/* ============================================================
   고객센터(/customerservice) — preview 디자인 시스템 리스킨
   colors_and_type.css 토큰 기반 (preview_nav.css 가 import 함).
   부트스트랩/styles.css 와의 충돌을 피하기 위해 모든 클래스를
   cs- 네임스페이스로 사용한다.
   ⚠️ 문의 폼의 name/id (emailSend, form_need, form_name, form_email,
      form_contact, form_message, imageInput, honeypot, sendEmailBtn,
      loader2) 는 라우트 POST/인라인 JS 와 계약 — 변경 금지.
   ============================================================ */

/* ---------- 페이지 셸 ---------- */
.cs-shell {
  position: relative;
  background: var(--w-cool-99);
  padding: 72px 0 96px;
  overflow: hidden;
}
.cs-shell::before {
  content: ""; position: absolute; top: -260px; right: -180px;
  width: 680px; height: 680px;
  background: radial-gradient(closest-side, rgba(79,55,255,0.13), transparent 70%);
  pointer-events: none;
}
.cs-shell::after {
  content: ""; position: absolute; bottom: -280px; left: -220px;
  width: 600px; height: 600px;
  background: radial-gradient(closest-side, rgba(255,43,176,0.09), transparent 70%);
  pointer-events: none;
}
.cs-container {
  position: relative; z-index: 1;
  width: 100%; max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 히어로 ---------- */
.cs-hero {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.cs-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  height: 28px; padding: 0 12px;
  border-radius: 999px;
  background: var(--bg-accent-subtle);
  color: var(--w-blue-45);
  font: 600 12px/1 var(--font-sans);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.cs-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.cs-eyebrow.cs-eyebrow-dark { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.92); }
.cs-hero h1 {
  margin: 18px 0 0;
  font: 800 clamp(34px, 4.6vw, 52px)/1.14 var(--font-sans);
  letter-spacing: -0.032em;
  color: var(--fg-primary);
  word-break: keep-all;
  text-wrap: balance;
}
.cs-hero-sub {
  margin: 16px auto 0;
  max-width: 560px;
  font: 500 clamp(15.5px, 1.5vw, 17px)/1.6 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
  text-wrap: pretty;
  word-break: keep-all;
}

/* ---------- 지원 채널 카드 3종 ---------- */
.cs-channels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cs-channel {
  display: flex; flex-direction: column;
  background: white;
  border: 1px solid var(--line-neutral-subtle);
  border-radius: 24px;
  padding: 30px 28px 28px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.cs-channel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-strong);
  border-color: transparent;
}
.cs-channel-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid; place-items: center;
  margin-bottom: 20px;
}
.cs-channel-icon svg { width: 24px; height: 24px; display: block; }
.cs-channel.chat .cs-channel-icon { background: var(--bg-accent-subtle); color: var(--w-blue-45); }
.cs-channel.faq  .cs-channel-icon { background: var(--bg-tech-subtle);   color: var(--w-cyan-50); }
.cs-channel.mail .cs-channel-icon { background: var(--bg-energy-subtle); color: var(--w-violet-45); }
.cs-channel h3 {
  margin: 0 0 8px;
  font: 700 20px/1.3 var(--font-sans);
  letter-spacing: -0.02em;
  color: var(--fg-primary);
}
.cs-channel .cs-channel-desc {
  margin: 0 0 20px;
  font: 500 14.5px/1.65 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
  word-break: keep-all;
}
.cs-channel-meta {
  list-style: none;
  margin: auto 0 18px; padding: 14px 0 0;
  border-top: 1px solid var(--line-neutral-subtle);
  display: flex; flex-direction: column; gap: 6px;
}
.cs-channel-meta li {
  display: flex; align-items: center; gap: 8px;
  font: 500 13px/1.5 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
}
.cs-channel-meta .led {
  width: 7px; height: 7px; flex: 0 0 7px;
  border-radius: 50%;
  background: var(--w-green-60);
  box-shadow: 0 0 8px rgba(0,191,64,0.55);
}
.cs-channel-meta .bullet {
  width: 4px; height: 4px; flex: 0 0 4px;
  border-radius: 50%;
  background: var(--fg-neutral-disable);
  margin: 0 1.5px;
}

