:root {
  --orange: #ff8418;
  --orange-light: #ffad55;
  --gold: #ffc56f;
  --black: #050403;
  --dark: #0b0806;
  --dark-soft: #14100d;
  --text: #fff8ee;
  --muted: #cbb9a7;
  --border: rgba(255, 142, 39, 0.28);
  --glass: rgba(13, 9, 6, 0.76);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--black);
  overflow-x: hidden;
}

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

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

button,
input {
  font: inherit;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

/* THANH MENU */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 4, 3, 0.72);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(0 0 14px rgba(255, 126, 25, 0.38));
}

.brand span {
  color: var(--orange);
  font-size: 18px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.main-nav a {
  color: #f5e9dd;
  font-size: 14px;
  transition: 0.25s ease;
}

.main-nav a:hover {
  color: var(--orange);
}

/* PHẦN ĐẦU TRANG */

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 120px 0 70px;
  background:
    linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.76),
      rgba(0, 0, 0, 0.22),
      rgba(0, 0, 0, 0.76)
    ),
    url("background.png") center center / cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 50% 30%,
      rgba(255, 126, 22, 0.1),
      transparent 34%
    ),
    linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.08),
      rgba(0, 0, 0, 0.42) 70%,
      var(--black)
    );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  text-align: center;
  animation: fadeUp 0.9s ease both;
}

.hero-logo {
  width: min(340px, 80vw);
  max-height: 250px;
  object-fit: contain;
  margin: 0 auto 10px;
  filter: drop-shadow(0 0 24px rgba(255, 116, 12, 0.3));
}

.hero-kicker {
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 5px;
}

.hero h1 {
  margin-bottom: 18px;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  text-shadow: 0 8px 30px rgba(0, 0, 0, 0.72);
}

.hero-description {
  max-width: 650px;
  margin: 0 auto 30px;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  min-width: 205px;
  padding: 15px 22px;
  border: 1px solid var(--border);
  border-radius: 14px;
  font-weight: 800;
  letter-spacing: 0.3px;
  transition: 0.25s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

.btn-primary {
  color: #241000;
  background: linear-gradient(135deg, #ffa246, #e96800);
  box-shadow: 0 12px 32px rgba(255, 105, 0, 0.24);
}

.btn-outline {
  color: white;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
}

.btn-outline:hover {
  border-color: rgba(255, 168, 75, 0.72);
}

/* PHẦN CHUNG */

.section {
  padding: 82px 0;
}

.section-heading {
  margin-bottom: 36px;
  text-align: center;
}

.section-heading span {
  display: block;
  margin-bottom: 10px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 4px;
}

.section-heading h2 {
  font-size: clamp(30px, 4vw, 46px);
}

.dark-section {
  background: var(--dark);
}

/* DỊCH VỤ */

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card {
  padding: 30px 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  text-align: center;
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.06),
      rgba(255, 255, 255, 0.015)
    );
  transition: 0.25s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border);
  box-shadow: var(--shadow);
}

.service-icon {
  margin-bottom: 15px;
  font-size: 36px;
}

.service-card h3 {
  margin-bottom: 10px;
  color: var(--gold);
  font-size: 21px;
}

.service-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

/* CỔNG KHÁCH HÀNG */

.customer-section {
  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(255, 126, 25, 0.08),
      transparent 34%
    ),
    var(--black);
}

.search-box {
  max-width: 650px;
  margin: 0 auto 30px;
  padding: 9px;
  border: 1px solid var(--border);
  border-radius: 17px;
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(16px);
}

.search-box input {
  width: 100%;
  padding: 14px 16px;
  border: 0;
  outline: 0;
  color: white;
  background: transparent;
  font-size: 16px;
}

.search-box input::placeholder {
  color: #bba895;
}

.customer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.customer-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--glass);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.22);
  transition: 0.25s ease;
}

.customer-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 153, 54, 0.72);
  box-shadow: var(--shadow);
}

.customer-code {
  margin-bottom: 10px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
}

.customer-card h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.customer-card p {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 14px;
}

.customer-card a {
  display: inline-block;
  padding: 11px 15px;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--gold);
  font-weight: 800;
  transition: 0.2s ease;
}

.customer-card a:hover {
  background: rgba(255, 129, 22, 0.11);
}

.empty-message {
  margin-top: 28px;
  color: var(--muted);
  text-align: center;
}

/* CHÂN TRANG */

footer {
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #040302;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  text-align: left;
  color: var(--muted);
}

