/* Ava on Your Desktop — landing
   Brand: ink desk + magenta/cyan neon from itch art */

:root {
  --ink: #07070d;
  --ink-2: #10101a;
  --fog: rgba(236, 240, 255, 0.92);
  --muted: rgba(210, 218, 240, 0.72);
  --line: rgba(160, 180, 255, 0.16);
  --magenta: #ff3db8;
  --cyan: #3de0ff;
  --accent: linear-gradient(115deg, var(--magenta), #8b5cff 45%, var(--cyan));
  --font-display: "Syne", "Noto Sans TC", system-ui, sans-serif;
  --font-body: "Noto Sans TC", "Manrope", "Segoe UI", sans-serif;
  --font-price: "Manrope", "Noto Sans TC", system-ui, sans-serif;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--fog);
  background: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  color: #000;
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
}

/* —— Top bar —— */
.top {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: linear-gradient(to bottom, rgba(7, 7, 13, 0.85), rgba(7, 7, 13, 0));
  backdrop-filter: blur(0px);
  transition: background 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
}

.top.is-solid {
  background: rgba(7, 7, 13, 0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.top__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.top__brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.top__right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.top__nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.92rem;
}

.top__nav a {
  text-decoration: none;
  color: var(--muted);
  transition: color 0.2s ease;
}

.top__nav a:hover {
  color: #fff;
}

.lang {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  padding: 0.15rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang__btn {
  appearance: none;
  border: 0;
  margin: 0;
  min-width: 2.5rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-price);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.lang__btn:hover {
  color: #fff;
}

.lang__btn.is-active {
  color: #0a0612;
  background: var(--accent);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: end;
  gap: 1.5rem;
  padding: 6.5rem 1.5rem 3.5rem;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.04);
  animation: heroDrift 22s ease-in-out infinite alternate;
}

.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(7, 7, 13, 0.88) 0%, rgba(7, 7, 13, 0.55) 48%, rgba(7, 7, 13, 0.35) 100%),
    linear-gradient(to top, rgba(7, 7, 13, 0.92) 0%, transparent 42%);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 34rem;
  padding-bottom: 1rem;
  opacity: 0;
  transform: translateY(22px);
  animation: riseIn 0.9s var(--ease) 0.15s forwards;
}

.hero__brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  background: var(--accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero__lead {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 32ch;
}

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

.hero__portrait {
  position: relative;
  z-index: 2;
  margin: 0;
  justify-self: end;
  width: min(420px, 100%);
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  animation: riseIn 1s var(--ease) 0.35s forwards;
}

.hero__portrait img {
  width: 100%;
  border-radius: 28px;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.55));
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.7rem 1.35rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), filter 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  color: #0a0612;
  background: var(--accent);
  box-shadow: 0 10px 28px rgba(255, 61, 184, 0.22);
}

.btn--primary:hover {
  filter: brightness(1.06);
}

.btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.08);
}

.btn--disabled,
.btn.btn--disabled {
  opacity: 0.55;
  pointer-events: none;
  cursor: not-allowed;
  box-shadow: none;
  filter: none;
  transform: none !important;
}

/* —— Companion band —— */
.band {
  position: relative;
  padding: 5.5rem 1.5rem;
  background:
    radial-gradient(600px 280px at 20% 0%, rgba(255, 61, 184, 0.12), transparent 70%),
    radial-gradient(520px 260px at 90% 30%, rgba(61, 224, 255, 0.1), transparent 70%),
    var(--ink-2);
  border-top: 1px solid var(--line);
}

.band__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.band__title,
.pricing__title,
.support__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: -0.02em;
}

.band__text,
.pricing__lead,
.support__text {
  margin: 0 0 2.25rem;
  color: var(--muted);
  max-width: 52ch;
  font-size: 1.05rem;
}

.traits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem 2rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.traits li {
  display: grid;
  gap: 0.45rem;
}

.traits strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
}

.traits span {
  color: var(--muted);
  font-size: 0.95rem;
}

/* —— Pricing —— */
.pricing {
  padding: 5.5rem 1.5rem 4rem;
  background: var(--ink);
  border-top: 1px solid var(--line);
}

.pricing__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  align-items: stretch;
}

.plan {
  padding: 1.5rem 1.35rem 1.6rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
}

.plan--pro {
  border-color: rgba(255, 61, 184, 0.45);
  background:
    linear-gradient(160deg, rgba(255, 61, 184, 0.12), rgba(61, 224, 255, 0.06) 55%, transparent),
    rgba(255, 255, 255, 0.03);
}

.plan__name {
  margin: 0 0 0.6rem;
  font-family: var(--font-price);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.plan__price {
  margin: 0 0 0.35rem;
  font-family: var(--font-price);
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.015em;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
}

.plan__amount {
  font-family: inherit;
  font-weight: inherit;
}

.plan__price small {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  margin-left: 0.25rem;
  letter-spacing: 0;
}

.plan__note {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.plan__list {
  margin: 0 0 1.25rem;
  padding: 0 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.plan__list li + li {
  margin-top: 0.35rem;
}

.plan__cta {
  width: 100%;
}

.plan__pay {
  margin: 0;
  padding-top: 0.35rem;
  border-top: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--font-price);
  font-size: 0.88rem;
  font-weight: 700;
}

.pricing__fine {
  margin: 1.5rem 0 0;
  color: rgba(210, 218, 240, 0.5);
  font-size: 0.82rem;
  max-width: 70ch;
}

/* —— Support —— */
.support {
  padding: 5rem 1.5rem;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}

.support__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.support__meta {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 0.5rem;
}

.support__meta dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.35rem;
}

.support__meta dd {
  margin: 0;
  color: var(--muted);
}

.support__meta a {
  color: #fff;
}

/* —— Footer —— */
.foot {
  padding: 2rem 1.5rem 2.75rem;
  border-top: 1px solid var(--line);
  text-align: center;
  color: rgba(210, 218, 240, 0.45);
  font-size: 0.85rem;
}

.foot p {
  margin: 0;
}

.foot__sub {
  margin-top: 0.35rem !important;
}

/* —— Reveal on scroll —— */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@keyframes riseIn {
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.08) translate3d(-1.2%, -0.8%, 0);
  }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    align-items: start;
    min-height: auto;
    padding-top: 5.5rem;
    padding-bottom: 2.5rem;
  }

  .hero__portrait {
    order: -1;
    width: min(280px, 70%);
    justify-self: center;
    margin-bottom: 0.5rem;
  }

  .hero__brand {
    text-align: center;
  }

  .hero__title,
  .hero__lead {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .traits,
  .plans,
  .support__meta {
    grid-template-columns: 1fr;
  }

  .top__nav {
    gap: 0.7rem;
    font-size: 0.82rem;
  }

  .top__right {
    gap: 0.65rem;
  }
}

/* —— Legal pages —— */
.legal-page .top {
  position: sticky;
}

.legal {
  max-width: 720px;
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
}

.legal h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.legal h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
}

.legal__updated {
  color: var(--muted);
  font-size: 0.9rem;
}

.legal p,
.legal li {
  color: var(--muted);
}

.legal a {
  color: var(--cyan);
}

.faq {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.25rem;
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
}

.faq li {
  display: grid;
  gap: 0.35rem;
}

.faq strong {
  font-family: var(--font-display);
  font-size: 1.02rem;
}

.faq span {
  color: var(--muted);
  font-size: 0.95rem;
}

.foot a {
  color: var(--muted);
  text-decoration: none;
}

.foot a:hover {
  color: #fff;
}

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

  .hero__bg,
  .hero__content,
  .hero__portrait,
  .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}