/* ================================================
   PORTFOLIO — EWEN EVIN
   Design System: Dark Minimal + Indigo Accent
   Fonts: Archivo (headings) + Space Grotesk (body)
   ================================================ */

/* ---- VARIABLES ---- */
:root {
    /* Colors */
    --bg: #09090b;
    --bg-surface: #111113;
    --bg-card: #18181b;
    --bg-card-hover: #1f1f23;
    --border: #27272a;
    --border-light: #3f3f46;

    --text: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --accent-glow-strong: rgba(99, 102, 241, 0.3);

    --success: #22c55e;
    --warning: #f59e0b;

    /* Typography */
    --font-heading: 'Archivo', system-ui, sans-serif;
    --font-body: 'Space Grotesk', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --section-gap: 120px;
    --container-width: 1200px;
    --nav-height: 72px;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* ---- UTILITIES ---- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.hide-mobile {
    display: inline;
}

/* ---- LOADER ---- */
.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s var(--ease), visibility 0.5s;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.loader__line {
    width: 120px;
    height: 2px;
    background: var(--border);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.loader__line::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 40%;
    background: var(--accent);
    border-radius: 2px;
    animation: loader-slide 1s var(--ease) infinite;
}

@keyframes loader-slide {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

.loader__text {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* ---- CUSTOM CURSOR ---- */
.cursor, .cursor-follower {
    display: none;
}

@media (hover: hover) and (pointer: fine) {
    .cursor {
        display: block;
        position: fixed;
        width: 8px;
        height: 8px;
        background: var(--accent);
        border-radius: 50%;
        pointer-events: none;
        z-index: 10001;
        transition: transform 0.15s var(--ease);
        mix-blend-mode: difference;
    }

    .cursor-follower {
        display: block;
        position: fixed;
        width: 36px;
        height: 36px;
        border: 1.5px solid var(--accent-light);
        border-radius: 50%;
        pointer-events: none;
        z-index: 10000;
        transition: transform 0.3s var(--ease), width 0.3s var(--ease), height 0.3s var(--ease), opacity 0.3s;
        opacity: 0.5;
    }

    .cursor-follower.hover {
        width: 56px;
        height: 56px;
        opacity: 0.3;
    }
}

/* ---- NAVIGATION ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s var(--ease);
}

.nav.scrolled {
    background: rgba(9, 9, 11, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.nav__container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 2px;
    cursor: pointer;
}

.nav__logo-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -1px;
}

.nav__logo-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    margin-top: 12px;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: color 0.2s var(--ease), background 0.2s var(--ease);
    cursor: pointer;
}

.nav__link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.nav__link--cta {
    color: var(--text);
    background: var(--accent);
    font-weight: 600;
}

.nav__link--cta:hover {
    background: var(--accent-light);
}

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
    cursor: pointer;
}

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

.nav__burger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav__burger.active span:nth-child(2) {
    opacity: 0;
}

.nav__burger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ---- HERO ---- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero__bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero__grid {
    position: absolute;
    inset: -50%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    transform: perspective(500px) rotateX(60deg);
    transform-origin: center top;
}

.hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
}

.hero__glow--1 {
    width: 600px;
    height: 600px;
    background: var(--accent);
    top: -200px;
    right: -100px;
    opacity: 0.08;
}

.hero__glow--2 {
    width: 400px;
    height: 400px;
    background: #8b5cf6;
    bottom: -100px;
    left: -100px;
    opacity: 0.06;
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(56px, 10vw, 96px);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -3px;
    margin-bottom: 24px;
}

.hero__title-line {
    display: block;
}

.hero__title-line--accent {
    color: var(--accent);
}

.hero__title-dot {
    color: var(--accent-light);
}

.hero__subtitle {
    font-family: var(--font-heading);
    font-size: clamp(18px, 3vw, 24px);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.hero__description {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.hero__socials {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.hero__social {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 18px;
    transition: all 0.2s var(--ease);
    cursor: pointer;
}

.hero__social:hover {
    color: var(--text);
    border-color: var(--accent);
    background: var(--accent-glow);
}

.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero__scroll span {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.hero__scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scroll-line 2s var(--ease) infinite;
}

@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    50.1% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all 0.25s var(--ease);
    cursor: pointer;
}

.btn--primary {
    background: var(--accent);
    color: white;
}

.btn--primary:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.btn--outline {
    border: 1px solid var(--border);
    color: var(--text);
    background: transparent;
}

.btn--outline:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: var(--accent-glow);
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ---- SECTION ---- */
.section {
    padding: var(--section-gap) 0;
    position: relative;
}

.section__header {
    margin-bottom: 64px;
}

.section__tag {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    display: block;
    margin-bottom: 12px;
}

.section__title {
    font-family: var(--font-heading);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.1;
}

