:root {
    --bg: #0b1120;
    --surface: #111b2e;
    --surface-light: #17243a;
    --text: #f1f5f9;
    --muted: #9aabc2;
    --accent: #38bdf8;
    --accent-two: #818cf8;
    --border: rgba(148, 163, 184, 0.16);
    --radius: 18px;
    --container: 1120px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
}

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 5px;
}

.container {
    width: min(var(--container), calc(100% - 40px));
    margin-inline: auto;
}

.section {
    padding: 100px 0;
}

.section-alt {
    background: rgba(17, 27, 46, 0.55);
}

.gradient-text {
    background: linear-gradient(110deg, var(--accent), var(--accent-two));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.eyebrow {
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.muted,
.small-note {
    color: var(--muted);
}

.small-note {
    text-align: center;
    font-size: 0.85rem;
    margin-top: 28px;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    margin-right: 7px;
    box-shadow: 0 0 12px rgba(74, 222, 128, 0.45);
}

/* Navigation */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 17, 32, 0.88);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(18px);
}

.navbar {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    white-space: nowrap;
}

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

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 27px;
}

.nav-links a {
    color: var(--muted);
    font-size: 0.88rem;
    transition: color 0.2s ease;
}

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

.nav-links .nav-contact {
    color: var(--bg);
    background: var(--accent);
    border-radius: 9px;
    padding: 10px 15px;
    font-weight: 700;
}

.nav-links .nav-contact:hover {
    color: var(--bg);
    background: #7dd3fc;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}

.menu-toggle span {
    display: block;
    width: 19px;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
}

/* Hero */

.hero {
    min-height: 650px;
    display: flex;
    align-items: center;
    position: relative;
    background:
        radial-gradient(ellipse at 10% 20%, rgba(56, 189, 248, 0.09), transparent 35%),
        radial-gradient(ellipse at 90% 70%, rgba(129, 140, 248, 0.10), transparent 35%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 55px;
}

.hero-text h1 {
    font-size: clamp(2.7rem, 5.5vw, 4.6rem);
    line-height: 1.12;
    letter-spacing: -2.5px;
    margin-bottom: 20px;
}

.hero-text h2 {
    font-size: clamp(1.15rem, 2vw, 1.55rem);
    font-weight: 500;
    color: #cbd5e1;
    margin-bottom: 18px;
}

.hero-description {
    color: var(--muted);
    max-width: 560px;
    font-size: 1.02rem;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.button {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 700;
    transition: transform 0.2s, background 0.2s;
}

.button:hover {
    transform: translateY(-3px);
}

.button-primary {
    color: #07111f;
    background: var(--accent);
}

.button-primary:hover {
    background: #7dd3fc;
}

.button-secondary {
    border: 1px solid var(--border);
    background: var(--surface);
}

.button-secondary:hover {
    background: var(--surface-light);
}

.social-links {
    display: flex;
    gap: 25px;
    margin-top: 32px;
}

.social-links a {
    color: var(--muted);
    font-size: 0.9rem;
}

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

.hero-visual {
    min-height: 370px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.orbit {
    position: absolute;
    border: 1px solid rgba(56, 189, 248, 0.15);
    border-radius: 50%;
}

.orbit-one {
    width: 350px;
    height: 350px;
}

.orbit-two {
    width: 275px;
    height: 275px;
    border-color: rgba(129, 140, 248, 0.22);
}

.code-card {
    z-index: 1;
    width: 100%;
    max-width: 420px;
    background: #101a2c;
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.3);
    transform: rotate(-2deg);
}

.code-card-top {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 15px 18px;
    border-bottom: 1px solid var(--border);
}

.code-card-top > span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #fb7185;
}

.code-card-top > span:nth-child(2) {
    background: #fbbf24;
}

.code-card-top > span:nth-child(3) {
    background: #4ade80;
}

.code-card-top small {
    color: var(--muted);
    margin-left: 12px;
}

.code-card pre {
    padding: 24px 20px;
    overflow-x: auto;
    font-size: clamp(0.67rem, 1vw, 0.83rem);
    line-height: 2;
}

.code-purple {
    color: #c4b5fd;
}

.code-green {
    color: #86efac;
}

.code-card-footer {
    padding: 12px 20px;
    color: var(--muted);
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
}

.floating-tag {
    position: absolute;
    z-index: 2;
    padding: 9px 13px;
    border-radius: 10px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    font-size: 0.78rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.tag-top {
    top: 35px;
    right: -8px;
}

