/* 3D UniBox — Dark Premium B2B */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700;900&family=Bebas+Neue&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Brand — Pure Black baseline (모든 표면 검정 + 보더로 구분) */
  --navy-950: #000000;          /* body 배경 */
  --navy-900: #000000;          /* 사이드바/푸터 / TopNav 보조 표면 */
  --navy-800: #000000;          /* 카드 베이스 */
  --navy-700: #0F0F0F;          /* hover / 활성 표면 (살짝 변화) */
  --navy-600: #161616;
  --navy-500: #1F1F1F;
  --cyan-400: #00C8F0;
  --cyan-500: #00A8D0;
  --cyan-300: #5BDDF5;
  --cyan-glow: rgba(0, 200, 240, 0.30);
  /* Logo accent — 당근 시그니처 오렌지 (실제 픽셀 추출 #FF7E36) */
  --orange-500: #FF7E36;
  --orange-400: #FF9357;
  --orange-glow: rgba(255, 126, 54, 0.35);
  --white: #FFFFFF;
  --gray-100: #EDEDED;
  --gray-200: #C9C9C9;
  --gray-300: #A0A0A0;
  --gray-400: #707070;
  --gray-500: #4A4A4A;
  --gray-600: #2A2A2A;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --success: #4ADE80;
  --warning: #FBBF24;

  /* Type */
  --font-kr: 'Noto Sans KR', system-ui, sans-serif;
  --font-display: 'Bebas Neue', 'Noto Sans KR', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-kr);
  background: #08111E;
  color: var(--gray-100);
  -webkit-font-smoothing: antialiased;
}

/* === ARTBOARD BASE === */
.ub-screen {
  width: 100%;
  height: 100%;
  background: var(--navy-950);
  color: var(--gray-100);
  position: relative;
  overflow: hidden;
  font-family: var(--font-kr);
  display: flex;
  flex-direction: column;
}

.ub-screen.desktop { font-size: 14px; }
.ub-screen.mobile { font-size: 14px; }

/* === TOP BAR (desktop) === */
.ub-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  flex-shrink: 0;
}
.ub-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--white);
}
.ub-logo-mark {
  width: 28px; height: 28px;
  background: #FF7E36;
  border-radius: 6px;
  position: relative;
  display: grid; place-items: center;
  color: #FFFFFF;
  font-weight: 900;
  font-family: var(--font-display);
  font-size: 14px;
}
.ub-logo-mark::after {
  content: ""; position: absolute; inset: 0;
  border-radius: 6px;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.10) inset;
}
.ub-nav {
  display: flex; gap: 28px;
  font-size: 13px;
  color: var(--gray-200);
}
.ub-nav span { cursor: pointer; }
.ub-nav .active { color: var(--cyan-400); }
.ub-cta-mini {
  font-size: 12px;
  padding: 8px 14px;
  border-radius: 6px;
  background: var(--cyan-400);
  color: var(--navy-950);
  font-weight: 700;
  cursor: pointer;
}

/* === BUTTONS === */
.ub-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  border: none;
  font-family: var(--font-kr);
  transition: all 0.15s;
}
.ub-btn-primary {
  background: var(--cyan-400);
  color: var(--navy-950);
  box-shadow: 0 6px 24px -4px var(--cyan-glow);
}
.ub-btn-primary:hover { background: var(--cyan-300); }
.ub-btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--line-strong);
}
.ub-btn-ghost:hover { background: rgba(255,255,255,0.04); }
.ub-btn-lg { padding: 16px 28px; font-size: 15px; }

/* === CARDS (당근 스타일 미니멀) === */
.ub-card {
  background: var(--navy-800);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
}
.ub-card-product {
  background: var(--navy-800);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  cursor: pointer;
  transition: all 0.18s ease;
  position: relative;
}
.ub-card-product:hover {
  background: var(--navy-700);
  border-color: rgba(0,200,240,0.35);
  transform: translateY(-2px);
}

