/* ==========================================================================
   Design tokens
   ========================================================================== */
:root {
    --bg: #0a0c11;
    --bg-panel: #12151d;
    --bg-panel-2: #161a24;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f4f5f7;
    --text-muted: #9aa1ad;
    --accent: #2fd4c9;
    --accent-soft: rgba(47, 212, 201, 0.12);
    --blue: #3b82f6;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

html {
    overflow-x: hidden;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

.container {
    width: 88%;
    max-width: 1200px;
    margin: auto;
}

a {
    color: inherit;
}

/* ==========================================================================
   Top navigation
   ========================================================================== */
#site-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 22px 0;
    background: transparent;
    transition: background-color 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease, backdrop-filter 0.35s ease;
}

#site-nav.scrolled {
    background-color: rgba(10, 12, 17, 0.85);
    backdrop-filter: blur(10px);
    padding: 14px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.brand span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    transition: color 0.25s ease;
    position: relative;
    padding-bottom: 4px;
}

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
}

.nav-contact {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.nav-contact svg {
    width: 16px;
    height: 16px;
    stroke: var(--accent);
    flex-shrink: 0;
}

#nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
}

#nav-toggle svg {
    width: 22px;
    height: 22px;
    stroke: var(--text);
}

#mobile-nav {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: rgba(10, 12, 17, 0.97);
    border-top: 1px solid var(--border);
    padding: 16px 6%;
}

#mobile-nav a {
    display: block;
    padding: 12px 0;
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

#mobile-nav.open {
    display: flex;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg);
    padding: 150px 0 60px;
}

.hero-card {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 32px;
    padding: 64px;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 85% 15%, var(--accent-soft), transparent 55%);
    pointer-events: none;
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr 0.5fr;
    align-items: center;
    gap: 50px;
}

.hero-grid > * {
    min-width: 0;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.18em;
    font-size: 0.85rem;
    text-transform: uppercase;
    margin-bottom: 22px;
}

.hero-eyebrow::before {
    content: '';
    width: 34px;
    height: 2px;
    background: var(--accent);
    display: inline-block;
}

.hero-content {
    max-width: 560px;
}

.hero-greeting {
    font-size: 1.15rem;
    font-style: italic;
    color: var(--text-muted);
    margin: 0 0 8px;
}

.hero-heading {
    font-size: clamp(2.2rem, 4.4vw, 3.4rem);
    font-weight: 800;
    line-height: 1.1;
    text-transform: uppercase;
    margin: 0 0 22px;
    color: var(--text);
}

.hero-heading em {
    color: var(--accent);
    font-style: italic;
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 480px;
    margin: 0 0 36px;
    overflow-wrap: break-word;
}

.hero-content .btn-row {
    margin-bottom: 40px;
}

.btn-row {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

.btn-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    transition: all 0.3s ease;
    border: 1.5px solid var(--text);
    color: var(--text);
}

.btn-pill svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
}

.btn-pill:hover {
    transform: translateY(-2px);
    background: var(--text);
    color: var(--bg);
}

.btn-pill.filled {
    background: var(--accent);
    border-color: var(--accent);
    color: #04211f;
}

.btn-pill.filled:hover {
    background: transparent;
    color: var(--accent);
}

.hero-photo-wrap {
    position: relative;
    aspect-ratio: 4 / 5;
}

.hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 45% 55% 60% 40% / 55% 45% 55% 45%;
    filter: grayscale(35%) contrast(1.05);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
    border: 1px solid var(--border);
}

.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 26px;
    text-align: right;
    padding-left: 26px;
    border-left: 1px solid var(--border);
}

.hero-stat h3 {
    margin: 0 0 4px;
    font-size: clamp(1.4rem, 2.2vw, 1.9rem);
    font-weight: 800;
    color: var(--text);
}

.hero-stat p {
    margin: 0;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.hero-socials {
    display: flex;
    gap: 14px;
}

.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text);
    background: rgba(255, 255, 255, 0.03);
    transition: all 0.25s ease;
}

.icon-btn svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
}

.icon-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #04211f;
    transform: translateY(-3px);
}

/* ==========================================================================
   Section shared styles
   ========================================================================== */
section {
    padding: 110px 0;
}

.section-tag {
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.18em;
    font-size: 0.82rem;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.section-tag::before {
    content: '';
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.section-title {
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    font-weight: 800;
    margin: 0 0 20px;
    color: var(--text);
    text-align: left;
}

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

.section-tag.centered {
    justify-content: center;
}

.section-tag.centered::before {
    display: none;
}

/* ==========================================================================
   About
   ========================================================================== */
.about-section {
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.about-grid {
    max-width: 860px;
}

.about-email {
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 24px;
    display: inline-block;
    text-decoration: none;
}

.about-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 18px;
}

.about-meta {
    display: flex;
    gap: 40px;
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

.about-meta div h4 {
    margin: 0 0 6px;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

.about-meta div p {
    margin: 0;
    font-weight: 600;
    color: var(--text);
}

