/* =========================================================
   BINH DUONG STUDIO - STYLE.CSS HOÀN CHỈNH
   Phong cách: đỏ đen sang trọng, ánh kim loại, hiện đại
   Ảnh máy tính và điện thoại: background.png
========================================================= */

:root {
  --red: #d71920;
  --red-light: #ff5a60;
  --red-dark: #7b080c;
  --silver-red: #f0e7e7;

  --black: #050505;
  --dark: #0b0909;
  --dark-soft: #151010;

  --text: #fffafa;
  --muted: #c9bebe;

  --border: rgba(225, 52, 58, 0.30);
  --border-strong: rgba(255, 91, 96, 0.66);
  --glass: rgba(12, 8, 8, 0.82);

  --shadow:
    0 20px 60px rgba(0, 0, 0, 0.54),
    0 0 28px rgba(190, 18, 24, 0.14);
}

/* RESET */

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  color: var(--text);
  font-family: "Be Vietnam Pro", Arial, Helvetica, sans-serif;
  background:
    radial-gradient(
      circle at 20% 18%,
      rgba(205, 25, 31, 0.10),
      transparent 30%
    ),
    radial-gradient(
      circle at 84% 58%,
      rgba(220, 42, 48, 0.055),
      transparent 34%
    ),
    linear-gradient(
      180deg,
      #070505 0%,
      #120909 48%,
      #050404 100%
    );
}

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

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

button,
input {
  font: inherit;
}

button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}

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

/* =========================================================
   THANH MENU
========================================================= */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  border-bottom: 1px solid rgba(235, 65, 70, 0.16);
  background: rgba(8, 6, 12, 0.78);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.20);
}

.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 12px rgba(224, 30, 36, 0.32))
    drop-shadow(0 0 24px rgba(126, 8, 12, 0.22));
}

.brand span {
  font-family: "Be Vietnam Pro", sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.6px;

  background: linear-gradient(
    180deg,
    #ffffff 0%,
    #f1dddd 34%,
    #ff777b 67%,
    #b80f15 100%
  );

  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;

  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.10),
    0 0 10px rgba(211, 27, 33, 0.16);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 38px;
}


.main-nav a {

    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    font-family: "Montserrat", sans-serif;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .3px;
    line-height: 1;

    color: #f4eeee;

    white-space: nowrap;

    transition:
        .25s;
}


.main-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -9px;
  width: 0;
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(
    90deg,
    transparent,
    var(--red-light),
    transparent
  );
  transition: width 0.25s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: #ff686d;
  transform: translateY(-1px);
  text-shadow: 0 0 10px rgba(215, 25, 32, 0.22);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

/* =========================================================
   HERO TRANG CHỦ
========================================================= */

.hero,
.hero-clean {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 110px 0 58px;
  background:
    linear-gradient(
      90deg,
      rgba(3, 2, 2, 0.74),
      rgba(3, 2, 2, 0.18) 38%,
      rgba(3, 2, 2, 0.18) 62%,
      rgba(3, 2, 2, 0.74)
    ),
    url("background.png") center center / cover no-repeat;
  filter: saturate(1.03) contrast(1.03);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(
      circle at 50% 26%,
      rgba(205, 28, 34, 0.12),
      transparent 40%
    ),
    linear-gradient(
      to bottom,
      rgba(5, 3, 8, 0.03),
      rgba(5, 3, 8, 0.12) 70%,
      rgba(5, 3, 8, 0.38)
    );
}

.hero::after,
.hero-clean::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(
      circle at 50% 24%,
      rgba(235, 65, 70, 0.10),
      transparent 19%
    ),
    radial-gradient(
      circle at 30% 48%,
      rgba(174, 17, 22, 0.05),
      transparent 25%
    ),
    radial-gradient(
      circle at 70% 48%,
      rgba(174, 17, 22, 0.05),
      transparent 25%
    );
}

.hero-content,
.hero-content-clean {
  position: relative;
  z-index: 2;
  width: 100%;
  min-height: calc(100vh - 168px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 34px;
  text-align: center;
  animation: fadeUp 0.9s ease both;
}

