/* Nhạc Xe landing + checkout */
@import url("https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&display=swap");

:root {
  --bg: #07090c;
  --ink: #f4f7f5;
  --muted: #a3b0a8;
  --green: #1db954;
  --green-deep: #128c3e;
  --line: rgba(255, 255, 255, 0.1);
  --panel: rgba(16, 20, 18, 0.72);
  --warn: #ffb020;
  --radius: 18px;
  --max: 1120px;
  --font: "Be Vietnam Pro", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* —— Landing shell —— */
.landing-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px clamp(16px, 4vw, 40px);
  background: linear-gradient(to bottom, rgba(7, 9, 12, 0.85), transparent);
  backdrop-filter: blur(0px);
  transition: background 0.3s ease;
}
.landing-nav .logo {
  font-family: var(--font);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--green);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.landing-nav .nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
}
.landing-nav .nav-link {
  color: var(--ink);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 8px 10px;
  text-decoration: none;
  opacity: 0.9;
}
.landing-nav .nav-link:hover {
  color: var(--green);
  text-decoration: none;
}
.landing-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--green);
  color: #04140a;
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.landing-nav .nav-cta:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(29, 185, 84, 0.35);
}
.landing-nav.solid {
  background: rgba(7, 9, 12, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

/* —— Hero: one composition —— */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 9, 12, 0.25) 0%, rgba(7, 9, 12, 0.55) 45%, rgba(7, 9, 12, 0.96) 100%),
    url("/static/landing-hero.png") center / cover no-repeat;
  transform: scale(1.04);
  animation: heroDrift 18s ease-in-out infinite alternate;
}
@keyframes heroDrift {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.08) translate3d(-1.5%, -1%, 0); }
}
.hero-content {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 clamp(48px, 10vh, 96px);
  animation: riseIn 0.9s ease both;
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-brand {
  font-family: var(--font);
  font-weight: 800;
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--green);
  margin: 0 0 18px;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}
.hero-line {
  font-family: var(--font);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1.2;
  max-width: 16ch;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.hero-sub {
  max-width: 36ch;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.125rem);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: none;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--green);
  color: #04140a;
  box-shadow: 0 10px 30px rgba(29, 185, 84, 0.28);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-block { width: 100%; border-radius: 14px; }

/* —— Sections —— */
.section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(56px, 10vw, 96px) 0;
}
.section-head {
  max-width: 34rem;
  margin-bottom: clamp(28px, 5vw, 40px);
}
.section-head h2 {
  font-family: var(--font);
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 10px;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.story {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(24px, 5vw, 48px);
  align-items: center;
}
.story-visual {
  min-height: 280px;
  border-radius: calc(var(--radius) + 4px);
  background:
    linear-gradient(145deg, rgba(29, 185, 84, 0.18), transparent 50%),
    url("/static/landing-hero.png") 60% 40% / cover no-repeat;
  border: 1px solid var(--line);
  animation: fadeUp 0.8s ease both;
}
.story-copy h2 {
  font-family: var(--font);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}
.story-copy p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.05rem;
}
.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.checklist li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--ink);
}
.checklist li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--green);
  flex: none;
  box-shadow: 0 0 0 4px rgba(29, 185, 84, 0.15);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: step;
}
.step {
  padding: 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent);
  animation: fadeUp 0.7s ease both;
}
.step:nth-child(2) { animation-delay: 0.08s; }
.step:nth-child(3) { animation-delay: 0.16s; }
.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(29, 185, 84, 0.15);
  color: var(--green);
  font-family: var(--font);
  font-weight: 700;
  margin-bottom: 14px;
}
.step h3 {
  margin: 0 0 8px;
  font-family: var(--font);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}
.step p { margin: 0; color: var(--muted); font-size: 0.98rem; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* —— Pricing (interaction containers) —— */
#pricing {
  scroll-margin-top: 72px;
}
.plans {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.plan {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 18px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(10px);
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.plan:hover {
  border-color: rgba(29, 185, 84, 0.45);
  transform: translateY(-2px);
}
.plan.popular {
  border-color: rgba(29, 185, 84, 0.65);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(29, 185, 84, 0.2);
}
.plan .tag {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--green);
  color: #04140a;
}
.plan h3 {
  font-family: var(--font);
  font-size: 1.25rem;
  margin: 0;
  letter-spacing: -0.02em;
}
.plan .price {
  font-family: var(--font);
  font-size: 1.85rem;
  font-weight: 800;
  color: #9dffb8;
  margin: 4px 0;
  letter-spacing: -0.03em;
}
.plan .blurb {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
  min-height: 2.6em;
}
.plan label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--muted);
}
.plan input {
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.35);
  color: var(--ink);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
}
.plan input:focus {
  outline: 2px solid rgba(29, 185, 84, 0.45);
  border-color: transparent;
}