.section__subtitle {
    font-size: 16px;
    color: var(--text-muted);
    margin-top: 12px;
}

/* ---- ABOUT ---- */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 80px;
    align-items: center;
}

.about__image-wrapper {
    position: relative;
}

.about__image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 3/4;
    background: var(--bg-card);
}

.about__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about__image-accent {
    position: absolute;
    top: 24px;
    left: 24px;
    right: -12px;
    bottom: -12px;
    border: 2px solid var(--accent);
    border-radius: var(--radius-lg);
    opacity: 0.2;
    z-index: -1;
}

.about__headline {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.3;
    margin-bottom: 20px;
}

.about__text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.about__text strong {
    color: var(--accent-light);
    font-weight: 600;
}

.about__stats {
    display: flex;
    gap: 40px;
    margin: 36px 0;
    padding: 28px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.about__stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.about__stat-number {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -1px;
}

.about__stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ---- SKILLS ---- */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all 0.3s var(--ease);
    cursor: default;
}

.skill-card:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.skill-card__icon {
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 16px;
}

.skill-card__name {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
}

.skill-card__level {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 100px;
    display: inline-block;
    margin-bottom: 16px;
}

.skill-card__level--expert {
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
}

.skill-card__level--advanced {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-light);
}

.skill-card__level--inter {
    background: rgba(245, 158, 11, 0.1);
    color: #fbbf24;
}

.skill-card__level--beginner {
    background: rgba(161, 161, 170, 0.1);
    color: var(--text-muted);
}

.skill-card__bar {
    height: 4px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.skill-card__fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    width: 0;
    transition: width 1s var(--ease);
}

/* ---- PROJECTS ---- */
.projects__filters {
    display: flex;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.projects__filter {
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 100px;
    transition: all 0.2s var(--ease);
    cursor: pointer;
}

.projects__filter:hover {
    color: var(--text);
    border-color: var(--border-light);
}

.projects__filter.active {
    color: white;
    background: var(--accent);
    border-color: var(--accent);
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.35s var(--ease);
    cursor: pointer;
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-card.hidden {
    display: none;
}

.project-card__image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
    background: var(--bg-surface);
}

.project-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease);
}

.project-card:hover .project-card__image img {
    transform: scale(1.05);
}

.project-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(9, 9, 11, 0.9), transparent 50%);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s var(--ease);
}

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

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.project-card__tag {
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.2);
    backdrop-filter: blur(8px);
    color: var(--accent-light);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
}

.project-card__body {
    padding: 24px;
}

.project-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.project-card__type {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-card__status {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 100px;
}

.project-card__status--progress {
    background: rgba(245, 158, 11, 0.1);
    color: #fbbf24;
}

.project-card__date {
    font-size: 12px;
    color: var(--text-muted);
}

.project-card__title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.project-card__desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- EXPERIENCE ---- */
.experience__tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 4px;
    width: fit-content;
    margin-bottom: 48px;
}

.experience__tab {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all 0.2s var(--ease);
    cursor: pointer;
}

.experience__tab.active {
    background: var(--accent);
    color: white;
}

.experience__tab:not(.active):hover {
    color: var(--text);
}

.timeline {
    position: relative;
    padding-left: 40px;
    display: none;
}

.timeline[data-active="true"] {
    display: block;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border);
}

.timeline__item {
    position: relative;
    padding-bottom: 40px;
}

.timeline__item:last-child {
    padding-bottom: 0;
}

.timeline__dot {
    position: absolute;
    left: -40px;
    top: 8px;
    width: 16px;
    height: 16px;
    background: var(--bg);
    border: 2px solid var(--accent);
    border-radius: 50%;
    z-index: 1;
}

.timeline__item:first-child .timeline__dot {
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.timeline__card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: border-color 0.3s var(--ease);
}

.timeline__card:hover {
    border-color: var(--border-light);
}

.timeline__date {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent);
    font-weight: 500;
    display: block;
    margin-bottom: 8px;
}

.timeline__title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline__company {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
    display: block;
    margin-bottom: 12px;
}

.timeline__desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- CERTIFICATIONS ---- */
.certifications__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: all 0.3s var(--ease);
    cursor: default;
}

.cert-card:hover {
    border-color: var(--border-light);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.cert-card__icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-card__icon img {
    max-width: 48px;
    max-height: 48px;
    object-fit: contain;
}

.cert-card__icon i {
    font-size: 32px;
    color: var(--accent);
}

.cert-card__name {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 6px;
}

.cert-card__score {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

/* ---- CONTACT ---- */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
}

.contact__item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
}

.contact__item-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    color: var(--accent-light);
}

.contact__item-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.contact__item-value {
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
}

.contact__item-link {
    transition: color 0.2s var(--ease);
    cursor: pointer;
}

