/* ============================================================
    Tosca + Blue color scheme — full CSS embedded
 ============================================================ */
:root {
    /* surfaces — deep navy/slate, cool but not purple */
    --bg: #080c12;
    --bg-soft: #0d121c;
    --surface: #131a26;
    --surface-2: #1a2332;
    --border: #263040;
    --border-soft: #1a2332;

    /* text — cool off-white & slate grays */
    --text-primary: #eef2f6;
    --text-secondary: #94a3b8;
    --text-tertiary: #5a6a7c;

    /* signal colors — tosca (teal) + blue */
    --accent: #3aa8a1;
    /* tosca / teal — primary */
    --accent-soft: rgba(58, 168, 161, 0.15);
    --accent-2: #5b8def;
    /* bright blue — secondary */
    --accent-2-soft: rgba(91, 141, 239, 0.15);
    --warn: #e6a94a;
    /* warm amber — status */
    --danger: #e96874;
    /* muted rose-red — errors */

    /* type */
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

    /* layout */
    --max-w: 1120px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2.5rem;
    --space-5: 4rem;
    --space-6: 6.5rem;

    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------------------------------- reset -------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

h1,
h2,
h3,
h4 {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
}

p {
    margin: 0;
}

button {
    font: inherit;
    cursor: pointer;
}

::selection {
    background: var(--accent);
    color: #080c12;
}

/* focus visibility */
a:focus-visible,
button:focus-visible,
.nav-link:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 3px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ------------------------------- background ------------------------------ */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: -2;
    background-image: radial-gradient(circle at 1.5px 1.5px, rgba(255, 255, 255, 0.045) 1.5px, transparent 0);
    background-size: 34px 34px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 90%);
}

.bg-glow {
    position: fixed;
    z-index: -1;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(600px circle at 15% 10%, var(--accent-soft), transparent 60%),
        radial-gradient(500px circle at 85% 30%, var(--accent-2-soft), transparent 60%);
}

/* --------------------------------- layout -------------------------------- */
.wrap {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--space-3);
}

section {
    padding: var(--space-6) 0;
    position: relative;
}

.section-head {
    margin-bottom: var(--space-4);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-2);
    letter-spacing: 0.06em;
    margin-bottom: var(--space-2);
}

.eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-2);
    box-shadow: 0 0 8px var(--accent-2);
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.1rem);
}

.section-sub {
    color: var(--text-secondary);
    margin-top: var(--space-1);
    max-width: 46ch;
}

/* ---------------------------------- nav ---------------------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.nav.scrolled {
    background: rgba(8, 12, 18, 0.78);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom-color: var(--border-soft);
}

.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--space-3);
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.98rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo .dot {
    color: var(--accent-2);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav-link {
    position: relative;
    font-size: 0.92rem;
    color: var(--text-secondary);
    padding: 6px 2px;
    transition: color 0.2s var(--ease);
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 100%;
    bottom: 0;
    height: 1px;
    background: var(--accent-2);
    transition: right 0.25s var(--ease);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    right: 0;
}

.status-pill {
    display: flex;
    align-items: center;
    gap: 0.5em;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--surface);
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--warn);
    box-shadow: 0 0 8px var(--warn);
    animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.55;
        transform: scale(0.82);
    }
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.nav-toggle svg {
    width: 18px;
    height: 18px;
}

.mobile-menu {
    position: fixed;
    inset: 68px 0 0 0;
    z-index: 99;
    background: rgba(8, 12, 18, 0.98);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    padding: var(--space-4) var(--space-3);
    gap: var(--space-2);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

.mobile-menu.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.mobile-menu .nav-link {
    font-size: 1.2rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-soft);
    color: var(--text-primary);
}

/* --------------------------------- hero ---------------------------------- */
.hero {
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: var(--space-5);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--space-5);
    align-items: center;
}

.hero-label {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-2);
    margin-bottom: var(--space-2);
    display: inline-block;
}

.hero-label::before {
    content: '> ';
    color: var(--text-tertiary);
}

.hero-title {
    font-size: clamp(2.4rem, 5.6vw, 4.1rem);
    line-height: 1.06;
}

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

.hero-sub {
    font-family: var(--font-display);
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    margin-top: var(--space-2);
    font-weight: 500;
}

.hero-desc {
    color: var(--text-secondary);
    margin-top: var(--space-2);
    max-width: 46ch;
    font-size: 1rem;
}

.hero-cta {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-4);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.85em 1.5em;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    font-weight: 500;
    border: 1px solid transparent;
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--accent);
    color: #080c12;
}

.btn-primary:hover {
    box-shadow: 0 0 0 1px var(--accent), 0 8px 24px -8px var(--accent);
    transform: translateY(-2px);
}

.btn-ghost {
    border-color: var(--border);
    color: var(--text-primary);
    background: var(--surface);
}

.btn-ghost:hover {
    border-color: var(--accent-2);
    color: var(--accent-2);
    transform: translateY(-2px);
}

/* terminal window */
.terminal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-soft);
    background: var(--surface-2);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.r {
    background: #e96874;
}