.about-photo-wrap {
    position: relative;
}

.about-photo-frame {
    position: absolute;
    top: -18px;
    right: -18px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent);
    border-radius: 14px;
    z-index: 0;
}

.about-photo {
    position: relative;
    z-index: 1;
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 14px;
    filter: grayscale(45%) contrast(1.05);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}

/* ==========================================================================
   Resume dashboard (skills / experience / education / hobbies)
   ========================================================================== */
.resume-section {
    background: var(--bg);
}

.resume-grid {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr 0.9fr;
    gap: 50px;
    margin-top: 20px;
}

.resume-block + .resume-block {
    margin-top: 46px;
}

.resume-heading {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text);
    margin-bottom: 22px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}

/* Tag lists */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-pill {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: var(--bg-panel);
}

/* Timeline (experience) */
.timeline {
    position: relative;
    padding-left: 46px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    margin-bottom: 34px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-icon {
    position: absolute;
    left: -46px;
    top: 0;
    width: 32px;
    height: 32px;
    border-radius: 9px;
    background: var(--blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-icon svg {
    width: 16px;
    height: 16px;
    stroke: #fff;
}

.timeline-item h4 {
    margin: 0 0 4px;
    font-size: 1rem;
    color: var(--text);
    font-weight: 700;
}

.timeline-item .role-meta {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 8px;
}

.timeline-item ul {
    margin: 0;
    padding-left: 18px;
    color: var(--text-muted);
    font-size: 0.92rem;
}

.timeline-item li {
    margin-bottom: 4px;
}

.education-item {
    padding: 18px 20px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.education-item h4 {
    margin: 0 0 6px;
    color: var(--text);
    font-size: 0.98rem;
}

.education-item p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* What can I do list */
.check-list {
    list-style: none;
    margin: 0 0 12px;
    padding: 0;
}

.check-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.94rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.check-list li::before {
    content: '';
    flex-shrink: 0;
    margin-top: 6px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--accent);
}

/* Hobbies icon grid */
.hobby-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.hobby-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
    padding: 18px 10px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.hobby-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.hobby-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hobby-icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--accent);
}

.hobby-card span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
}

/* ==========================================================================
   Projects
   ========================================================================== */
.projects-section {
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.project-group-title {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 60px 0 0;
}

.project-group-title:first-of-type {
    margin-top: 30px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.project-item {
    background: var(--bg-panel-2);
    padding: 30px;
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: transform 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-item:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
}

.project-number {
    color: var(--accent);
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    margin-bottom: 14px;
}

.project-item h3 {
    color: var(--text);
    font-size: 1.15rem;
    margin: 0 0 12px;
}

.project-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin: 0 0 22px;
    flex-grow: 1;
}

.project-item p.project-meta {
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 700;
    margin: 0 0 12px;
    flex-grow: 0;
}

.project-item a {
    align-self: flex-start;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project-item a svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    transition: transform 0.25s ease;
}

.project-item a:hover svg {
    transform: translate(3px, -3px);
}

/* ==========================================================================
   Vision
   ========================================================================== */
.vision-section {
    text-align: center;
}

.vision-quote {
    max-width: 820px;
    margin: 0 auto;
    font-size: 1.3rem;
    line-height: 1.7;
    color: var(--text);
    font-weight: 500;
    position: relative;
    padding: 0 20px;
}

.vision-quote span {
    color: var(--accent);
}

.vision-sub {
    max-width: 700px;
    margin: 24px auto 0;
    color: var(--text-muted);
    font-size: 1rem;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-section {
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    text-align: center;
}

.contact-details {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin: 36px 0 44px;
}

.contact-details div h4 {
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 8px;
}

.contact-details div p {
    margin: 0;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text);
}

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

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    padding: 30px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.88rem;
    border-top: 1px solid var(--border);
}

/* ==========================================================================
   Entrance animation (plays on load, no scroll/JS dependency)
   ========================================================================== */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    animation: fade-in-up 0.8s ease both;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
    .nav-links,
    .nav-contact {
        display: none;
    }

    #nav-toggle {
        display: inline-flex;
    }

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

    .about-photo-wrap {
        order: -1;
        max-width: 340px;
        margin: 0 auto;
    }

    .resume-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .contact-details {
        gap: 30px;
    }

    .hero-card {
        padding: 44px 28px;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-content {
        max-width: none;
    }

    .hero-photo-wrap {
        order: -1;
        max-width: 320px;
        aspect-ratio: 1 / 1;
        margin: 0 auto;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        text-align: left;
        border-left: none;
        border-top: 1px solid var(--border);
        padding-left: 0;
        padding-top: 26px;
        gap: 30px;
    }

    .hero-stat {
        min-width: 120px;
    }
}

@media (max-width: 560px) {
    .container {
        width: 92%;
    }

    section {
        padding: 80px 0;
    }

    .hero-section {
        padding: 120px 0 40px;
    }

    .btn-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .about-meta {
        flex-direction: column;
        gap: 18px;
    }
}