/* ==========================================================================
   COMPONENTS — components.css
   All UI components: nav, hero, about, projects, skills, timeline, contact, footer
   ========================================================================== */

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-nav);
  transition:
    background-color var(--t-medium),
    border-bottom var(--t-medium),
    transform var(--t-medium);
}

.nav.is-scrolled {
  background-color: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border);
}

[data-theme="light"] .nav.is-scrolled {
  background-color: rgba(250, 250, 249, 0.85);
}

.nav.is-hidden {
  transform: translateY(-100%);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1.5rem var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.15em;
  color: var(--c-text);
}

.nav__links {
  display: flex;
  gap: 2.5rem;
}

.nav__link {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-3);
  font-weight: var(--fw-medium);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--t-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--c-text);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-medium);
}

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

.nav__link.is-active::after,
.nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ── Nav Toggle (Mobile) ──────────────────────────────────────────────────── */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: calc(var(--z-nav) + 1);
  padding: 4px;
}

.nav__toggle-line {
  width: 20px;
  height: 1px;
  background-color: var(--c-text);
  transition: transform var(--t-medium);
  transform-origin: center;
}

.nav__toggle.is-active .nav__toggle-line:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav__toggle.is-active .nav__toggle-line:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* ==========================================================================
   MOBILE MENU
   ========================================================================== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background-color: var(--c-bg);
  z-index: var(--z-menu);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-medium);
}

.mobile-menu.is-active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

.mobile-menu__link {
  font-size: 2rem;
  font-weight: var(--fw-light);
  letter-spacing: -0.01em;
  color: var(--c-text-2);
  transition: color var(--t-fast);
}

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

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--r-full);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: var(--fw-medium);
  font-family: var(--f-sans);
  cursor: pointer;
  transition: all var(--t-medium);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--c-text);
  color: var(--c-bg);
  border: 1px solid var(--c-text);
}

.btn--primary:hover {
  background-color: transparent;
  color: var(--c-text);
}

.btn--ghost {
  background: transparent;
  color: var(--c-text-2);
  border: 1px solid var(--c-border);
}

.btn--ghost:hover {
  color: var(--c-text);
  border-color: var(--c-border-hover);
}

.btn svg {
  flex-shrink: 0;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 8vh;
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--c-text-4);
  margin-bottom: 2rem;
  font-weight: var(--fw-medium);
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 10px var(--c-accent-dim), 0 0 20px var(--c-accent-dim);
}

.hero__name {
  font-size: var(--fs-display);
  font-weight: var(--fw-bold);
  letter-spacing: -0.04em;
  line-height: 0.9;
  margin-bottom: 2.5rem;
}

.hero__name-line {
  display: block;
  overflow: hidden;
}

.hero__name-line span {
  display: block;
}

.hero__tagline {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--c-text-3);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 3rem;
  font-weight: var(--fw-light);
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Hero Scroll Indicator ────────────────────────────────────────────────── */
.hero__scroll {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.hero__scroll-text {
  font-size: var(--fs-micro);
  letter-spacing: 0.15em;
  color: var(--c-text-4);
  text-transform: uppercase;
  font-weight: var(--fw-medium);
}

.hero__scroll-track {
  width: 1px;
  height: 40px;
  background: var(--c-border);
  position: relative;
  overflow: hidden;
}

.hero__scroll-thumb {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: var(--c-text-2);
  animation: scrollPulse 2.5s infinite var(--ease-smooth);
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about__heading {
  font-size: var(--fs-h1);
  font-weight: var(--fw-semibold);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 2rem;
}

.about__body {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  color: var(--c-text-2);
  line-height: 1.8;
  font-weight: var(--fw-light);
}

/* ── Meta Cards ───────────────────────────────────────────────────────────── */
.meta-card {
  padding: 1.25rem;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  transition: all var(--t-medium);
}

.meta-card:hover {
  border-color: var(--c-border-hover);
  background: var(--c-bg-card-hover);
}

.meta-card__label {
  display: block;
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-4);
  margin-bottom: 0.5rem;
  font-weight: var(--fw-medium);
}

.meta-card__value {
  font-size: var(--fs-sm);
  color: var(--c-text);
  font-weight: var(--fw-regular);
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  margin-right: 0.5rem;
  vertical-align: middle;
  animation: pulse 2s infinite;
}

/* ==========================================================================
   PROJECT CARDS
   ========================================================================== */
.project-card {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all var(--t-medium);
}

.project-card:hover {
  border-color: var(--c-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* ── Featured (large) variant ─────────────────────────────────────────────── */
.project-card--featured {
  grid-template-columns: 1.4fr 1fr;
}

/* ── Visual ───────────────────────────────────────────────────────────────── */
.project-card__visual {
  position: relative;
  overflow: hidden;
  background: var(--c-bg-raised);
}

.project-card--featured .project-card__visual {
  min-height: 350px;
}

.project-card:not(.project-card--featured) .project-card__visual {
  aspect-ratio: 16 / 10;
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  transition: transform var(--t-slow), opacity var(--t-slow);
}

.project-card:hover .project-card__img {
  transform: scale(1.04);
  opacity: 1;
}

.project-card__label {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  padding: 0.35rem 0.75rem;
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  color: var(--c-text-2);
  font-weight: var(--fw-medium);
}