.terminal-dot.y {
    background: #e6a94a;
}

.terminal-dot.g {
    background: #3aa8a1;
}

.terminal-title {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

.terminal-body {
    padding: var(--space-3);
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--text-secondary);
    min-height: 220px;
}

.terminal-body .prompt {
    color: var(--accent-2);
}

.terminal-body .out {
    color: var(--text-primary);
}

.terminal-body .muted {
    color: var(--text-tertiary);
}

.terminal-line {
    margin-bottom: 0.6em;
    white-space: pre-wrap;
}

.cursor {
    display: inline-block;
    width: 8px;
    height: 1em;
    background: var(--accent-2);
    vertical-align: text-bottom;
    animation: blink 1s steps(1) infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* --------------------------------- about --------------------------------- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-5);
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
    max-width: 58ch;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5em;
    margin-top: var(--space-3);
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 5px 11px;
    border-radius: 999px;
    background: var(--surface);
    transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.tag:hover {
    border-color: var(--accent-2);
    color: var(--accent-2);
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

/* -------------------------------- projects -------------------------------- */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-3);
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-soft), transparent 55%);
    opacity: 0;
    transition: opacity 0.3s var(--ease);
    pointer-events: none;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--border, #333);
    box-shadow: 0 24px 40px -24px rgba(0, 0, 0, 0.55);
}

.project-card:hover::before {
    opacity: 1;
}

.project-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-2);
}

.project-name {
    font-size: 1.12rem;
}

.project-index {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.92rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4em;
}

.project-tags .tag {
    font-size: 0.7rem;
    padding: 3px 9px;
}

.project-links {
    display: flex;
    gap: var(--space-2);
    margin-top: 0.25em;
}

.project-link {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent-2);
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s var(--ease);
}

.project-link:hover {
    border-color: var(--accent-2);
}

/* --------------------------------- skills --------------------------------- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
}

.skill-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

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

.skill-cat {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--accent-2);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
    display: block;
}

.skill-list li {
    padding: 6px 0;
    color: var(--text-primary);
    font-size: 0.92rem;
    border-top: 1px solid var(--border-soft);
}

.skill-list li:first-child {
    border-top: none;
}

/* --------------------------------- stats --------------------------------- */
.stats-wrap {
    display: flex;
    justify-content: center;
}

.stats-card {
    font-family: var(--font-mono);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    width: 100%;
    max-width: 460px;
}

.stats-title {
    font-size: 0.78rem;
    color: var(--accent-2);
    letter-spacing: 0.08em;
    padding-bottom: var(--space-2);
    margin-bottom: var(--space-2);
    border-bottom: 1px dashed var(--border);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 7px 0;
    font-size: 0.9rem;
}

.stat-row .k {
    color: var(--text-secondary);
}

.stat-row .v {
    color: var(--text-primary);
    font-weight: 500;
}

.stat-row .v.building {
    color: var(--warn);
}

/* --------------------------------- contact --------------------------------- */
.contact-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact-card::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-soft), transparent 65%);
    top: -220px;
    right: -180px;
    pointer-events: none;
}

.contact-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin-bottom: var(--space-2);
}

.contact-desc {
    color: var(--text-secondary);
    max-width: 44ch;
    margin: 0 auto var(--space-4);
}

.contact-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.6em;
    padding: 0.75em 1.4em;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: var(--bg-soft);
    transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), color 0.2s var(--ease);
}

.contact-link:hover {
    border-color: var(--accent-2);
    color: var(--accent-2);
    transform: translateY(-2px);
}

/* --------------------------------- footer --------------------------------- */
.footer {
    border-top: 1px solid var(--border-soft);
    padding: var(--space-4) 0 var(--space-5);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.footer-copy {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-tag {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: var(--space-3);
}

.footer-links a {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: color 0.2s var(--ease);
}

.footer-links a:hover {
    color: var(--accent-2);
}

.footer-exit {
    font-family: var(--font-mono);
    color: var(--text-tertiary);
    font-size: 0.8rem;
    margin-top: var(--space-3);
}

/* -------------------------------- reveal on scroll -------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* ----------------------------------- 404 ----------------------------------- */
.error-page {
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3);
}

.error-frame {
    width: 100%;
    max-width: 560px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.7);
}

.error-body {
    padding: var(--space-5) var(--space-4);
    text-align: center;
}

.error-code {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 4.5rem);
    color: var(--accent);
    line-height: 1;
    text-shadow: 0 0 40px var(--accent-soft);
}

.error-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    color: var(--text-tertiary);
    margin-top: var(--space-1);
}

.error-terminal {
    margin-top: var(--space-4);
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.86rem;
    background: var(--bg-soft);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-3);
    color: var(--text-secondary);
}

.error-terminal .prompt {
    color: var(--accent-2);
}

.error-terminal .line {
    margin-bottom: 0.5em;
}

.error-terminal .line:last-child {
    margin-bottom: 0;
}

.error-cta {
    margin-top: var(--space-4);
}

/* ------------------------------------ responsive ------------------------------------ */
@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

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

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

@media (max-width: 720px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    section {
        padding: var(--space-5) 0;
    }
}

@media (max-width: 520px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .status-pill span.label {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}