.tag-bottom {
    bottom: 35px;
    left: -12px;
}

.scroll-cue {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--muted);
    font-size: 0.8rem;
}

/* Section headings */

.section-heading {
    max-width: 650px;
    margin: 0 auto 50px;
    text-align: center;
}

.section-heading h2,
.contact-container h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -1.4px;
    line-height: 1.2;
    margin-bottom: 15px;
}

.section-heading > p:last-child {
    color: var(--muted);
}

/* About */

.about-grid {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 55px;
    align-items: center;
}

.about-card,
.skill-card,
.project-card,
.timeline-card,
.goal-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.profile-card {
    text-align: center;
    padding: 35px 25px;
}

.profile-symbol {
    width: 95px;
    height: 95px;
    display: grid;
    place-items: center;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0e7490, #6366f1);
    font-size: 2rem;
    font-weight: 800;
    color: white;
}

.profile-card h3 {
    font-size: 1.4rem;
}

.profile-card > p {
    margin-top: 7px;
    font-size: 0.9rem;
}

.profile-divider {
    height: 1px;
    background: var(--border);
    margin: 22px 0;
}

.about-copy h3 {
    font-size: 1.55rem;
    margin-bottom: 16px;
}

.about-copy p {
    color: var(--muted);
    margin-bottom: 16px;
}

.text-link {
    display: inline-block;
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 700;
    margin-top: 8px;
}

.text-link:hover {
    color: #bae6fd;
}

/* Skills */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.skill-card {
    padding: 26px;
    transition: transform 0.2s, border-color 0.2s;
}

.skill-card:hover,
.project-card:hover,
.goal-card:hover {
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.45);
}

.skill-icon {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--surface-light);
    font-size: 1.5rem;
    margin-bottom: 18px;
}

.skill-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.skill-card p {
    color: var(--muted);
    font-size: 0.9rem;
    min-height: 58px;
}

.skill-level,
.project-status,
.timeline-label {
    display: inline-block;
    color: var(--accent);
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.15);
    border-radius: 30px;
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 700;
    margin-top: 18px;
}

/* Projects */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.project-card {
    overflow: hidden;
    transition: transform 0.2s, border-color 0.2s;
}

.project-preview {
    min-height: 215px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.preview-one {
    background: linear-gradient(135deg, #12354d, #202451);
}

.preview-two {
    background: linear-gradient(135deg, #193b39, #1c2850);
}

.preview-three {
    background: linear-gradient(135deg, #30224e, #172c49);
}

.preview-label {
    position: absolute;
    bottom: 14px;
    left: 17px;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.7rem;
    letter-spacing: 1.5px;
}

.mini-browser {
    width: 70%;
    max-width: 230px;
    border-radius: 9px;
    background: #f1f5f9;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
    transform: rotate(-3deg);
}

.mini-browser-bar {
    display: flex;
    gap: 4px;
    padding: 9px;
    background: #dbe4ee;
}

.mini-browser-bar span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #94a3b8;
}

.mini-browser-content {
    padding: 25px 17px;
}

.mini-line {
    width: 85%;
    height: 9px;
    background: #0e7490;
    border-radius: 5px;
    margin-bottom: 10px;
}

.mini-line.short {
    width: 55%;
    height: 6px;
    background: #94a3b8;
}

.mini-button {
    width: 65px;
    height: 17px;
    border-radius: 5px;
    background: #6366f1;
    margin-top: 17px;
}

.app-preview {
    width: 75%;
    max-width: 250px;
    padding: 18px;
    background: #132d35;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.app-preview-label {
    display: block;
    color: #86efac;
    font-size: 0.7rem;
    margin-bottom: 14px;
    letter-spacing: 1px;
}

.app-preview div {
    display: flex;
    gap: 9px;
    color: #4ade80;
    padding: 6px 0;
    font-size: 0.75rem;
}

.app-preview div span {
    color: #d1d5db;
}

.terminal-preview {
    width: 78%;
    padding: 20px;
    background: #101525;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    font-family: monospace;
    font-size: 0.75rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.terminal-preview p {
    color: #86efac;
    margin-bottom: 10px;
}

.terminal-preview .terminal-output {
    color: #a5b4fc;
    padding-left: 14px;
}

.project-body {
    padding: 24px;
}

.project-body .project-status {
    margin-top: 0;
    margin-bottom: 12px;
}

.project-body h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.project-body > p {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 17px;
}

