/* splayer.css - Bang mau that cua app Splayer */

:root {
  --nen: #0B1418;
  --the: #142C34;
  --chu-chinh: #ECF1F4;
  --chu-phu: #B0BBC1;
  --nhan: #22B8C8;
  --nhan-sang: #5FD4E0;
  --tim: #B24BF3;
  --vien: rgba(255, 255, 255, 0.14);
  --vien-nhat: rgba(255, 255, 255, 0.08);

  --bk-nut: 10px;
  --bk-the: 14px;
  --bk-lg: 20px;
}

@font-face {
  font-family: 'Be Vietnam Pro';
  src: url('../fonts/BeVietnamPro-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Be Vietnam Pro';
  src: url('../fonts/BeVietnamPro-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* Dat lai co ban */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-family: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  background-color: var(--nen);
  color: var(--chu-chinh);
  line-height: 1.5;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  padding: 0;
}

/* Tiep can: focus */
:focus-visible {
  outline: 2px solid var(--nhan-sang);
  outline-offset: 4px;
}

/* Kieu chu */
h1, h2, h3, h4 {
  color: var(--chu-chinh);
  margin-top: 0;
  margin-bottom: 16px;
  line-height: 1.2;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; margin-bottom: 8px; }

p {
  color: var(--chu-phu);
  margin-top: 0;
  margin-bottom: 16px;
}

a {
  color: var(--nhan);
  text-decoration: none;
}

a:hover {
  color: var(--nhan-sang);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  color: var(--chu-phu);
  margin-top: 0;
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
}

/* Layout chung */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.section {
  padding: 64px 0;
}

.section.container {
  padding-left: 16px;
  padding-right: 16px;
}

/* Bo qua toi noi dung */
.bo-qua {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--the);
  color: var(--chu-chinh);
  padding: 12px 16px;
  border-radius: var(--bk-nut);
  z-index: 1000;
  transition: top 0.2s;
}

.bo-qua:focus {
  top: 16px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background-color: var(--nen);
  border-bottom: 1px solid var(--vien-nhat);
  z-index: 100;
  padding: 12px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--chu-chinh);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-group:hover {
  text-decoration: none;
  color: var(--nhan-sang);
}

.logo-img {
  height: 32px;
  width: 32px;
}

.nav-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.nav-links a {
  color: var(--chu-chinh);
  font-weight: 700;
  padding: 8px 0; /* Muc tieu cham >= 44px (8+8+~24) */
}

.nav-links a:hover {
  color: var(--nhan-sang);
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 80px 0 64px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-content h1 {
  font-size: clamp(1.75rem, 8vw, 2.5rem);
  text-wrap: balance;
}

@media (min-width: 1024px) {
  .hero-content h1 {
    font-size: 3.5rem;
  }
}

.hero-content p {
  font-size: 1.125rem;
  margin-bottom: 32px;
}

.nut-nhom {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nut {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--bk-nut);
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  min-height: 44px;
  border: none;
  font-family: inherit;
  font-size: 1rem;
}

.nut:hover {
  text-decoration: none;
}

.nut-chinh {
  background: linear-gradient(135deg, var(--nhan), var(--tim));
  color: var(--chu-chinh);
}

.nut-chinh:hover {
  background: linear-gradient(135deg, var(--nhan-sang), var(--tim));
  color: var(--chu-chinh);
}

.nut-phu {
  background: var(--the);
  color: var(--chu-chinh);
  border: 1px solid var(--vien);
}

.nut-phu:hover {
  background: var(--vien-nhat);
  color: var(--chu-chinh);
}

.nut-cho {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--the);
  color: var(--chu-phu);
  border: 1px solid var(--vien-nhat);
}

.nut-cho:hover {
  background: var(--the);
  color: var(--chu-phu);
}

/* Khung dien thoai */
.dien-thoai {
  border: 4px solid var(--vien);
  border-radius: 24px; /* Bo goc ngoai lon hon 1 chut so voi khung trong */
  overflow: hidden;
  background: var(--the);
  aspect-ratio: 9 / 20;
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.dien-thoai img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* The chung */
.the {
  background: var(--the);
  border: 1px solid var(--vien-nhat);
  border-radius: var(--bk-the);
  padding: 24px;
}

/* Luoi 3 dieu khac biet */
.luoi-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .luoi-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Cau truc phan tinh nang co anh */
.tinh-nang-lon {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .tinh-nang-lon {
    grid-template-columns: 1fr 1fr;
  }
  .tinh-nang-lon.nguoc {
    direction: rtl;
  }
  .tinh-nang-lon.nguoc > * {
    direction: ltr;
  }
}

/* Khoi phu de */
.khoi-phu {
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--vien-nhat);
}

/* Luoi 12 the tinh nang */
.luoi-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 600px) {
  .luoi-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .luoi-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.the-nho {
  background: var(--the);
  border: 1px solid var(--vien-nhat);
  border-radius: var(--bk-the);
  padding: 16px;
}

.the-nho h3 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--nhan-sang);
}

.the-nho p {
  margin-bottom: 0;
  font-size: 0.875rem;
}

/* Footer */
.footer {
  background: var(--the);
  padding: 40px 0;
  border-top: 1px solid var(--vien);
  text-align: center;
  color: var(--chu-phu);
}

.footer a {
  padding: 8px; /* Cho muc tieu bam */
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 16px 0;
  flex-wrap: wrap;
}

/* Hai khung dien thoai canh nhau */
.cap-doi {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}
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