@import url("https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Syne:wght@400;600;800&display=swap");

:root {
    --bg: #0a0a0f;
    --bg2: #111118;
    --accent: #00ff88;
    --accent2: #0088ff;
    --text: #e8e8f0;
    --text-dim: #888899;
    --border: #222233;
    --radius: 12px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: "Space Mono", monospace;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent);
    color: var(--bg);
}

/* Subtle background pattern */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 255, 136, 0.05), transparent),
        radial-gradient(ellipse 50% 50% at 80% 80%, rgba(0, 136, 255, 0.04), transparent);
    pointer-events: none;
    z-index: -1;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4 {
    font-family: "Syne", sans-serif;
    font-weight: 800;
    line-height: 1.15;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: 2px;
}

h3 {
    font-size: 1.3rem;
    font-weight: 600;
}

/* ============================================
   LAYOUT
   ============================================ */
section {
    padding: 6rem 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

/* ============================================
   SKIP LINK
   ============================================ */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 200;
    font-family: "Space Mono", monospace;
    font-size: 0.85rem;
    font-weight: 700;
    background: var(--accent);
    color: var(--bg);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0.75rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

nav.scrolled {
    padding: 0.6rem 2rem;
    background: rgba(10, 10, 15, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.logo {
    font-family: "Syne", sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.5px;
}

nav ul {
    display: flex;
    gap: 2rem;
}

nav ul a {
    font-size: 0.85rem;
    color: var(--text-dim);
    transition: color 0.25s;
    position: relative;
    padding: 0.3rem 0;
}

nav ul a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.25s ease;
}

nav ul a:hover,
nav ul a.active {
    color: var(--text);
}

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

/* Language button */
#langBtn {
    font-family: "Space Mono", monospace;
    font-size: 0.8rem;
    font-weight: 700;
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.25s;
}

#langBtn:hover {
    background: var(--accent);
    color: var(--bg);
}

/* Hamburger */
#menuToggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 101;
}

#menuToggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

#menuToggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
#menuToggle.open span:nth-child(2) {
    opacity: 0;
}
#menuToggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-top: 5rem;
}

#hero h1 {
    margin-bottom: 0.5rem;
}

#hero .name {
    color: var(--accent);
}

#hero h2 {
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 400;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
}

#hero h2::after {
    display: none;
}

#hero .tagline {
    font-size: 1rem;
    color: var(--text-dim);
    max-width: 560px;
    margin-bottom: 2.5rem;
}

/* CTA Button */
.btn {
    font-family: "Space Mono", monospace;
    font-size: 0.9rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    border: 2px solid var(--accent);
    color: var(--accent);
    border-radius: var(--radius);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background: transparent;
}

.btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
    z-index: -1;
}

.btn:hover {
    color: var(--bg);
}

.btn:hover::before {
    transform: scaleX(1);
}

.btn .arrow {
    display: inline-block;
    transition: transform 0.3s ease;
}

.btn:hover .arrow {
    transform: translateX(4px);
}

/* Hero decorative element */
#hero::after {
    content: "";
    position: absolute;
    top: 20%;
    right: 5%;
    width: 300px;
    height: 300px;
    border: 1px solid rgba(0, 255, 136, 0.1);
    border-radius: 50%;
    pointer-events: none;
}

/* ============================================
   ABOUT
   ============================================ */
#about {
    position: relative;
}

#about .about-content {
    max-width: 700px;
}

#about p {
    font-size: 1.05rem;
    color: var(--text-dim);
    margin-bottom: 1.2rem;
}

#about p strong {
    color: var(--text);
    font-weight: 700;
}

/* ============================================
   SKILLS
   ============================================ */
#skills .skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
}

.skill-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: default;
}

.skill-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 255, 136, 0.08);
}

.skill-card .skill-icon {
    color: var(--text-dim);
    margin-bottom: 0.6rem;
    line-height: 0;
    transition: color 0.3s ease;
    display: flex;
    justify-content: center;
}

.skill-card .skill-icon svg,
.skill-card .skill-icon img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.skill-card .skill-icon img {
    filter: grayscale(1) brightness(0.75) contrast(0.85);
    transition: filter 0.4s ease;
}

.skill-card:hover .skill-icon img {
    filter: grayscale(0) brightness(1);
}

.skill-card:hover .skill-icon {
    color: var(--accent);
}

.skill-card .skill-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text);
}

/* ============================================
   CERTIFICATES
   ============================================ */
.certs-category {
    font-family: "Syne", sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--accent);
    margin: 2rem 0 1rem;
}

.certs-category:first-of-type {
    margin-top: 0;
}

#certificates .certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

#certificates .certificates-grid .certificate-card:only-of-type {
    max-width: 450px;
}

.certificate-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.8rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
    min-width: 0;
    overflow-wrap: break-word;
}

.certificate-card:hover {
    border-color: var(--accent2);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 136, 255, 0.08);
}

.certificate-card .cert-icon {
    color: var(--text-dim);
    flex-shrink: 0;
    line-height: 0;
    transition: color 0.3s ease;
    display: flex;
    justify-content: center;
}

