/* ==========================================================================
   Reset + Base typography
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-relaxed);
  letter-spacing: 0;
  color: var(--color-black);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

input,
textarea,
select {
  font: inherit;
  color: inherit;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

p {
  margin: 0;
}

figure {
  margin: 0;
}

/* ==========================================================================
   Pretendard webfont (local)
   ========================================================================== */

@font-face {
  font-family: "Pretendard";
  font-weight: 300;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/Pretendard-Light.otf") format("opentype");
}
@font-face {
  font-family: "Pretendard";
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/Pretendard-Regular.otf") format("opentype");
}
@font-face {
  font-family: "Pretendard";
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/Pretendard-Medium.otf") format("opentype");
}
@font-face {
  font-family: "Pretendard";
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/Pretendard-SemiBold.otf") format("opentype");
}
@font-face {
  font-family: "Pretendard";
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/Pretendard-Bold.otf") format("opentype");
}

/* ==========================================================================
   Headings
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--fw-regular);
  line-height: var(--lh-tight);
  color: var(--color-black);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); line-height: var(--lh-snug); }
h5 { font-size: var(--fs-h5); line-height: var(--lh-default); }
h6 { font-size: var(--fs-h6); line-height: var(--lh-default); }

/* Heading style helpers */
.heading-h1 {
  font-size: 2.5rem; /* 40 - design uses smaller H1 in hero */
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
}

.heading-h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
}

.heading-h3 {
  font-size: 36px;
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
  font-family: var(--font-kr);
}

.heading-h4 {
  font-size: var(--fs-h4);
  font-weight: var(--fw-regular);
  line-height: var(--lh-snug);
}

.heading-h5 {
  font-size: 1.6rem;
  font-weight: var(--fw-medium);
  line-height: var(--lh-default);
}

.heading-h6 {
  font-size: 18px;
  font-weight: var(--fw-regular);
  line-height: var(--lh-default);
  font-family: var(--font-kr);
}

@media (max-width: 991px) {
  .heading-h1 { font-size: 2rem; }
  .heading-h5 { font-size: 1.4rem; }
}

@media (max-width: 767px) {
  .heading-h1 { font-size: 1.75rem; }
  .heading-h5 { font-size: 1.25rem; }
}

/* ==========================================================================
   Body text helpers
   ========================================================================== */

.text-medium {
  font-size: var(--fs-medium);
  font-weight: var(--fw-regular);
  color: var(--color-text);
  line-height: var(--lh-relaxed);
}

.text-regular {
  font-size: var(--fs-regular);
  font-family: var(--font-kr);
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
}

.text-tiny  { font-size: var(--fs-tiny); }
.text-small { font-size: var(--fs-small); }

/* Weight helpers */
.weight-light    { font-weight: var(--fw-light); }
.weight-regular  { font-weight: var(--fw-regular); }
.weight-medium   { font-weight: var(--fw-medium); }
.weight-semibold { font-weight: var(--fw-semibold); }
.weight-bold     { font-weight: var(--fw-bold); }

/* Alignment helpers */
.text-center { text-align: center; }
.text-left   { text-align: left; }

/* Visibility helpers */
.hide { display: none !important; }
@media (max-width: 991px) {
  .hide-tablet { display: none !important; }
}
@media (max-width: 767px) {
  .hide-mobile-landscape { display: none !important; }
}
@media (max-width: 479px) {
  .hide-mobile { display: none !important; }
}