/* 카드 CTA */
.cs-channel-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%; height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line-neutral);
  border-radius: 12px;
  background: white;
  color: var(--fg-primary);
  font: 700 14.5px/1 var(--font-sans);
  letter-spacing: -0.008em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s ease, border-color .15s ease, color .15s ease,
              box-shadow .15s ease, transform .15s ease;
}
.cs-channel-cta::after {
  content: "→";
  font-size: 16px;
  transition: transform .2s ease;
}
.cs-channel-cta:hover {
  background: var(--w-cool-5);
  border-color: var(--w-cool-5);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(13,14,18,0.16);
}
.cs-channel-cta:hover::after { transform: translateX(3px); }
.cs-channel-cta.primary {
  background: var(--w-blue-50);
  border-color: var(--w-blue-50);
  color: white;
}
.cs-channel-cta.primary:hover {
  background: var(--w-blue-45);
  border-color: var(--w-blue-45);
  box-shadow: 0 10px 24px rgba(79,55,255,0.32);
}

/* ---------- 원격지원 ---------- */
.cs-remote { margin-top: 72px; }
.cs-remote-card {
  background: white;
  border: 1px solid var(--line-neutral-subtle);
  border-radius: 28px;
  overflow: hidden;
}
.cs-remote-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding: 36px 40px 30px;
}
.cs-remote-head .cs-remote-label {
  display: block;
  font: 800 11.5px/1 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--w-blue-50);
  margin-bottom: 12px;
}
.cs-remote-head h2 {
  margin: 0;
  font: 800 clamp(22px, 2.6vw, 28px)/1.25 var(--font-sans);
  letter-spacing: -0.025em;
  color: var(--fg-primary);
}
.cs-remote-head .cs-remote-sub {
  margin: 8px 0 0;
  font: 500 15px/1.6 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
  word-break: keep-all;
}
.cs-remote-dl {
  display: inline-flex; align-items: center; gap: 9px;
  height: 50px; padding: 0 24px;
  border-radius: 12px;
  background: var(--w-cool-5);
  color: white;
  font: 700 15px/1 var(--font-sans);
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}
.cs-remote-dl svg { width: 17px; height: 17px; display: block; }
.cs-remote-dl:hover {
  background: var(--w-cool-15);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(13,14,18,0.22);
}
.cs-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-neutral-subtle);
  border-top: 1px solid var(--line-neutral-subtle);
}
.cs-step { background: white; padding: 28px 32px 34px; }
.cs-step .num {
  font: 800 12.5px/1 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--w-blue-50);
}
.cs-step h4 {
  margin: 14px 0 6px;
  font: 700 17px/1.35 var(--font-sans);
  letter-spacing: -0.015em;
  color: var(--fg-primary);
}
.cs-step p {
  margin: 0;
  font: 500 14px/1.65 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
  word-break: keep-all;
}

/* ---------- 문의 폼 ---------- */
.cs-form-wrap { margin-top: 72px; scroll-margin-top: 84px; }
.cs-form-card {
  display: grid;
  grid-template-columns: 380px 1fr;
  background: white;
  border: 1px solid var(--line-neutral-subtle);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow-emphasize);
}

/* 좌측 다크 패널 */
.cs-form-aside {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--w-cool-5);
  color: white;
  padding: 44px 40px 40px;
  overflow: hidden;
}
.cs-form-aside::before {
  content: ""; position: absolute; top: -160px; right: -160px;
  width: 420px; height: 420px;
  background: radial-gradient(closest-side, rgba(79,55,255,0.38), transparent 70%);
  pointer-events: none;
}
.cs-form-aside::after {
  content: ""; position: absolute; bottom: -180px; left: -140px;
  width: 380px; height: 380px;
  background: radial-gradient(closest-side, rgba(255,43,176,0.20), transparent 70%);
  pointer-events: none;
}
.cs-form-aside > * { position: relative; z-index: 1; }
.cs-form-aside h2 {
  margin: 18px 0 0;
  font: 800 clamp(24px, 2.4vw, 30px)/1.3 var(--font-sans);
  letter-spacing: -0.026em;
  color: white;
  word-break: keep-all;
}
.cs-aside-list {
  list-style: none;
  margin: 32px 0 0; padding: 0;
  display: flex; flex-direction: column; gap: 16px;
}
.cs-aside-list li { display: flex; align-items: center; gap: 12px; }
.cs-aside-list .ic {
  width: 38px; height: 38px; flex: 0 0 38px;
  border-radius: 11px;
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.12);
  display: grid; place-items: center;
  color: rgba(255,255,255,0.9);
}
.cs-aside-list .ic svg { width: 17px; height: 17px; display: block; }
.cs-aside-list .tx {
  display: flex; flex-direction: column; gap: 2px;
  font: 500 14px/1.45 var(--font-sans);
  letter-spacing: -0.005em;
  color: rgba(255,255,255,0.86);
  word-break: keep-all;
}
.cs-aside-list .tx small {
  font: 600 10.5px/1 var(--font-sans);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}
.cs-aside-logo { margin-top: auto; padding-top: 40px; }
.cs-aside-logo img { width: 150px; height: auto; display: block; opacity: 0.85; }