/* === BADGES === */
.ub-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.ub-badge-live {
  background: rgba(74, 222, 128, 0.12);
  color: var(--success);
  border: 1px solid rgba(74, 222, 128, 0.3);
}
.ub-badge-soon {
  background: rgba(251, 191, 36, 0.1);
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.25);
}
.ub-badge-cyan {
  background: rgba(0, 200, 240, 0.12);
  color: var(--cyan-400);
  border: 1px solid rgba(0, 200, 240, 0.3);
}
.ub-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* === SECTION HEADERS === */
.ub-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
  text-transform: uppercase;
  font-weight: 600;
}
.ub-h1 {
  font-family: var(--font-kr);
  font-weight: 900;
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 0;
}
.ub-h2 {
  font-family: var(--font-kr);
  font-weight: 800;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--white);
  margin: 0;
}
.ub-h3 {
  font-family: var(--font-kr);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  color: var(--white);
  margin: 0;
}
.ub-display {
  font-family: var(--font-display);
  font-size: 96px;
  line-height: 0.9;
  letter-spacing: 0.01em;
  color: var(--white);
}
.ub-mono { font-family: var(--font-mono); }
.ub-spec-key {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.ub-spec-val {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--white);
}

/* === GRID BG === */
.ub-grid-bg {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
}
.ub-radial-cyan {
  background: radial-gradient(ellipse 600px 400px at 80% 20%, rgba(0, 200, 240, 0.15), transparent 60%);
}

/* === DEVICE / BRACKET ILLUSTRATION === */
.ub-device {
  background: linear-gradient(160deg, #1a2940, #0d1828);
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  position: relative;
  overflow: hidden;
}
.ub-device::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(0,200,240,0.12), transparent 50%);
}
.ub-device-screen {
  position: absolute;
  background: linear-gradient(180deg, #0a1220, #050a14);
  border: 1px solid rgba(0,200,240,0.2);
  border-radius: 4px;
}

/* === TABS === */
.ub-tabs {
  display: flex; gap: 4px;
  border-bottom: 1px solid var(--line);
}
.ub-tab {
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-300);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
}
.ub-tab.active {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}
.ub-tab:hover:not(.active) { color: var(--gray-100); }

/* === FORMS === */
.ub-input, .ub-select, .ub-textarea {
  width: 100%;
  background: var(--navy-900);
  border: 1px solid var(--line);
  color: var(--white);
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-family: var(--font-kr);
  outline: none;
}
.ub-input:focus, .ub-select:focus, .ub-textarea:focus {
  border-color: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(0,200,240,0.1);
}
.ub-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-200);
  margin-bottom: 8px;
}
.ub-label-req::after {
  content: "*";
  color: var(--cyan-400);
  margin-left: 4px;
}

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }

/* === DEVICE FRAME (mobile) === */
.ub-mobile-statusbar {
  height: 44px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--white);
  font-weight: 600;
  flex-shrink: 0;
}
.ub-mobile-tabbar {
  height: 64px;
  border-top: 1px solid var(--line);
  background: rgba(10, 22, 40, 0.95);
  display: flex; align-items: center; justify-content: space-around;
  flex-shrink: 0;
}
.ub-tabbar-item {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  font-size: 10px;
  color: var(--gray-400);
}
.ub-tabbar-item.active { color: var(--cyan-400); }

/* === STEP DOTS === */
.ub-stepper {
  display: flex; align-items: center; gap: 8px;
}
.ub-step-dot {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  color: var(--gray-300);
}
.ub-step-dot.done { background: var(--cyan-400); color: var(--navy-950); border-color: var(--cyan-400); }
.ub-step-dot.active { border-color: var(--cyan-400); color: var(--cyan-400); box-shadow: 0 0 0 4px rgba(0,200,240,0.1); }
.ub-step-line { flex: 1; height: 1px; background: var(--line-strong); }
.ub-step-line.done { background: var(--cyan-400); }

