-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.skill-pill {
    padding: 0.4rem 0.9rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.skill-pill.proficient {
    background: rgba(34, 197, 94, 0.07);
    border-color: rgba(34, 197, 94, 0.25);
    color: #16a34a;
}

.skill-pill.intermediate {
    background: rgba(59, 130, 246, 0.07);
    border-color: rgba(59, 130, 246, 0.2);
    color: #2563eb;
}

body.dark-mode .skill-pill.proficient {
    background: rgba(34, 197, 94, 0.12);
    color: #4ade80;
}

body.dark-mode .skill-pill.intermediate {
    background: rgba(59, 130, 246, 0.12);
    color: #60a5fa;
}

.skill-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.06);
}


/* 10. CONTACT
   ══════════════════════════════════════════════════════════════════════ */
.contact-layout {
    display: flex;
    gap: 5rem;
    align-items: center;
    flex-wrap: wrap;
}

.contact-text {
    flex: 1.2;
    min-width: 280px;
}

.contact-text h3 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 1.2rem;
    color: var(--text-main);
}

.contact-text p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.contact-cards {
    flex: 0.8;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-card-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.1rem 1.4rem;
    background: var(--primary-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 14px;
    transition: all 0.3s ease;
}

.contact-card-link:hover {
    transform: translateX(8px);
    border-color: var(--accent-blue);
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}

.contact-icon-box {
    background: rgba(0, 112, 243, 0.08);
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-title {
    display: block;
    font-weight: 700;
    color: var(--text-main);
    font-size: 0.95rem;
}

.contact-sub {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 0.1rem;
}


/* 11. GENERIC CARD
   ══════════════════════════════════════════════════════════════════════ */
.card {
    background: var(--primary-bg);
    border-radius: 16px;
    border: 1.5px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.07);
    border-color: var(--accent-blue);
}

/* Swap card background when inside alt section */
.section-alt .card,
.section-alt .proj-card,
.section-alt .contact-card-link {
    background: var(--primary-bg);
}


/* 12. FOOTER
   ══════════════════════════════════════════════════════════════════════ */
footer {
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    background: var(--primary-bg);
}


/* 13. MOBILE RESPONSIVENESS
   ══════════════════════════════════════════════════════════════════════ */

/* Hamburger button — hidden on desktop */
.nav-hamburger {
    display: none;
    background: none;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    padding: 7px 10px;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--text-main);
    line-height: 1;
    transition: border-color 0.2s, color 0.2s;
    margin-left: 0.5rem;
}
.nav-hamburger:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

@media (max-width: 768px) {
    html, body {
        overflow-x: hidden;
        width: 100%;
    }

    body {
        padding-top: 68px;
    }

    html {
        scroll-padding-top: 84px;
    }

    /* ── Nav: single row with hamburger ── */
    nav {
        flex-direction: row;
        flex-wrap: wrap;
        height: auto;
        padding: 0 5%;
        min-height: 64px;
        align-items: center;
        gap: 0;
    }

    .logo {
        flex: 1;
    }

    /* Hide links by default; show when .open */
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding: 0.5rem 0 1.2rem;
        border-top: 1px solid var(--border-color);
        margin-top: 0.4rem;
        gap: 0;
        list-style: none;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.85rem 0;
        font-size: 1rem;
        border-bottom: none;
        width: 100%;
    }

    .nav-hamburger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* Keep theme + lang toggle visible in the top row */
    .theme-switch-wrapper {
        display: flex;
        align-items: center;
        gap: 0.4rem;
        margin-right: 0.2rem;
    }

    /* ── Hero ── */
    .hero {
        flex-direction: column-reverse;
        padding: 2.5rem 5%;
        text-align: center;
        min-height: unset;
        gap: 2rem;
    }

    .hero-text h1 {
        font-size: 2.4rem;
        letter-spacing: -1px;
    }

    .hero-role {
        font-size: 1.1rem;
    }

    .tagline {
        font-size: 1rem;
    }

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

    .hero-buttons .btn {
        min-height: 48px;
        display: inline-flex;
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }

    .hero-image-ring img {
        width: 180px;
        height: 180px;
    }

    /* ── Sections ── */
    .section {
        padding: 3.5rem 0;
    }

    .section-inner {
        padding: 0 5%;
    }

    .section-header h2 {
        font-size: 1.9rem;
    }

    /* ── About ── */
    .about-layout {
        flex-direction: column;
        gap: 2rem;
    }

    .about-image {
        flex: unset;
        width: 100%;
        max-width: 240px;
        margin: 0 auto;
    }

    .about-text h3 {
        font-size: 1.4rem;
    }

    /* ── Resume ── */
    .resume-card {
        padding: 2.5rem 1.2rem;
    }

    .resume-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .resume-buttons .btn {
        text-align: center;
        justify-content: center;
        min-height: 52px;
    }

    /* ── Projects carousel ── */
    .proj-card {
        min-width: 300px;
        max-width: 300px;
    }

    .proj-img {
        height: 160px;
    }

    /* ── Skills grid ── */
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .skill-pill {
        min-height: 36px;
        display: inline-flex;
        align-items: center;
    }

    /* ── Contact ── */
    .contact-layout {
        flex-direction: column;
        gap: 2.5rem;
    }

    .contact-text h3 {
        font-size: 1.5rem;
    }

    .contact-cards {
        width: 100%;
    }

    .contact-card-link {
        min-height: 72px;
    }

    .contact-card-link:hover {
        transform: none;
    }

    /* ── Projects footer ── */
    .projects-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    /* ── Buttons — min touch target ── */
    .btn {
        min-height: 48px;
    }
}

/* Extra small screens (iPhone SE, etc.) */
@media (max-width: 380px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .proj-card {
        min-width: 270px;
        max-width: 270px;
    }

    .section-header h2 {
        font-size: 1.7rem;
    }
}