/* 우측 폼 영역 */
.cs-form-main { padding: 44px 44px 40px; }
.cs-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 16px;
}
.cs-field { display: flex; flex-direction: column; min-width: 0; }
.cs-field.full { grid-column: 1 / -1; }
.cs-label {
  display: block;
  margin: 0 0 8px;
  font: 600 13.5px/1.4 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-subtle);
}
.cs-label .req { color: var(--w-blue-50); font-weight: 800; }

.cs-input, .cs-select, .cs-textarea {
  width: 100%; height: 50px;
  padding: 0 16px;
  border: 1px solid var(--line-neutral);
  border-radius: 12px;
  background-color: white;
  font: 500 15px/1.4 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-primary);
  transition: border-color .15s ease, box-shadow .15s ease;
  -webkit-appearance: none; appearance: none;
}
.cs-input::placeholder, .cs-textarea::placeholder { color: var(--fg-neutral-disable); }
.cs-input:focus, .cs-select:focus, .cs-textarea:focus {
  outline: none;
  border-color: var(--w-blue-50);
  box-shadow: 0 0 0 4px rgba(79,55,255,0.12);
}
.cs-select {
  padding-right: 42px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2382858b' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}
.cs-textarea {
  height: auto; min-height: 176px;
  padding: 14px 16px;
  line-height: 1.65;
  resize: vertical;
}
.cs-file {
  width: 100%;
  padding: 9px 10px;
  border: 1px dashed var(--line-neutral-strong);
  border-radius: 12px;
  background: var(--w-cool-99);
  font: 500 13.5px/1.4 var(--font-sans);
  color: var(--fg-neutral-muted);
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease;
}
.cs-file:hover { border-color: var(--w-blue-50); background: var(--w-blue-99); }
.cs-file::file-selector-button {
  margin-right: 12px;
  padding: 7px 14px;
  border: none; border-radius: 8px;
  background: var(--bg-accent-subtle);
  color: var(--w-blue-45);
  font: 700 12.5px/1 var(--font-sans);
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background .15s ease;
}
.cs-file::file-selector-button:hover { background: var(--bg-accent-soft); }

/* 폼 푸터 (필수 안내 + 제출) */
.cs-form-foot {
  grid-column: 1 / -1;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  margin-top: 6px;
}
.cs-form-note {
  margin: 0;
  font: 500 12.5px/1.5 var(--font-sans);
  letter-spacing: -0.005em;
  color: var(--fg-neutral-muted);
}
.cs-form-note .req { color: var(--w-blue-50); font-weight: 800; }
.cs-submit {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 52px; padding: 0 32px;
  border: none; border-radius: 12px;
  background: var(--w-blue-50);
  color: white;
  font: 700 15.5px/1 var(--font-sans);
  letter-spacing: -0.012em;
  cursor: pointer;
  transition: background .15s ease, transform .15s ease, box-shadow .15s ease;
}
.cs-submit:hover {
  background: var(--w-blue-45);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(79,55,255,0.32);
}
.cs-submit:active { transform: translateY(0); box-shadow: none; }
.cs-submit .spinner-border {
  width: 17px; height: 17px;
  border-width: 2px;
  margin: 0;
}

/* ---------- 반응형 ---------- */
@media (max-width: 960px) {
  .cs-channels { grid-template-columns: 1fr; }
  .cs-steps { grid-template-columns: 1fr; }
  .cs-form-card { grid-template-columns: 1fr; }
  .cs-form-aside { padding: 36px 30px; }
  .cs-aside-logo { display: none; }
  .cs-form-main { padding: 32px 26px 30px; }
}
@media (max-width: 720px) {
  .cs-shell { padding: 48px 0 64px; }
  .cs-hero { margin-bottom: 36px; }
  .cs-remote, .cs-form-wrap { margin-top: 48px; }
  .cs-remote-head { padding: 28px 26px 24px; }
  .cs-remote-dl { width: 100%; justify-content: center; }
  .cs-step { padding: 24px 26px 28px; }
  .cs-form-grid { grid-template-columns: 1fr; gap: 16px; }
  .cs-form-foot { flex-direction: column-reverse; align-items: stretch; text-align: center; }
  .cs-submit { width: 100%; }
}