/* Flicewa — coastal field-notes theme for UX research education */
:root {
  --ink: #1c2a33;
  --ink-soft: #3a4d59;
  --mist: #d9e4ea;
  --foam: #f3f7f9;
  --paper: #eef4f6;
  --sea: #2f6f6a;
  --sea-deep: #245853;
  --sand: #c4a574;
  --line: rgba(28, 42, 51, 0.12);
  --shadow: 0 18px 40px rgba(28, 42, 51, 0.08);
  --radius: 4px;
  --font-display: "Hahmlet", "Song Myung", serif;
  --font-body: "IBM Plex Sans KR", "Noto Sans KR", sans-serif;
  --max: 1120px;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(47, 111, 106, 0.12), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(196, 165, 116, 0.14), transparent 55%),
    linear-gradient(180deg, var(--foam) 0%, var(--paper) 45%, #e7eef2 100%);
  line-height: 1.7;
  min-height: 100vh;
}

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

a {
  color: var(--sea-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--sea);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink);
}

p {
  margin: 0 0 1rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 0.85rem;
  z-index: 1000;
}

.skip-link:focus {
  top: 0.75rem;
}

.inline-error {
  margin: 0;
  padding: 0.85rem 1.1rem;
  background: #f7e4e1;
  color: #6d2d24;
  border-bottom: 1px solid #e5c4bd;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(243, 247, 249, 0.88);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50% 50% 40% 60%;
  background: linear-gradient(145deg, var(--sea) 0%, #6ea39a 55%, var(--sand) 100%);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--sea);
}

.site-nav .nav-cta {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--sea);
  color: var(--sea-deep);
  border-bottom: 1px solid var(--sea);
}

.site-nav .nav-cta:hover {
  background: var(--sea);
  color: #fff;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  cursor: pointer;
  position: relative;
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--ink);
  margin: 0 auto;
  position: relative;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-bar::before {
  top: -6px;
}

.nav-toggle-bar::after {
  top: 6px;
}

/* Layout helpers */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4.5rem 0;
}

.section-tight {
  padding: 3rem 0;
}

.section-label {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sea);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.lead {
  font-size: 1.125rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--sea);
  color: #fff;
}

.btn-primary:hover {
  background: var(--sea-deep);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--sea);
  color: var(--sea-deep);
}

.btn-sand {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}

.btn-sand:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

/* Hero — full-bleed field photo */
.hero-bleed {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  align-items: end;
  color: #fff;
  overflow: hidden;
}

.hero-bleed::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(16, 28, 34, 0.25) 0%, rgba(16, 28, 34, 0.72) 70%, rgba(16, 28, 34, 0.88) 100%),
    var(--hero-image) center/cover no-repeat;
  animation: hero-pan 18s ease-in-out infinite alternate;
  transform: scale(1.05);
}

.hero-bleed-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 1.25rem 3.5rem;
  width: 100%;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 700;
  margin: 0 0 0.85rem;
  letter-spacing: -0.04em;
  line-height: 1.05;
  animation: rise-in 0.9s ease both;
}

.hero-line {
  max-width: 28rem;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.5rem;
  animation: rise-in 0.9s ease 0.15s both;
}

.hero-actions {
  animation: rise-in 0.9s ease 0.28s both;
}

.hero-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0;
  min-height: min(82vh, 700px);
  background: var(--ink);
  color: #fff;
  overflow: hidden;
}

.hero-split-copy {
  padding: clamp(2rem, 5vw, 4.5rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background:
    linear-gradient(160deg, #243743 0%, #1c2a33 55%, #16312e 100%);
}

.hero-split-copy .hero-brand {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
}

.hero-split-media {
  min-height: 280px;
  background: var(--hero-image) center/cover no-repeat;
  animation: soft-zoom 14s ease-in-out infinite alternate;
}

.page-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(47, 111, 106, 0.08), transparent 50%),
    var(--foam);
}

.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  margin: 0 0 0.75rem;
}

.page-hero p {
  color: var(--ink-soft);
  max-width: 40rem;
  margin: 0;
}

/* Proof strip — early social proof */
.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-item {
  background: rgba(255, 255, 255, 0.55);
  padding: 1.35rem 1.25rem;
  text-align: center;
}

.proof-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.65rem;
  color: var(--sea-deep);
}

.proof-item span {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* Course grid */
.course-grid,
.blog-grid,
.tier-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.media-tile {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease;
}

.media-tile:hover {
  transform: translateY(-4px);
}

.media-tile figure {
  margin: 0;
  overflow: hidden;
}

.media-tile img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.media-tile:hover img {
  transform: scale(1.04);
}

.media-tile h3 {
  margin: 0.9rem 0 0.35rem;
  font-size: 1.2rem;
}

.media-tile p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
}

.meta {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}

/* Benefits — not cards; open list */
.benefit-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 3rem;
  margin-top: 2rem;
}

.benefit-list article h3 {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
}