.hero-logo {
  width: min(340px, 80vw);
  max-height: 250px;
  margin: 0 auto 10px;
  object-fit: contain;
  filter:
    drop-shadow(0 0 16px rgba(147, 95, 255, 0.28))
    drop-shadow(0 0 32px rgba(92, 48, 170, 0.16));
}

.hero-kicker {
  margin-bottom: 18px;
  color: var(--red-light);
  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),
    0 0 18px rgba(125, 80, 220, 0.08);
}

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

/* =========================================================
   KHUNG NÚT TRANG CHỦ
========================================================= */

.hero-actions,
.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 18px;
  width: max-content;
  max-width: calc(100vw - 40px);
  padding: 14px 16px;
  border: 1px solid rgba(230, 56, 62, 0.25);
  border-radius: 20px;
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.045),
      rgba(180, 18, 23, 0.035)
    ),
    rgba(9, 6, 14, 0.50);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.38),
    0 0 32px rgba(185, 20, 25, 0.075),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.btn,
.btn-primary,
.btn-music,
.hero-buttons .btn,
.hero-actions .btn {
  position: relative;
  min-width: 180px;
  min-height: 54px;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid rgba(255, 104, 108, 0.72);
  border-radius: 14px;
  color: #ffffff;
  background:
    linear-gradient(
      180deg,
      #e1282f 0%,
      #a20f15 48%,
      #5b0509 100%
    );
  box-shadow:
    0 11px 28px rgba(112, 7, 12, 0.38),
    0 0 18px rgba(214, 28, 34, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.27),
    inset 0 -1px 0 rgba(46, 3, 5, 0.42);
  text-align: center;
  text-shadow: 0 2px 7px rgba(16, 8, 30, 0.50);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.35px;
  cursor: pointer;
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
}

.btn::before,
.hero-buttons .btn::before,
.hero-actions .btn::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 12px;
  pointer-events: none;
  background:
    linear-gradient(
      110deg,
      transparent 15%,
      rgba(255, 255, 255, 0.11) 45%,
      transparent 72%
    );
  opacity: 0.60;
}

.btn::after,
.hero-buttons .btn::after,
.hero-actions .btn::after {
  content: "";
  position: absolute;
  top: 0;
  left: -65%;
  width: 38%;
  height: 100%;
  pointer-events: none;
  transform: skewX(-22deg);
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.24),
    transparent
  );
  transition: left 0.55s ease;
}

.btn:hover,
.hero-buttons .btn:hover,
.hero-actions .btn:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 170, 173, 0.92);
  background:
    linear-gradient(
      180deg,
      rgba(231, 42, 48, 0.99),
      rgba(116, 8, 13, 0.99)
    );
  box-shadow:
    0 15px 36px rgba(126, 8, 13, 0.48),
    0 0 26px rgba(239, 53, 59, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.34);
}

.btn:hover::after,
.hero-buttons .btn:hover::after,
.hero-actions .btn:hover::after {
  left: 128%;
}

.btn:focus-visible {
  outline: 3px solid rgba(255, 108, 112, 0.82);
  outline-offset: 4px;
}

/* =========================================================
   PHẦN CHUNG
========================================================= */

.section {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 82px 0;
}

.section::before {
  content: "";
  position: absolute;
  top: -260px;
  left: 50%;
  z-index: -1;
  width: 520px;
  height: 520px;
  transform: translateX(-50%);
  pointer-events: none;
  background: radial-gradient(
    circle,
    rgba(207, 25, 31, 0.12) 0%,
    rgba(207, 25, 31, 0.04) 40%,
    transparent 70%
  );
  filter: blur(8px);
}

.section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(700px, 78%);
  height: 1px;
  transform: translateX(-50%);
  pointer-events: none;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(242, 68, 74, 0.44),
    transparent
  );
  box-shadow: 0 0 16px rgba(208, 26, 32, 0.22);
}

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

.section-heading span {
  display: block;
  margin-bottom: 10px;
  color: var(--red-light);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 4px;
  text-shadow: 0 0 16px rgba(143, 94, 255, 0.18);
}

.section-heading h2 {
  font-size: clamp(30px, 4vw, 46px);
  text-shadow:
    0 8px 30px rgba(0, 0, 0, 0.80),
    0 0 20px rgba(137, 88, 235, 0.07);
}