/* === Wall texture illustrations === */
.wall-glass {
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,0.04) 0 8px, transparent 8px 16px),
    linear-gradient(160deg, rgba(0,200,240,0.08), rgba(0,200,240,0.02));
  border: 1px solid rgba(0,200,240,0.25);
}
.wall-concrete {
  background:
    radial-gradient(circle at 30% 40%, rgba(255,255,255,0.04) 0 8px, transparent 9px),
    radial-gradient(circle at 70% 60%, rgba(255,255,255,0.03) 0 6px, transparent 7px),
    radial-gradient(circle at 50% 80%, rgba(255,255,255,0.04) 0 10px, transparent 11px),
    linear-gradient(160deg, #2a3441, #1a2230);
  border: 1px solid rgba(255,255,255,0.1);
}
.wall-mixed {
  background:
    linear-gradient(90deg, rgba(0,200,240,0.06) 0 50%, rgba(255,255,255,0.03) 50%);
  border: 1px solid var(--line-strong);
}

/* utility */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.grow { flex: 1; }
.text-cyan { color: var(--cyan-400); }
.text-gray { color: var(--gray-300); }
.text-mono { font-family: var(--font-mono); }

/* cart drawer */
.ub-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 240ms ease;
  z-index: 100;
}
.ub-drawer-overlay.is-open { opacity: 1; }

.ub-drawer-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 420px;
  max-width: 100vw;
  background: var(--navy-950);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 280ms cubic-bezier(0.2, 0.7, 0.2, 1);
  z-index: 101;
  outline: none;
}
.ub-drawer-panel.is-open { transform: translateX(0); }

.ub-drawer-iconbtn {
  background: transparent;
  border: 0;
  padding: 4px;
  color: var(--gray-300);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}
.ub-drawer-iconbtn:hover { color: var(--white); background: rgba(255,255,255,0.05); }
.ub-drawer-iconbtn:focus-visible { outline: 2px solid var(--cyan-400); outline-offset: 2px; }

.ub-qty-group {
  display: flex;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  overflow: hidden;
}
.ub-qty-btn {
  background: transparent;
  border: 0;
  padding: 4px 10px;
  color: var(--gray-200);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
}
.ub-qty-btn:hover { background: rgba(255,255,255,0.05); color: var(--white); }
.ub-qty-btn:focus-visible { outline: 2px solid var(--cyan-400); outline-offset: -2px; }
.ub-qty-btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.ub-qty-divider { border-left: 1px solid var(--line-strong); }

.ub-drawer-footer { padding: 24px; border-top: 1px solid var(--line); }
.ub-drawer-body { flex: 1; overflow: auto; padding: 24px; }

@media (max-width: 480px) {
  .ub-drawer-panel { width: 100vw; border-left: none; }
  .ub-drawer-footer { padding: 16px; }
  .ub-drawer-body { padding: 16px; }
}

/* mobile baseline */
@media (max-width: 1024px) {
  .ub-topbar { padding: 12px 16px !important; }
  .ub-h2 { font-size: clamp(22px, 6vw, 28px) !important; line-height: 1.2 !important; word-break: keep-all; }
  .ub-card { padding: 16px !important; border-radius: 12px !important; }
  .ub-card-product { padding: 12px !important; border-radius: 10px !important; }
  .ub-card-product .ub-mono { font-size: 9px !important; }
  table { font-size: 11px !important; }
  table th, table td { padding: 10px 8px !important; }
  /* 하단 탭바 가림 방지 — body 하단 패딩 확보 */
  body { padding-bottom: calc(64px + env(safe-area-inset-bottom)) !important; }
  footer { margin-bottom: 0 !important; }
}

/* 하단 모바일 탭바 (당근 마켓 스타일) */
.ub-bottom-tabs {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 90;
}
.ub-bottom-tab {
  background: transparent;
  border: 0;
  padding: 10px 6px 8px;
  color: var(--gray-300);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
  transition: color 0.15s;
}
.ub-bottom-tab.active { color: var(--cyan-400); font-weight: 700; }
.ub-bottom-tab .dot {
  position: absolute; top: 4px; right: calc(50% - 18px);
  min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 100px; background: var(--cyan-400); color: var(--navy-950);
  font-size: 9px; font-weight: 700; font-family: var(--font-mono);
  display: grid; place-items: center;
}