/* =============================================
   TOKENS
   ============================================= */
:root {
  --color-bg:         #0d0d0d;
  --color-surface:    #141414;
  --color-surface-2:  #1a1a1a;
  --color-border:     #2a2a2a;
  --color-accent:     #00f0ff;
  --color-accent-dim: rgba(0, 240, 255, 0.10);
  --color-accent-glow:rgba(0, 240, 255, 0.20);
  --color-text:       #e8e8e8;
  --color-text-muted: #888888;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --container-max:      1100px;
  --container-max-wide: 1440px;
  --card-radius:   10px;
  --nav-height:    64px;
  --transition:    0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* =============================================
   UTILITIES
   ============================================= */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--wide {
  max-width: var(--container-max-wide);
  margin: 0 auto;
  padding: 0 2rem;
}

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

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition);
  border: 1px solid transparent;
}

.btn--outline {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background: var(--color-accent-dim);
  box-shadow: 0 0 16px var(--color-accent-glow);
  outline: none;
}

.btn--sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

.btn--accent {
  background: var(--color-accent);
  color: #000;
  border-color: var(--color-accent);
  font-weight: 600;
}

.btn--accent:hover,
.btn--accent:focus-visible {
  background: #33f4ff;
  border-color: #33f4ff;
  box-shadow: 0 0 16px var(--color-accent-glow);
  outline: none;
}

/* =============================================
   TAGS
   ============================================= */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: var(--color-accent-dim);
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.tag--category {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* =============================================
   NAV
   ============================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-accent);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* Hamburger open state */
.nav__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Grid texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0px, rgba(255,255,255,0.025) 1px, transparent 1px, transparent 60px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.025) 0px, rgba(255,255,255,0.025) 1px, transparent 1px, transparent 60px);
  pointer-events: none;
  z-index: 0;
}

/* Animated glow */
.hero__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 40%, rgba(0, 240, 255, 0.07), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .hero__bg {
    animation: heroPulse 8s ease-in-out infinite alternate;
  }
}

@keyframes heroPulse {
  from { background: radial-gradient(ellipse 60% 50% at 48% 42%, rgba(0, 240, 255, 0.07), transparent 70%); }
  to   { background: radial-gradient(ellipse 70% 55% at 52% 38%, rgba(0, 240, 255, 0.12), transparent 70%); }
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 3rem 0;
}

.hero__eyebrow {
  font-size: 1rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 7rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.hero__tagline {
  max-width: 520px;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 2.25rem;
}

/* =============================================
   SECTIONS (shared)
   ============================================= */
.section {
  padding: 6rem 0;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section__sub {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 2.5rem;
}

/* =============================================
   PROJECTS
   ============================================= */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 24px var(--color-accent-glow);
  transform: translateY(-3px);
}

/* Cover image / placeholder */
.card__cover {
  display: block;
  aspect-ratio: 16 / 9;
  width: 100%;
  transition: filter var(--transition);
}

.card:hover .card__cover {
  filter: brightness(1.15);
}

.card__cover--1 {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
}
.card__cover--2 {
  background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
}
.card__cover--3 {
  background: linear-gradient(135deg, #0d1b2a, #1b263b, #415a77);
}
.card__cover--4 {
  background: linear-gradient(135deg, #1c0a2e, #2d1650, #5a189a);
}
.card__cover--5 {
  background: linear-gradient(135deg, #0a1628, #0d2137, #003459);
}
.card__cover--6 {
  background: linear-gradient(135deg, #0a1f0a, #1a3a1a, #2d6a2d);
}

.card__body {
  padding: 1.25rem;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card__title a {
  color: inherit;
  transition: color var(--transition);
}

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

.card__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.card__links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* =============================================
   PROJECTS (landing page)
   ============================================= */
.projects-cta {
  border-top: 1px solid var(--color-border);
}

.featured__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.featured__grid .card[hidden] {
  display: none;
}

.projects-cta__footer {
  padding-top: 0.5rem;
}

/* =============================================
   PROJECTS PAGE — filters
   ============================================= */
.projects-page__filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  letter-spacing: 0.04em;
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.filter-btn.active {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.projects-page__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.projects-page__grid .card[hidden] {
  display: none;
}

.page-header {
    padding: calc(var(--nav-height) + 3rem) 0 3rem;
    border-bottom: 1px solid var(--color-border);
    background-image: url("..\projects\InputToAction\TitleCardGif.gif");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.page-header__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  transition: color var(--transition);
}

.page-header__back:hover {
  color: var(--color-accent);
}

/* =============================================
   ABOUT
   ============================================= */
.about {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about__inner {
  display: flex;
  align-items: flex-start;
  gap: 4rem;
}

.about__text {
  flex: 1;
}

.about__bio {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-size: 0.975rem;
}

.about__skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.about__photo {
  flex-shrink: 0;
}

.about__avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-surface-2), var(--color-border));
  border: 2px solid var(--color-accent);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

/* =============================================
   CONTACT
   ============================================= */
.contact__inner {
  text-align: center;
}

.contact__inner .section__title,
.contact__inner .section__sub {
  text-align: center;
}

.contact__links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.contact__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: color var(--transition), transform var(--transition);
}

.contact__link i {
  font-size: 1.75rem;
}

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

/* =============================================
   PROJECT DETAIL PAGE
   ============================================= */
.project-hero {
  padding: calc(var(--nav-height) + 3rem) 0 3rem;
  border-bottom: 1px solid var(--color-border);
}

.project-hero--cover {
  background-size: cover;
  background-position: center;
  position: relative;
}
.project-hero--cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13,13,13,0.65), rgba(13,13,13,0.92));
  pointer-events: none;
}
.project-hero--cover > .container {
  position: relative;
  z-index: 1;
}

.project-video {
  padding: 2rem 0;
  border-bottom: 1px solid var(--color-border);
}
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
}
.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.project-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  transition: color var(--transition);
}

.project-hero__back:hover {
  color: var(--color-accent);
}

.project-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.project-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.project-hero__tagline {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.project-hero__links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Screenshots */
.project-screenshots {
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.project-screenshots__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.screenshot-placeholder {
  aspect-ratio: 16 / 9;
  border-radius: var(--card-radius);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Content sections */
.project-content {
  padding: 3rem 0;
}

.project-content__inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 4rem;
  align-items: start;
}

.project-section {
  margin-bottom: 2.5rem;
}

.project-section__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.project-section__text {
  color: var(--color-text-muted);
  line-height: 1.8;
  font-size: 0.975rem;
}

.project-section__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.project-section__list li {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.6;
}

.project-section__list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* Sidebar */
.project-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 1.5rem;
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
}

.sidebar-group {
  margin-bottom: 1.5rem;
}

.sidebar-group:last-child {
  margin-bottom: 0;
}

.sidebar-group__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.sidebar-group__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.sidebar-group__value {
  font-size: 0.9rem;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .project-content__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .project-sidebar {
    position: static;
    order: -1;
  }
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  /* Nav mobile */
  .nav__hamburger {
    display: flex;
  }

  .nav__links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(13, 13, 13, 0.97);
    border-bottom: 1px solid var(--color-border);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
  }

  .nav__links.open {
    max-height: 300px;
    padding: 1rem 0;
  }

  .nav__link {
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }

  /* About single column */
  .about__inner {
    flex-direction: column-reverse;
    gap: 2rem;
    align-items: center;
  }

  .about__photo {
    align-self: center;
  }

  .about__avatar {
    width: 140px;
    height: 140px;
  }
}

@media (max-width: 480px) {
  .hero__content {
    padding: 3rem 0;
  }

  .section {
    padding: 4rem 0;
  }
}