.dark-section {
  background:
    radial-gradient(
      circle at 15% 30%,
      rgba(207, 25, 31, 0.08),
      transparent 28%
    ),
    radial-gradient(
      circle at 85% 70%,
      rgba(224, 39, 45, 0.05),
      transparent 30%
    ),
    linear-gradient(
      145deg,
      #130d1d,
      #070505 55%,
      #160a0a
    );
}

/* =========================================================
   DỊCH VỤ
========================================================= */

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-card,
.customer-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(230, 69, 74, 0.17);
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.065),
      rgba(184, 19, 24, 0.03)
    ),
    rgba(18, 12, 27, 0.76);
  box-shadow:
    0 18px 45px rgba(0, 0, 0, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.045);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.service-card::before,
.customer-card::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -70px;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(
    circle,
    rgba(226, 39, 45, 0.14),
    transparent 68%
  );
}

.service-card {
  padding: 30px 22px;
  border-radius: 20px;
  text-align: center;
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

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

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

.service-card h3 {
  margin-bottom: 10px;
  color: var(--silver-red);
  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(207, 25, 31, 0.13),
      transparent 32%
    ),
    radial-gradient(
      circle at 10% 80%,
      rgba(176, 124, 255, 0.04),
      transparent 28%
    ),
    linear-gradient(
      180deg,
      #070505,
      #140909 50%,
      #050404
    );
}

.search-box {
  max-width: 650px;
  margin: -8px auto 18px;
  padding: 7px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.065),
      rgba(183, 18, 23, 0.032)
    ),
    rgba(17, 11, 26, 0.80);
  box-shadow:
    0 20px 55px rgba(0, 0, 0, 0.36),
    0 0 26px rgba(117, 70, 210, 0.05);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition:
    border-color 0.22s ease,
    box-shadow 0.22s ease;
}

.search-box:focus-within {
  border-color: rgba(255, 96, 101, 0.74);
  box-shadow:
    0 20px 55px rgba(0, 0, 0, 0.36),
    0 0 0 4px rgba(207, 25, 31, 0.13);
}

.search-box input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 0;
  outline: 0;
  color: #ffffff;
  background: transparent;
  font-size: 13px;
}

.search-box input::placeholder {
  color: #b7aaaa;
  font-size: 13px;
}

.customer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.customer-card {
  padding: 14px;
  border-radius: 15px;
  transition:
    transform 0.24s ease,
    border-color 0.24s ease,
    box-shadow 0.24s ease,
    background-color 0.24s ease;
}

.customer-card:hover {
  transform: translateY(-3px);
  border-color: rgba(188, 151, 255, 0.58);
  box-shadow:
    0 18px 38px rgba(0, 0, 0, 0.30),
    0 0 22px rgba(115, 68, 206, 0.08);
}

.customer-code {
  margin-bottom: 5px;
  color: var(--red-light);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

.customer-card h3 {
  margin-bottom: 5px;
  overflow: hidden;
  color: var(--text);
  font-size: 16px;
  line-height: 1.2;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.customer-card p {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
}

.customer-card a {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--red-light);
  font-size: 10px;
  font-weight: 800;
  transition:
    color 0.20s ease,
    background 0.20s ease,
    border-color 0.20s ease;
}

.customer-card a:hover {
  border-color: var(--border-strong);
  color: #ffffff;
  background: rgba(211, 27, 33, 0.13);
}

.empty-message {
  margin-top: 18px;
  color: var(--muted);
  text-align: center;
  font-size: 12px;
}

/* CARD CÓ THỂ CLICK */

.customer-card-clickable {
  position: relative;
  cursor: pointer;
}

.customer-card-clickable::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    135deg,
    rgba(140, 89, 239, 0.07),
    transparent 56%
  );
  opacity: 0;
  transition: opacity 0.25s ease;
}

.customer-card-clickable:hover::after {
  opacity: 1;
}

.customer-card-clickable:focus-visible {
  outline: 3px solid rgba(182, 143, 255, 0.74);
  outline-offset: 4px;
}