.benefit-list article p {
  color: var(--ink-soft);
  margin: 0;
}

/* Quote block */
.quote-panel {
  background: linear-gradient(135deg, rgba(47, 111, 106, 0.1), rgba(196, 165, 116, 0.12));
  border-left: 3px solid var(--sea);
  padding: 2rem 1.75rem;
  margin: 0;
}

.quote-panel blockquote {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.45;
}

.quote-panel cite {
  font-style: normal;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

/* Pricing */
.tier {
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
}

.tier-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 0.35rem;
}

.tier-price {
  font-size: 1.85rem;
  font-family: var(--font-display);
  color: var(--sea-deep);
  margin: 0 0 0.75rem;
}

.tier-price small {
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-family: var(--font-body);
}

.tier ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.tier-featured {
  background: rgba(47, 111, 106, 0.06);
  margin: 0 -1.25rem;
  padding: 1.75rem 1.25rem;
  border-top: 2px solid var(--sea);
}

/* Forms */
.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: start;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid rgba(47, 111, 106, 0.35);
  border-color: var(--sea);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.field-error {
  display: block;
  min-height: 1.2em;
  color: #8a3a30;
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.form-status {
  margin-top: 1rem;
  min-height: 1.4em;
}

.form-status.is-success {
  color: var(--sea-deep);
}

.form-status.is-error {
  color: #8a3a30;
}

.contact-aside {
  padding-top: 0.5rem;
}

.contact-aside h2 {
  margin-top: 0;
  font-size: 1.35rem;
}

.contact-aside address {
  font-style: normal;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

/* Article / prose */
.prose {
  max-width: 42rem;
}

.prose h2 {
  margin-top: 2.25rem;
  font-size: 1.55rem;
}

.prose h3 {
  margin-top: 1.5rem;
  font-size: 1.2rem;
}

.prose ul,
.prose ol {
  padding-left: 1.2rem;
  color: var(--ink-soft);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1.25rem 0;
}

.prose th,
.prose td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: rgba(47, 111, 106, 0.08);
}

.module-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.module-list li {
  padding: 1.1rem 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1rem;
}

.module-num {
  font-family: var(--font-display);
  color: var(--sea);
  font-size: 1.2rem;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  font-weight: 500;
}

.faq details p {
  color: var(--ink-soft);
  margin: 0.65rem 0 0;
}

.instructor {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.25rem;
  align-items: center;
  margin-top: 1.5rem;
}

.instructor img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
}

.review-list {
  display: grid;
  gap: 2rem;
}

.review-item {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.review-item .rating {
  color: var(--sand);
  letter-spacing: 0.08em;
  font-size: 0.9rem;
}

.case-study {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--sea);
}

.cta-band {
  margin: 2rem 0 0;
  padding: 3rem 1.5rem;
  background:
    linear-gradient(120deg, rgba(36, 88, 83, 0.95), rgba(47, 111, 106, 0.88)),
    url("https://images.unsplash.com/photo-1586717791821-3f44a563fa4c?auto=format&fit=crop&w=1400&q=80") center/cover;
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
  margin: 0 0 0.5rem;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.88);
  max-width: 32rem;
  margin: 0 auto 1.25rem;
}

/* Footer */
.site-footer {
  margin-top: 4rem;
  background: #162229;
  color: rgba(255, 255, 255, 0.82);
  padding: 3.5rem 0 2rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: #fff;
  margin: 0 0 0.5rem;
}

.footer-tag {
  color: rgba(255, 255, 255, 0.65);
  max-width: 22rem;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 2.5rem 0;
}

.footer-heading {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a,
.site-footer a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
}

.footer-links a:hover,
.site-footer a:hover {
  color: #fff;
}

.footer-links li {
  margin-bottom: 0.4rem;
}

.footer-address {
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.65);
}

.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.25rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 200;
  max-width: 640px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  animation: rise-in 0.45s ease both;
}

.cookie-banner-inner {
  padding: 1.15rem 1.25rem;
  display: grid;
  gap: 1rem;
}

.cookie-banner-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.35rem;
}

.cookie-banner-copy p:last-child {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.cookie-banner-actions {
  display: flex;
  gap: 0.65rem;
  justify-content: flex-end;
}

/* 404 */
.error-page {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 1.25rem;
}

.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  margin: 0 0 0.5rem;
  color: var(--sea);
}

/* Animations */
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hero-pan {
  from {
    transform: scale(1.05) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.1) translate3d(-1.5%, -1%, 0);
  }
}

@keyframes soft-zoom {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.06);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 900px) {
  .hero-split,
  .contact-layout,
  .course-grid,
  .blog-grid,
  .tier-grid,
  .card-grid,
  .benefit-list,
  .footer-cols,
  .proof-strip {
    grid-template-columns: 1fr;
  }

  .instructor {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(243, 247, 249, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 1rem 1.25rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-header {
    position: sticky;
  }

  .header-inner {
    position: relative;
  }
}