.tag-list span {
    padding: 5px 9px;
    border-radius: 6px;
    background: var(--surface-light);
    color: #cbd5e1;
    font-size: 0.72rem;
}

/* Education */

.timeline {
    max-width: 780px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 9px;
    top: 14px;
    bottom: 14px;
    width: 2px;
    background: linear-gradient(var(--accent), var(--accent-two));
    opacity: 0.5;
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    margin-bottom: 25px;
}

.timeline-marker {
    position: absolute;
    left: 2px;
    top: 25px;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border: 4px solid var(--bg);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.25);
}

.timeline-card {
    padding: 27px;
}

.timeline-label {
    margin: 0 0 12px;
}

.timeline-card h3 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.timeline-card p {
    margin-top: 10px;
}

.timeline-card p:last-child {
    color: var(--muted);
}

/* Goals */

.goals-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.goal-card {
    padding: 30px;
    transition: transform 0.2s, border-color 0.2s;
}

.goal-card > span {
    display: inline-block;
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.goal-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.goal-card p {
    color: var(--muted);
    font-size: 0.92rem;
}

/* Contact */

.contact-container {
    max-width: 760px;
    text-align: center;
}

.contact-container h2 {
    max-width: 650px;
    margin: 0 auto 20px;
}

.contact-description {
    max-width: 580px;
    color: var(--muted);
    margin: 0 auto 35px;
}

.contact-details {
    max-width: 520px;
    margin: 0 auto;
    text-align: left;
    display: grid;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    min-width: 0;
}

.contact-item > span {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--surface-light);
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 700;
}

.contact-item > div {
    min-width: 0;
    flex: 1;
}

.contact-item p {
    font-size: 0.8rem;
}

.contact-item a {
    overflow-wrap: anywhere;
    font-size: 0.9rem;
}

.contact-item a:hover {
    color: var(--accent);
}

.copy-button {
    padding: 7px 11px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--surface-light);
    color: var(--text);
    cursor: pointer;
    font-size: 0.8rem;
}

.copy-button:hover {
    border-color: var(--accent);
}

.contact-note {
    min-height: 26px;
    color: #86efac;
    font-size: 0.85rem;
    margin-top: 12px;
}

/* Footer */

.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
}

.footer-content p {
    color: var(--muted);
    font-size: 0.78rem;
}

.back-to-top {
    color: var(--accent);
    font-size: 0.85rem;
}

/* Responsive layout */

@media (max-width: 950px) {
    .nav-links {
        gap: 15px;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

    .hero-content {
        gap: 30px;
    }

    .hero-visual {
        min-height: 320px;
    }

    .orbit-one {
        width: 290px;
        height: 290px;
    }

    .orbit-two {
        width: 230px;
        height: 230px;
    }

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

@media (max-width: 720px) {
    .section {
        padding: 75px 0;
    }

    .navbar {
        min-height: 68px;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        padding: 20px;
        background: #0b1120;
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
    }

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

    .nav-links a {
        display: block;
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    .nav-links .nav-contact {
        text-align: center;
        margin-top: 7px;
    }

    .hero {
        min-height: auto;
        padding-top: 75px;
        padding-bottom: 70px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .hero-text h1 {
        letter-spacing: -1.5px;
    }

    .hero-visual {
        min-height: 340px;
        margin: 0 8px;
    }

    .tag-top {
        right: 0;
    }

    .tag-bottom {
        left: 0;
    }

    .scroll-cue {
        display: none;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .profile-card {
        max-width: 420px;
        width: 100%;
        margin-inline: auto;
    }

    .section-heading {
        margin-bottom: 35px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        width: calc(100% - 30px);
    }

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

    .hero-text h1 {
        font-size: 2.65rem;
    }

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

    .button {
        width: 100%;
    }

    .hero-visual {
        min-height: 300px;
    }

    .code-card pre {
        padding: 18px 12px;
        font-size: 0.65rem;
    }

    .orbit-one {
        width: 270px;
        height: 270px;
    }

    .orbit-two {
        width: 220px;
        height: 220px;
    }

    .floating-tag {
        font-size: 0.68rem;
    }

    .contact-item {
        gap: 10px;
        padding: 13px;
    }

    .contact-item a {
        font-size: 0.8rem;
    }

    .copy-button {
        padding: 6px 8px;
    }

    .timeline-item {
        padding-left: 30px;
    }

    .timeline-card {
        padding: 20px;
    }
}

/* Respect reduced-motion preferences */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}