.footer-content img {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

.footer-content strong {
  color: var(--orange);
}

/* DÙNG CHUNG */

.hidden {
  display: none !important;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* TABLET */

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .customer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ĐIỆN THOẠI */

@media (max-width: 600px) {
  .container {
    width: min(100% - 24px, 1120px);
  }

  .topbar {
    position: absolute;
  }

  .nav-wrap {
    min-height: 66px;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .brand span {
    font-size: 15px;
  }

  .hero {
    min-height: 90vh;
    padding: 100px 0 58px;
    background-position: 52% center;
  }

  .hero-logo {
    width: min(280px, 82vw);
  }

  .hero-kicker {
    letter-spacing: 3px;
    font-size: 11px;
  }

  .hero-description {
    font-size: 16px;
  }

  .btn {
    width: 100%;
    max-width: 330px;
  }

  .section {
    padding: 60px 0;
  }

  .services-grid,
  .customer-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}




/* TRANG RIÊNG KHÁCH HÀNG */

.customer-page {
  min-height: 100vh;
  background: var(--black);
}

.customer-hero {
  position: relative;
  min-height: 430px;
  display: flex;
  align-items: end;
  padding: 130px 0 60px;
  background:
    linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.78),
      rgba(0, 0, 0, 0.32),
      rgba(0, 0, 0, 0.78)
    ),
    url("background.png") center center / cover no-repeat;
}

.customer-page-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 50% 30%,
      rgba(255, 126, 25, 0.08),
      transparent 35%
    ),
    linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.12),
      var(--black)
    );
}

.customer-page-content {
  position: relative;
  z-index: 2;
}

.back-link {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--gold);
  font-weight: 700;
}

.customer-profile {
  display: flex;
  align-items: center;
  gap: 24px;
}

.customer-profile img {
  width: 110px;
  height: 110px;
  object-fit: contain;
  filter: drop-shadow(0 0 22px rgba(255, 126, 25, 0.3));
}

.customer-page-code {
  margin-bottom: 8px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 3px;
}

.customer-profile h1 {
  margin-bottom: 8px;
  font-size: clamp(34px, 5vw, 58px);
}

.customer-profile p:last-child {
  color: var(--muted);
}

.song-section {
  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(255, 126, 25, 0.07),
      transparent 34%
    ),
    var(--black);
}

.song-list {
  display: grid;
  gap: 15px;
  max-width: 900px;
  margin: 0 auto;
}

.song-card {
  display: grid;
  grid-template-columns: 68px 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--glass);
  backdrop-filter: blur(14px);
  transition: 0.25s ease;
}

.song-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 153, 54, 0.72);
  box-shadow: var(--shadow);
}

.song-number {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--orange);
  font-weight: 800;
  background: rgba(255, 132, 24, 0.08);
}

.song-info h3 {
  margin-bottom: 6px;
  color: var(--text);
  font-size: 19px;
}

.song-info p {
  color: var(--muted);
  font-size: 14px;
}

.song-download {
  padding: 12px 18px;
  border-radius: 12px;
  color: #241000;
  background: linear-gradient(135deg, #ffa246, #e96800);
  font-weight: 800;
  transition: 0.22s ease;
}

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

.not-found {
  max-width: 620px;
  margin: 0 auto;
  padding: 34px;
  border: 1px solid var(--border);
  border-radius: 20px;
  text-align: center;
  background: var(--glass);
}

.not-found h2 {
  margin-bottom: 12px;
}

.not-found p {
  margin-bottom: 24px;
  color: var(--muted);
}

@media (max-width: 650px) {
  .customer-hero {
    min-height: 390px;
    padding-top: 105px;
  }

  .customer-profile {
    flex-direction: column;
    align-items: flex-start;
  }

  .customer-profile img {
    width: 90px;
    height: 90px;
  }

  .song-card {
    grid-template-columns: 54px 1fr;
  }

  .song-download {
    grid-column: 1 / -1;
    width: 100%;
    text-align: center;
  }
}


/* TRANG CHỦ TỐI GIẢN */

.hero-clean {
  min-height: 100vh;
}

.hero-content-clean {
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 55px;
}

.hero-content-clean .hero-actions {
  padding: 16px;
  border: 1px solid rgba(255, 150, 50, 0.22);
  border-radius: 18px;
  background: rgba(5, 4, 3, 0.42);
  backdrop-filter: blur(10px);
}

@media (max-width: 600px) {
  .hero-content-clean {
    min-height: 82vh;
    padding-bottom: 35px;
  }

  .hero-content-clean .hero-actions {
    width: 100%;
    max-width: 360px;
  }
}