/* ── Info ──────────────────────────────────────────────────────────────────── */
.project-card__info {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-card__type {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-4);
  margin-bottom: 0.75rem;
  font-weight: var(--fw-medium);
}

.project-card__title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.project-card__desc {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-weight: var(--fw-light);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tag {
  font-size: var(--fs-micro);
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  color: var(--c-text-3);
  letter-spacing: 0.03em;
  font-weight: var(--fw-regular);
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text);
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--c-border);
  transition: border-color var(--t-fast);
  font-weight: var(--fw-medium);
  align-self: flex-start;
}

.project-card__link:hover {
  border-color: var(--c-text);
}

.project-card__link svg {
  transition: transform var(--t-fast);
}

.project-card__link:hover svg {
  transform: translate(2px, -2px);
}

/* ==========================================================================
   SKILLS
   ========================================================================== */
.skills__heading,
.experience__heading {
  font-size: var(--fs-h2);
  font-weight: var(--fw-semibold);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.skill-group {
  padding: 2rem;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  transition: all var(--t-medium);
}

.skill-group:hover {
  border-color: var(--c-border-hover);
}

.skill-group__title {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-3);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--fw-medium);
}

.skill-group__icon {
  font-size: 0.9rem;
  opacity: 0.5;
}

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

.pill {
  padding: 0.5rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  font-size: var(--fs-caption);
  color: var(--c-text-2);
  transition: all var(--t-fast);
  font-weight: var(--fw-regular);
}

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

.pill--accent {
  border-color: var(--c-accent-dim);
  color: var(--c-accent);
}

.pill--accent:hover {
  border-color: var(--c-accent);
}

/* ==========================================================================
   TIMELINE
   ========================================================================== */
.timeline__item {
  position: relative;
  padding-bottom: 3rem;
  padding-left: 2rem;
}

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

.timeline__marker {
  position: absolute;
  left: -2rem;
  top: 0.35rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 1.5px solid var(--c-text-3);
  transform: translateX(-50%);
  margin-left: 0.5px;
}

.timeline__period {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-4);
  display: block;
  margin-bottom: 0.5rem;
  font-weight: var(--fw-medium);
}

.timeline__title {
  font-size: var(--fs-body);
  font-weight: var(--fw-semibold);
  margin-bottom: 0.25rem;
}

.timeline__role {
  font-size: var(--fs-caption);
  color: var(--c-text-3);
  margin-bottom: 0.75rem;
  display: block;
  font-weight: var(--fw-regular);
}

.timeline__desc {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.7;
  font-weight: var(--fw-light);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact__heading {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: var(--fw-semibold);
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 1rem 0 2rem;
}

.contact__text {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--c-text-3);
  max-width: 500px;
  margin-bottom: 3rem;
  line-height: 1.7;
  font-weight: var(--fw-light);
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer__brand {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.05em;
  color: var(--c-text-2);
}

.footer__note {
  font-size: var(--fs-caption);
  color: var(--c-text-4);
  font-weight: var(--fw-light);
}

.footer__copy {
  font-size: var(--fs-caption);
  color: var(--c-text-4);
  font-weight: var(--fw-light);
}

/* ==========================================================================
   NAV ACTIONS (theme toggle + hamburger)
   ========================================================================== */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ==========================================================================
   THEME TOGGLE BUTTON
   ========================================================================== */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: transparent;
  color: var(--c-text-2);
  cursor: pointer;
  transition: all var(--t-fast);
  position: relative;
}

.theme-toggle:hover {
  color: var(--c-text);
  border-color: var(--c-border-hover);
}

/* Icon visibility — dark mode shows moon, light mode shows sun */
.theme-toggle__icon {
  position: absolute;
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

/* Default (dark theme): show moon, hide sun */
.theme-toggle__icon--moon {
  opacity: 1;
  transform: rotate(0deg);
}

.theme-toggle__icon--sun {
  opacity: 0;
  transform: rotate(-90deg);
}

/* Light theme: show sun, hide moon */
[data-theme="light"] .theme-toggle__icon--moon {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="light"] .theme-toggle__icon--sun {
  opacity: 1;
  transform: rotate(0deg);
}

/* ==========================================================================
   LIGHT THEME — Component Overrides
   ========================================================================== */
[data-theme="light"] .mobile-menu {
  background-color: var(--c-bg);
}

[data-theme="light"] .btn--primary {
  background-color: var(--c-text);
  color: var(--c-bg);
  border-color: var(--c-text);
}

[data-theme="light"] .btn--primary:hover {
  background-color: transparent;
  color: var(--c-text);
}

[data-theme="light"] .project-card__img {
  opacity: 1;
}

[data-theme="light"] .meta-card,
[data-theme="light"] .skill-group,
[data-theme="light"] .project-card {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: var(--theme-transition), transform var(--t-medium), box-shadow var(--t-medium);
}

[data-theme="light"] .project-card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .hero__badge-dot {
  box-shadow: 0 0 10px rgba(160, 136, 74, 0.2), 0 0 20px rgba(160, 136, 74, 0.1);
}

[data-theme="light"] ::selection {
  background: var(--c-text);
  color: var(--c-bg);
}