.matched-songs {
  margin-bottom: 16px;
}

.matched-label {
  display: block;
  margin-bottom: 7px;
  color: #eadfdf;
  font-size: 13px;
  font-weight: 700;
}

.matched-song-title {
  margin: 0 0 7px;
  color: #ffffff;
  font-size: 16px;
  line-height: 1.4;
}

.customer-name {
  margin-top: 8px;
}

.customer-song-total {
  margin-bottom: 18px;
}

.customer-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(171, 128, 255, 0.20);
}

.customer-open-text {
  color: var(--red-light);
  font-weight: 800;
  letter-spacing: 0.5px;
}

.customer-card-arrow {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(183, 145, 255, 0.60);
  border-radius: 50%;
  color: var(--red-light);
  font-size: 22px;
  transition:
    transform 0.25s ease,
    background-color 0.25s ease,
    color 0.25s ease,
    box-shadow 0.25s ease;
}

.customer-card-clickable:hover .customer-card-arrow {
  transform: translateX(4px);
  color: #ffffff;
  background: linear-gradient(180deg, #df2027, #7c090d);
  box-shadow: 0 0 18px rgba(139, 92, 246, 0.22);
}

/* =========================================================
   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(7, 4, 11, 0.78),
      rgba(7, 4, 11, 0.30),
      rgba(7, 4, 11, 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(132, 81, 229, 0.08),
      transparent 35%
    ),
    linear-gradient(
      to bottom,
      rgba(5, 3, 8, 0.12),
      var(--black)
    );
}

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

.back-link {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--red-light);
  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 18px rgba(141, 90, 241, 0.24))
    drop-shadow(0 0 34px rgba(87, 45, 155, 0.14));
}

.customer-page-code {
  margin-bottom: 8px;
  color: var(--red-light);
  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(132, 81, 229, 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);
  box-shadow:
    0 16px 36px rgba(0, 0, 0, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.035);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition:
    transform 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.song-card:hover {
  transform: translateY(-3px);
  border-color: rgba(190, 155, 255, 0.66);
  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(--red-light);
  font-weight: 800;
  background: rgba(137, 88, 235, 0.08);
}

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

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

.song-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.song-listen,
.song-download {
  min-width: 105px;
  padding: 13px 20px;
  border-radius: 12px;
  font: inherit;
  font-weight: 800;
  text-align: center;
  cursor: pointer;
  transition:
    transform 0.24s ease,
    border-color 0.24s ease,
    background 0.24s ease,
    box-shadow 0.24s ease;
}

.song-listen {
  border: 1px solid rgba(187, 149, 255, 0.62);
  color: var(--red-light);
  background: rgba(137, 88, 235, 0.08);
}

.song-listen:hover {
  transform: translateY(-2px);
  color: #ffffff;
  border-color: rgba(216, 193, 255, 0.88);
  background: linear-gradient(180deg, #df2027, #79090d);
  box-shadow: 0 10px 24px rgba(91, 49, 159, 0.30);
}

.song-download {
  border: 1px solid rgba(207, 181, 255, 0.72);
  color: #ffffff;
  background: linear-gradient(180deg, #df2027, #71080c);
  box-shadow:
    0 10px 24px rgba(82, 43, 148, 0.30),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.song-download:hover {
  transform: translateY(-2px);
  background: linear-gradient(180deg, #ff555b, #8f0b10);
  box-shadow:
    0 13px 30px rgba(95, 51, 174, 0.38),
    0 0 18px rgba(147, 95, 255, 0.12);
}

.song-player {
  grid-column: 1 / -1;
  width: 100%;
  padding-top: 16px;
}

.song-player audio {
  display: block;
  width: 100%;
  height: 48px;
}

.song-player.hidden {
  display: none;
}

.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);
}

/* =========================================================
   CHÂN TRANG
========================================================= */

footer {
  position: relative;
  border-top: 1px solid rgba(177, 135, 255, 0.16);
  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(129, 78, 225, 0.08),
      transparent 48%
    ),
    linear-gradient(
      180deg,
      #0b0707,
      #030202
    );
}

.footer-content {
  min-height: 112px;
  padding: 18px 0 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  color: var(--muted);
  text-align: center;
  line-height: 1.4;
}