.contact__item-link:hover {
    color: var(--accent-light);
}

.contact__socials {
    display: flex;
    gap: 12px;
    margin-top: 36px;
}

.contact__social {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 20px;
    transition: all 0.2s var(--ease);
    cursor: pointer;
}

.contact__social:hover {
    color: var(--accent-light);
    border-color: var(--accent);
    background: var(--accent-glow);
}

/* ---- FORM ---- */
.contact__form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.form__group {
    position: relative;
    margin-bottom: 24px;
}

.form__input {
    width: 100%;
    padding: 16px 18px;
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--text);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    transition: all 0.2s var(--ease);
}

.form__input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form__label {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 15px;
    color: var(--text-muted);
    pointer-events: none;
    transition: all 0.2s var(--ease);
    background: transparent;
}

.form__textarea ~ .form__label {
    top: 18px;
    transform: none;
}

.form__input:focus ~ .form__label,
.form__input:not(:placeholder-shown) ~ .form__label {
    top: -8px;
    left: 14px;
    transform: none;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: var(--bg-card);
    padding: 0 6px;
}

.form__textarea:focus ~ .form__label,
.form__textarea:not(:placeholder-shown) ~ .form__label {
    top: -8px;
    left: 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: var(--bg-card);
    padding: 0 6px;
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

.form__feedback {
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

.form__feedback.success {
    color: var(--success);
}

.form__feedback.error {
    color: #ef4444;
}

/* ---- FOOTER ---- */
.footer {
    padding: 32px 0;
    border-top: 1px solid var(--border);
}

.footer__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer__logo {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -1px;
}

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

.footer__copy {
    font-size: 13px;
    color: var(--text-muted);
}

.footer__link {
    font-size: 13px;
    color: var(--text-muted);
    transition: color 0.2s var(--ease);
    cursor: pointer;
}

.footer__link:hover {
    color: var(--text);
}

/* ---- BACK TO TOP ---- */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all 0.3s var(--ease);
    z-index: 100;
    cursor: pointer;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    color: var(--accent-light);
    border-color: var(--accent);
    background: var(--accent-glow);
}

/* ---- ANIMATIONS ---- */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

[data-animate="fade-right"] {
    transform: translateX(-30px);
}

[data-animate="fade-left"] {
    transform: translateX(30px);
}

[data-animate].animated {
    opacity: 1;
    transform: translateX(0) translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    [data-animate] {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .hero__scroll-line,
    .loader__line::after,
    .hero__badge-dot {
        animation: none;
    }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    :root {
        --section-gap: 96px;
    }

    .about__grid {
        gap: 48px;
    }

    .projects__grid {
        gap: 20px;
    }

    .contact__grid {
        gap: 48px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-gap: 80px;
    }

    .hide-mobile {
        display: none;
    }

    /* Nav mobile */
    .nav__links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: var(--bg-surface);
        border-left: 1px solid var(--border);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: right 0.35s var(--ease);
        z-index: 999;
    }

    .nav__links.open {
        right: 0;
    }

    .nav__link {
        font-size: 18px;
        width: 100%;
        padding: 14px 16px;
    }

    .nav__burger {
        display: flex;
        z-index: 1001;
    }

    /* Hero mobile */
    .hero {
        padding: 100px 20px 80px;
    }

    .hero__title {
        letter-spacing: -2px;
    }

    .hero__actions {
        flex-direction: column;
    }

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

    /* About mobile */
    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about__image-wrapper {
        max-width: 300px;
        margin: 0 auto;
    }

    .about__stats {
        gap: 24px;
    }

    .about__stat-number {
        font-size: 28px;
    }

    /* Skills mobile */
    .skills__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .skill-card {
        padding: 20px;
    }

    .skill-card__icon {
        font-size: 24px;
        margin-bottom: 12px;
    }

    /* Projects mobile */
    .projects__grid {
        grid-template-columns: 1fr;
    }

    /* Contact mobile */
    .contact__grid {
        grid-template-columns: 1fr;
    }

    .contact__form {
        padding: 24px;
    }

    /* Footer mobile */
    .footer__content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer__left {
        flex-direction: column;
        gap: 8px;
    }

    /* Timeline mobile */
    .timeline {
        padding-left: 32px;
    }

    .timeline__dot {
        left: -32px;
    }

    .timeline__card {
        padding: 20px;
    }

    .experience__tabs {
        width: 100%;
    }

    .experience__tab {
        flex: 1;
        text-align: center;
    }

    /* Certifications mobile */
    .certifications__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .skills__grid {
        grid-template-columns: 1fr;
    }

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

    .about__stats {
        flex-direction: column;
        gap: 16px;
    }
}

/* ---- MOBILE OVERLAY ---- */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}