@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:ital,wght@0,400;0,700;1,400;1,700&display=swap');

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

* {
  margin: 0;
  padding: 0;
  font: inherit;
}

:root {

  /* --- Font Families --- */
  --font-sans: var(--font-main);
  --font-serif: var(--font-secondary);

  /* --- Font Sizes (Desktop baseline) --- */
  --text-hero: 48px;
  --text-h1: 36px;
  --text-h2: 28px;
  --text-h3: 20px;
  --text-h4: 16px;
  --text-body-lg: 16px;
  --text-body: 14px;
  --text-label: 13px;
  --text-caption: 12px;
  --text-overline: 11px;
  --text-price: 22px;
  --text-slogan: 20px;

  /* --- Font Weights --- */
  --weight-light: 300;
  --weight-regular: 400;
  --weight-bold: 700;

  /* --- Line Heights (bội số 4px) --- */
  --leading-hero: 56px;
  /* 48px text */
  --leading-h1: 44px;
  /* 36px text */
  --leading-h2: 36px;
  /* 28px text */
  --leading-h3: 28px;
  /* 20px text */
  --leading-h4: 24px;
  /* 16px text */
  --leading-body-lg: 24px;
  /* 16px text */
  --leading-body: 20px;
  /* 14px text */
  --leading-label: 20px;
  /* 13px text */
  --leading-caption: 16px;
  /* 12px text */
  --leading-overline: 16px;
  /* 11px text */
  --leading-price: 28px;
  /* 22px text */

  /* --- Letter Spacing --- */
  --tracking-hero: -0.5px;
  --tracking-h1: -0.3px;
  --tracking-h2: -0.2px;
  --tracking-normal: 0px;
  --tracking-overline: 1.5px;
  /* Badge UPPERCASE */
  --tracking-button: 0.5px;
  /* Button UPPERCASE */
  --tracking-table-hd: 0.5px;
  /* Table header */

  /* --- Colors (Typography) --- */
  --text-color-primary: #000000;
  --text-color-secondary: #575756;
  --text-color-disabled: #d1d3d4;
  --text-color-accent: #ed1b2d;
  --text-color-on-dark: #ffffff;
  --text-color-on-surface: #575756;
}

b {
  font-weight: 900;
}

/* ============================================================
   SECTION 3: RESPONSIVE OVERRIDES
   Tablet: 768px | Mobile: 375–767px
   ============================================================ */

/* --- Tablet (768px – 1023px) --- */
@media (min-width: 768px) and (max-width: 1023px) {
  :root {
    --text-hero: 36px;
    --leading-hero: 44px;

    --text-h1: 28px;
    --leading-h1: 36px;

    --text-h2: 24px;
    --leading-h2: 32px;

    --text-h3: 18px;
    --leading-h3: 26px;

    --text-price: 20px;
    --leading-price: 28px;

    --text-slogan: 18px;
  }
}

/* --- Mobile (< 768px) --- */
@media (max-width: 767px) {
  :root {
    --text-hero: 28px;
    --leading-hero: 36px;

    --text-h1: 24px;
    --leading-h1: 32px;

    --text-h2: 20px;
    --leading-h2: 28px;

    --text-h3: 16px;
    --leading-h3: 24px;

    --text-h4: 14px;
    --leading-h4: 20px;

    /* Body text KHÔNG scale xuống (min readable size) */
    --text-body: 14px;
    --leading-body: 20px;

    --text-price: 18px;
    --leading-price: 24px;

    --text-slogan: 16px;
  }
}


/* ============================================================
   SECTION 4: BASE RESET
   ============================================================ */

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  color: var(--text-color-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Reset heading margins — dùng spacing utilities thay */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  padding: 0;
}

p {
  margin: 0;
}


/* ============================================================
   SECTION 5: SEMANTIC HTML MAPPING
   Các tag HTML mặc định sẽ nhận đúng style từ scale
   ============================================================ */

h1 {
  font-family: var(--font-serif);
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-h1);
  color: var(--text-color-primary);
}

h2 {
  font-family: var(--font-serif);
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  line-height: var(--leading-h2);
  letter-spacing: var(--tracking-h2);
  color: var(--text-color-primary);
}

h3 {
  font-family: var(--font-serif);
  font-size: var(--text-h3);
  font-weight: var(--weight-bold);
  line-height: var(--leading-h3);
  letter-spacing: var(--tracking-normal);
  color: var(--text-color-primary);
}

h4 {
  font-family: var(--font-serif);
  font-size: var(--text-h4);
  font-weight: var(--weight-bold);
  line-height: var(--leading-h4);
  letter-spacing: var(--tracking-normal);
  color: var(--text-color-primary);
}

p {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  color: var(--text-color-primary);
}

small,
caption {
  font-family: var(--font-sans);
  font-size: var(--text-caption);
  font-weight: var(--weight-light);
  line-height: var(--leading-caption);
  color: var(--text-color-secondary);
}

label {
  font-family: var(--font-sans);
  font-size: var(--text-label);
  font-weight: var(--weight-bold);
  line-height: var(--leading-label);
  color: var(--text-color-primary);
}



/* SVN-Proxima Nova — Local font (đặt trong /fonts/ của project)
   Thay đường dẫn nếu cần */
@font-face {
  font-family: 'SVN-Proxima Nova';
  src: url('/fonts/SVN-ProximaNova-Light.woff2') format('woff2'),
    url('/fonts/SVN-ProximaNova-Light.woff') format('woff');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'SVN-Proxima Nova';
  src: url('/fonts/SVN-ProximaNova-Regular.woff2') format('woff2'),
    url('/fonts/SVN-ProximaNova-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'SVN-Proxima Nova';
  src: url('/fonts/SVN-ProximaNova-Bold.woff2') format('woff2'),
    url('/fonts/SVN-ProximaNova-Bold.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}


html {
  hanging-punctuation: first last;
}

body {
  min-height: 100svh;
  background-color: var(--clr-bg-body);
  color: var(--clr-text-main);
  font-family: var(--font-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img,
picture,
svg,
video,
canvas {
  max-width: 100%;
  display: block;
}

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

ul,
ol {
  list-style: none;
}

/* Typography Defaults */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  text-wrap: balance;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  max-width: 75ch;
  text-wrap: pretty;
}

/* Layout Utilities */
.container {
  width: min(100% - 3rem, 1200px);
  margin-inline: auto;
}

.flex {
  display: flex;
  gap: var(--gap, 1rem);
}

.grid {
  display: grid;
  gap: var(--gap, 1rem);
}

.page-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--clr-dark);
  text-align: left;
  margin-bottom: 2rem;
}

/* Global Return button style */
.btn-continue {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1px solid var(--clr-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-primary);
  cursor: pointer;
  margin-top: 16px;
  transition: all 0.2s ease;
}

.btn-continue:hover {
  background-color: rgba(227, 24, 55, 0.05);
}