.footer-content p {
  margin: 0;
  font-size: 12px;
}

.footer-content strong {
  display: block;
  margin-bottom: 2px;
  color: #eee6e6;
  font-size: 16px;
}

.footer-content img {
  order: 2;
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(137, 88, 235, 0.18));
}

/* =========================================================
   DÙNG CHUNG
========================================================= */

.hidden {
  display: none !important;
}

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

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

/* =========================================================
   FONT BE VIETNAM PRO
========================================================= */

h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
a,
button,
input,
textarea {
  font-family: "Be Vietnam Pro", sans-serif;
}

h1,
h2,
h3 {
  font-weight: 700;
}

/* =========================================================
   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: 768px) {
  .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,
  .hero-clean {
    min-height: 100svh;
    padding: 100px 0 60px;
    background:
      linear-gradient(
        180deg,
        rgba(6, 4, 10, 0.16),
        rgba(6, 4, 10, 0.34),
        rgba(6, 4, 10, 0.72)
      ),
      url("background.png") 52% center / cover no-repeat;
  }

  .hero-content,
  .hero-content-clean {
    min-height: 82svh;
    padding-bottom: 28px;
  }

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

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

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

  .hero-actions,
  .hero-buttons {
    width: 100%;
    max-width: 360px;
    flex-direction: column;
    gap: 12px;
    padding: 12px;
  }

  .hero-actions .btn,
  .hero-buttons .btn,
  .btn {
    width: 100%;
    min-width: 0;
    max-width: 330px;
  }

  .section {
    padding: 64px 0;
  }

  .section::before {
    top: -170px;
    width: 340px;
    height: 340px;
  }

  .section::after {
    width: 82%;
  }

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

  .service-card,
  .customer-card {
    box-shadow:
      0 14px 35px rgba(0, 0, 0, 0.32),
      inset 0 1px 0 rgba(255, 255, 255, 0.04);
  }

  .customer-hero {
    min-height: 390px;
    padding: 105px 0 50px;
    background:
      linear-gradient(
        180deg,
        rgba(6, 4, 10, 0.18),
        rgba(6, 4, 10, 0.46),
        rgba(6, 4, 10, 0.90)
      ),
      url("background.png") center center / cover no-repeat;
  }

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

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

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

  .song-actions {
    grid-column: 1 / -1;
    width: 100%;
    justify-content: stretch;
  }

  .song-listen,
  .song-download {
    flex: 1;
    min-width: 130px;
  }

  .song-player {
    padding-top: 10px;
  }

  .customer-card-footer {
    margin-top: 16px;
  }

  .customer-card-arrow {
    width: 36px;
    height: 36px;
  }

  footer {
    padding: 26px 0 16px;
  }

  .footer-content {
    min-height: 96px;
    flex-direction: column;
    justify-content: center;
    gap: 7px;
    padding: 15px 0 11px;
    text-align: center;
  }

  .footer-content p {
    margin: 0;
    font-size: 12px;
    line-height: 1.45;
  }

  .footer-content strong {
    display: block;
    margin-bottom: 3px;
    font-size: 15px;
  }

  .footer-content img {
    width: 30px;
    height: 30px;
    margin-top: 3px;
    order: 2;
  }

  .footer-address {
    display: block;
    white-space: nowrap;
    font-size: 11px;
    letter-spacing: -0.15px;
  }
}

/* =========================================================
   ĐIỆN THOẠI NHỎ
========================================================= */

@media (max-width: 420px) {
  .brand {
    gap: 8px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .brand span {
    font-size: 14px;
  }

  .hero,
  .hero-clean {
    padding-top: 82px;
  }

  .hero-content,
  .hero-content-clean {
    min-height: 84svh;
    padding-bottom: 22px;
  }

  .hero-actions,
  .hero-buttons {
    padding: 11px;
  }

  .btn,
  .hero-actions .btn,
  .hero-buttons .btn {
    min-height: 52px;
    padding: 0 18px;
    font-size: 15px;
  }

  .footer-content p {
    font-size: 10.8px;
  }
}

/* Tôn trọng cài đặt giảm chuyển động */

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}