.final-cta {
  text-align: center;
  padding: clamp(48px, 8vw, 80px) 16px 24px;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(600px 200px at 50% 0%, rgba(29, 185, 84, 0.12), transparent 70%);
}
.final-cta h2 {
  font-family: var(--font);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 0 0 10px;
  letter-spacing: -0.03em;
}
.final-cta p { margin: 0 0 20px; color: var(--muted); }

.site-foot {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
}

/* —— Checkout pages —— */
body.checkout {
  min-height: 100vh;
  padding: 28px 16px 48px;
  background:
    radial-gradient(900px 420px at 50% -10%, #163525 0%, transparent 55%),
    var(--bg);
}
.card {
  background: rgba(18, 22, 20, 0.9);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}
.narrow { max-width: 460px; margin: 0 auto; }
.brand {
  color: var(--green);
  font-family: var(--font);
  font-weight: 800;
  margin: 0 0 8px;
  font-size: 1.35rem;
}
.amount {
  font-family: var(--font);
  font-size: 2.1rem;
  font-weight: 800;
  text-align: center;
  margin: 12px 0 16px;
  color: #9dffb8;
}
.qr {
  width: min(260px, 100%);
  margin: 0 auto 12px;
  border-radius: 12px;
  background: #fff;
  padding: 10px;
}
.qr-wrap { margin-bottom: 16px; }
.qr-hint { font-size: 0.88rem; margin: 10px 0 0; line-height: 1.4; }
.pay-info { display: grid; gap: 10px; margin-bottom: 14px; }
.pay-info > div {
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  background: rgba(0,0,0,0.28);
  border-radius: 10px;
  border: 1px solid var(--line);
}
.pay-info span { color: var(--muted); font-size: 12px; }
.pay-info .hl { border-color: rgba(29, 185, 84, 0.45); }
.pay-info b { word-break: break-all; }
.mini {
  width: auto;
  margin-top: 6px;
  padding: 6px 10px;
  font-size: 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.warn { color: var(--warn); font-size: 14px; line-height: 1.45; }
.status { text-align: center; color: var(--muted); }
.code-box {
  background: rgba(0,0,0,0.28);
  border: 1px solid rgba(29, 185, 84, 0.35);
  border-radius: 12px;
  padding: 14px;
  text-align: center;
  margin: 16px 0;
}
.code-box span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.code-box code {
  display: block;
  font-size: 1.15rem;
  color: #9dffb8;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.steps-list { color: var(--muted); line-height: 1.6; }

/* —— Download / guide —— */
.download-page { padding-top: 72px; }
.dl-main {
  width: min(720px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 64px;
}
.dl-hero {
  margin-bottom: 40px;
  animation: riseIn 0.7s ease both;
}
.dl-kicker {
  margin: 0 0 8px;
  color: var(--green);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.dl-hero h1 {
  font-family: var(--font);
  font-size: clamp(1.85rem, 4.5vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 12px;
}
.dl-lead {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 40ch;
}
.dl-cta { margin-top: 8px; }
.btn-lg {
  min-height: 54px;
  padding: 0 28px;
  font-size: 1.05rem;
  width: 100%;
  max-width: 360px;
  border-radius: 14px;
}
.dl-meta { margin: 12px 0 0; font-size: 0.9rem; text-align: left; }
.dl-section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.dl-section h2 {
  font-family: var(--font);
  font-size: clamp(1.35rem, 3vw, 1.7rem);
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.guide-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: guide;
  display: grid;
  gap: 18px;
}
.guide-list li {
  counter-increment: guide;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px 14px;
  align-items: start;
}
.guide-list li::before {
  content: counter(guide);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(29, 185, 84, 0.15);
  color: var(--green);
  font-weight: 800;
  display: grid;
  place-items: center;
  grid-row: 1 / span 2;
}
.guide-list strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.guide-list span {
  color: var(--muted);
  font-size: 0.98rem;
}
.guide-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.guide-bullets li {
  padding-left: 18px;
  position: relative;
  color: var(--muted);
}
.guide-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
}
.guide-bullets b { color: var(--ink); }
.tip {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.95rem;
}
.dl-footer-cta {
  margin-top: 12px;
  padding: 28px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(29, 185, 84, 0.12), transparent 60%);
}
.dl-footer-cta h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}
.dl-footer-cta p {
  margin: 0 0 18px;
  color: var(--muted);
}

@media (max-width: 960px) {
  .plans { grid-template-columns: repeat(2, 1fr); }
  .story { grid-template-columns: 1fr; }
  .story-visual { min-height: 220px; order: -1; }
}
@media (max-width: 640px) {
  .plans { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .hero-content { padding-bottom: 40px; }
  .hero-brand { font-size: clamp(2.6rem, 14vw, 3.4rem); }
  .landing-nav { padding-top: 12px; }
  .btn-lg { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-media, .hero-content, .step, .story-visual { animation: none; }
}