/* ============================================================
   MUON WORKS — Design System
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=Inter:wght@400;500&family=JetBrains+Mono:wght@400&display=swap');

/* ── Custom Properties ────────────────────────────────────── */
:root {
  /* Colors */
  --c-bg:        #1E1E28;
  --c-surface:   #272733;
  --c-border:    #38384A;
  --c-text:      #F0F0F5;
  --c-muted:     #9090A8;
  --c-accent:    #6EE7B7;
  --c-btn-text:  #111111;

  /* Typography */
  --f-display: 'Space Grotesk', sans-serif;
  --f-body:    'Inter', sans-serif;
  --f-mono:    'JetBrains Mono', monospace;

  /* Spacing scale */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-w:         1200px;
  --nav-h:         72px;
  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --radius-pill:   9999px;

  /* Transitions */
  --t-fast:   150ms ease;
  --t-base:   250ms ease;
  --t-slow:   400ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font: inherit;
}

/* ── Layout Utilities ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: var(--space-24);
}

/* ── Scroll Reveal ────────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* ── Navigation ───────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--t-base), border-bottom var(--t-base);
}

.nav.is-scrolled {
  background: rgba(30, 30, 40, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text);
  line-height: 1;
}

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

.nav__list {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-family: var(--f-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--c-muted);
  transition: color var(--t-fast);
  position: relative;
}

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

.nav__link--active {
  color: var(--c-text);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--c-accent);
  border-radius: var(--radius-pill);
}

.nav__link--cta {
  color: var(--c-btn-text) !important;
  background: var(--c-accent);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-pill);
  font-weight: 500;
  transition: background var(--t-fast), transform var(--t-fast);
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  background: #a7f3d0;
  transform: translateY(-1px);
}

/* hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-base);
  transform-origin: center;
}

.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* mobile menu */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-8) var(--space-6);
  flex-direction: column;
  gap: var(--space-6);
  z-index: 99;
}

.nav__mobile.is-open {
  display: flex;
}

.nav__mobile-link {
  font-family: var(--f-body);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--c-muted);
  transition: color var(--t-fast);
  padding-block: var(--space-2);
  border-bottom: 1px solid var(--c-border);
}

.nav__mobile-link:last-child {
  border-bottom: none;
}

.nav__mobile-link:hover,
.nav__mobile-link--active {
  color: var(--c-accent);
}

/* desktop nav visible */
@media (min-width: 960px) {
  .nav__list {
    display: flex;
  }

  .nav__hamburger {
    display: none;
  }
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--f-body);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-pill);
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  cursor: pointer;
  text-decoration: none;
}

.btn--primary {
  background: var(--c-accent);
  color: var(--c-btn-text);
  border: 2px solid var(--c-accent);
}

.btn--primary:hover {
  background: #a7f3d0;
  border-color: #a7f3d0;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(110, 231, 183, 0.25);
}

.btn--ghost {
  background: transparent;
  color: var(--c-text);
  border: 2px solid var(--c-border);
}

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

/* ── Eyebrow / Labels ─────────────────────────────────────── */
.eyebrow {
  font-family: var(--f-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
}

/* ── Page Header ──────────────────────────────────────────── */
.page-header {
  padding-block: var(--space-24) var(--space-16);
  border-bottom: 1px solid var(--c-border);
}

.page-header__eyebrow {
  margin-bottom: var(--space-4);
}

.page-header__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-5);
}

.page-header__desc {
  font-size: 1.125rem;
  color: var(--c-muted);
  max-width: 52ch;
  line-height: 1.7;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: var(--space-20);
  position: relative;
  overflow: hidden;
}

/* subtle grid bg */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(110, 231, 183, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 231, 183, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* accent glow */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(110, 231, 183, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.hero__eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

.hero__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(4rem, 12vw, 9rem);
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin-bottom: var(--space-8);
  color: var(--c-text);
}

.hero__title em {
  font-style: normal;
  color: var(--c-accent);
}

.hero__tagline {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  color: var(--c-muted);
  max-width: 52ch;
  line-height: 1.65;
  margin-bottom: var(--space-10);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  border-top: 1px solid var(--c-border);
}

.about__grid {
  display: grid;
  gap: var(--space-12);
}

.about__label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.about__label-line {
  flex-shrink: 0;
  width: 2px;
  height: 48px;
  background: var(--c-accent);
  margin-top: 4px;
}