.certificate-card .cert-icon svg,
.certificate-card .cert-icon img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.certificate-card .cert-icon img {
    filter: grayscale(1) brightness(0.75) contrast(0.85);
    transition: filter 0.4s ease;
}

.certificate-card:hover .cert-icon img,
.cert-icon:hover img {
    filter: grayscale(0) brightness(1);
}

.certificate-card:hover .cert-icon {
    color: var(--accent2);
}

.certificate-card .cert-info h4 {
    font-family: "Syne", sans-serif;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.certificate-card .cert-info p {
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 0.3rem;
}

.certificate-card .cert-info .cert-link {
    font-size: 0.8rem;
    color: var(--accent2);
    transition: color 0.2s;
}

.certificate-card .cert-info .cert-link:hover {
    color: var(--accent);
}

/* ============================================
   PROJECTS
   ============================================ */
#projects .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    min-width: 0;
    overflow-wrap: break-word;
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 255, 136, 0.06);
}

.project-card--featured {
    border-color: rgba(0, 255, 136, 0.2);
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.03), var(--bg2));
}

.project-card h3 {
    font-family: "Syne", sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.project-card .project-desc {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-card .project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.2rem;
    min-width: 0;
}

.project-card .project-tech span {
    font-size: 0.72rem;
    background: rgba(0, 255, 136, 0.08);
    color: var(--accent);
    padding: 0.25rem 0.7rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 255, 136, 0.15);
}

.project-card .project-links {
    display: flex;
    gap: 1rem;
}

.project-card .project-link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: color 0.2s;
}

.project-card .project-link:hover {
    color: var(--accent2);
}

.project-card .project-link--soon {
    color: var(--text-dim);
    cursor: default;
    opacity: 0.5;
}

.project-card .project-link--soon:hover {
    color: var(--text-dim);
}

/* ============================================
   CONTACT
   ============================================ */
#contact {
    text-align: center;
}

#contact h2::after {
    left: 50%;
    transform: translateX(-50%);
}

#contact .contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    padding: 1rem 2rem;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.contact-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
}

.contact-link .contact-icon {
    color: var(--text-dim);
    line-height: 0;
    transition: color 0.3s ease;
}

.contact-link .contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-link:hover .contact-icon {
    color: var(--accent);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    text-align: center;
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Stagger children */
.reveal-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-children.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-children.visible > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-children.visible > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-children.visible > *:nth-child(5) { transition-delay: 0.4s; }
.reveal-children.visible > *:nth-child(6) { transition-delay: 0.5s; }
.reveal-children.visible > *:nth-child(7) { transition-delay: 0.6s; }
.reveal-children.visible > *:nth-child(8) { transition-delay: 0.7s; }
.reveal-children.visible > *:nth-child(9) { transition-delay: 0.8s; }
.reveal-children.visible > *:nth-child(10) { transition-delay: 0.9s; }

.reveal-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    section {
        padding: 4rem 1.25rem;
    }

    nav {
        padding: 0.8rem 1.25rem;
    }

    #menuToggle {
        display: flex;
    }

    nav ul {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 320px;
        height: 100vh;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        background: rgba(10, 10, 15, 0.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-left: 1px solid var(--border);
        transition: right 0.35s ease;
    }

    nav ul.open {
        right: 0;
    }

    nav ul a {
        font-size: 1.1rem;
    }

    #langBtn {
        margin-right: 0.5rem;
    }

    #hero {
        align-items: center;
        text-align: center;
    }

    #hero .tagline {
        text-align: center;
    }

    #hero::after {
        display: none;
    }

    h2::after {
        left: 50%;
        transform: translateX(-50%);
    }

    #about,
    #skills,
    #certificates,
    #projects {
        text-align: center;
    }

    #about .about-content {
        text-align: left;
    }

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

    .certificates-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)) !important;
    }

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

    .certs-category {
        font-size: 1rem;
    }

    #contact h2::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 480px) {
    section {
        padding: 3rem 1rem;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .certificates-grid {
        grid-template-columns: 1fr !important;
    }

    .certificate-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.2rem;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

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

    footer {
        font-size: 0.7rem;
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 360px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.6rem;
    }

    .skill-card {
        padding: 1rem 0.5rem;
    }

    .skill-card .skill-icon svg,
    .skill-card .skill-icon img {
        width: 28px;
        height: 28px;
    }

    .skill-card .skill-name {
        font-size: 0.75rem;
    }

    .project-card {
        padding: 1.2rem;
    }

    .btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.8rem;
    }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
    nav,
    .skip-link,
    #langBtn,
    #menuToggle,
    #hero::after,
    body::before {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
        font-size: 12pt;
    }

    section {
        padding: 1.5rem 0;
        max-width: 100%;
        break-inside: avoid;
    }

    .skill-card,
    .certificate-card,
    .project-card,
    .contact-link {
        background: #f5f5f5;
        border: 1px solid #ccc;
        break-inside: avoid;
    }

    a {
        color: #0066cc;
        text-decoration: underline;
    }

    .reveal,
    .reveal-children > * {
        opacity: 1 !important;
        transform: none !important;
    }
}