.about__label-text {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about__heading {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.about__body {
  font-size: 1.0625rem;
  color: var(--c-muted);
  line-height: 1.75;
  max-width: 58ch;
}

@media (min-width: 960px) {
  .about__grid {
    grid-template-columns: 220px 1fr;
    gap: var(--space-16);
  }
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
  border-top: 1px solid var(--c-border);
}

.services__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.services__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  letter-spacing: -0.02em;
}

.services__grid {
  display: grid;
  gap: var(--space-4);
}

.service-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  transition: border-color var(--t-base), transform var(--t-base);
}

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

.service-card__num {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--c-accent);
  margin-bottom: var(--space-5);
  opacity: 0.8;
}

.service-card__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
}

.service-card__desc {
  font-size: 0.9375rem;
  color: var(--c-muted);
  line-height: 1.65;
}

@media (min-width: 640px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================================
   PORTFOLIO
   ============================================================ */
.portfolio-grid {
  padding-block: var(--space-16) var(--space-24);
}

.portfolio-grid__grid {
  display: grid;
  gap: var(--space-6);
}

.project-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: border-color var(--t-base), transform var(--t-base), box-shadow var(--t-base);
}

.project-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.project-card__type {
  font-size: 0.75rem;
}

.project-card__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.project-card__desc {
  font-size: 0.9375rem;
  color: var(--c-muted);
  line-height: 1.7;
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  color: var(--c-accent);
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.2);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  letter-spacing: 0.02em;
}

.project-card__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--t-fast), opacity var(--t-fast);
  margin-top: auto;
  width: fit-content;
}

.project-card__link:hover {
  gap: var(--space-3);
  opacity: 0.8;
}

@media (min-width: 960px) {
  .portfolio-grid__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-layout {
  padding-block: var(--space-16) var(--space-24);
}

.contact-layout__grid {
  display: grid;
  gap: var(--space-12);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.contact-info__heading {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.contact-info__body {
  font-size: 1rem;
  color: var(--c-muted);
  line-height: 1.7;
  max-width: 40ch;
}

.contact-info__email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--c-accent);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: opacity var(--t-fast);
}

.contact-info__email:hover {
  opacity: 0.75;
}

.contact-info__divider {
  width: 40px;
  height: 2px;
  background: var(--c-border);
  border-radius: 2px;
}

/* Form */
.contact-form {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-text);
  display: flex;
  gap: var(--space-1);
}

.form-label__opt {
  color: var(--c-muted);
  font-weight: 400;
}

.form-input,
.form-textarea {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  color: var(--c-text);
  font-size: 0.9375rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--c-muted);
  opacity: 0.6;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(110, 231, 183, 0.12);
}

.form-input.is-invalid,
.form-textarea.is-invalid {
  border-color: #f87171;
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-error {
  font-size: 0.8125rem;
  color: #f87171;
  display: none;
}

.form-error.is-visible {
  display: block;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-submit {
  align-self: flex-start;
  padding: var(--space-3) var(--space-10);
  font-size: 0.9375rem;
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.form-success {
  display: none;
  background: rgba(110, 231, 183, 0.08);
  border: 1px solid rgba(110, 231, 183, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  color: var(--c-accent);
  font-size: 0.9375rem;
  font-weight: 500;
  gap: var(--space-3);
  align-items: flex-start;
  line-height: 1.55;
}

.form-success.is-visible {
  display: flex;
}

@media (min-width: 960px) {
  .contact-layout__grid {
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-20);
    align-items: start;
  }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--c-border);
  padding-block: var(--space-10);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer__logo {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text);
}

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

.footer__copy {
  font-size: 0.8125rem;
  color: var(--c-muted);
}

/* Portfolio Feature */

.portfolio-feature {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: var(--space-12);
}

.portfolio-feature__image-link {
  display: block;
}

.portfolio-feature__image {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 1px solid var(--c-border);
}

.portfolio-feature__content {
  padding: var(--space-8) var(--space-8) var(--space-10);
}

.portfolio-feature__title {
  font-family: var(--f-display);
  font-size: 2rem;
  font-weight: 700;
  margin: var(--space-3) 0 var(--space-2);
}

.portfolio-feature__subtitle {
  font-size: 1.125rem;
  color: var(--c-muted);
  margin-bottom: var(--space-4);
}

.portfolio-feature__desc {
  color: var(--c-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.portfolio-feature__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-8);
}

.portfolio-feature__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .portfolio-feature__content {
    padding: var(--space-10) var(--space-12) var(--space-12);
  }
}