/* Kobula Studio — design-system/kobula-studio/MASTER.md */

:root {
  --color-bg: #070b14;
  --color-bg-elevated: #0c1220;
  --color-surface: rgba(255, 255, 255, 0.06);
  --color-surface-2: rgba(255, 255, 255, 0.1);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.22);
  --color-text: #f4f7fb;
  --color-text-muted: #9aa3b5;

  --color-glow-orange: #ff7a3d;
  --color-glow-violet: #8b5cf6;
  --color-glow-pink: #f472b6;
  --color-glow-cyan: #22d3ee;
  --color-cta-lime: #a3e635;

  --gradient-cta: linear-gradient(135deg, #f472b6 0%, #ff7a3d 100%);
  --gradient-signup: linear-gradient(135deg, #84cc16 0%, #22c55e 100%);
  --gradient-hero-wash: radial-gradient(
    ellipse 80% 60% at 70% 40%,
    rgba(255, 122, 61, 0.35) 0%,
    rgba(139, 92, 246, 0.25) 45%,
    transparent 70%
  );
  --gradient-feature-purple: linear-gradient(145deg, #6d28d9 0%, #db2777 100%);
  --gradient-feature-lime: linear-gradient(145deg, #65a30d 0%, #eab308 100%);
  --gradient-auth-wash: radial-gradient(ellipse 50% 40% at 30% 50%, rgba(255, 122, 61, 0.28), transparent 55%),
    radial-gradient(ellipse 45% 40% at 75% 55%, rgba(34, 211, 238, 0.22), transparent 50%);

  --color-success: #34d399;
  --color-warning: #fbbf24;
  --color-danger: #f87171;
  --color-focus-ring: rgba(163, 230, 53, 0.45);

  --chart-1: #a3e635;
  --chart-2: #8b5cf6;
  --chart-3: #ff7a3d;
  --chart-4: #22d3ee;

  --glass-blur: 18px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow-auth: 0 0 40px rgba(34, 211, 238, 0.25), 0 0 80px rgba(244, 114, 182, 0.2),
    0 0 100px rgba(255, 122, 61, 0.15);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --gutter: 24px;
  --section-y: 80px;
  --radius-sm: 12px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-h: 68px;
  --content-max: 1160px;

  --duration-fast: 150ms;
  --duration: 220ms;
  --duration-slow: 400ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --font: "Pretendard", "Noto Sans KR", system-ui, sans-serif;
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

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

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--duration) var(--ease-out), box-shadow var(--duration),
    background var(--duration), border-color var(--duration), opacity var(--duration);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-cta {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: 0 8px 24px rgba(244, 114, 182, 0.25);
}

.btn-signup {
  background: var(--gradient-signup);
  color: #0a1a08;
  box-shadow: 0 8px 24px rgba(132, 204, 22, 0.25);
}

.btn-solid {
  background: #fff;
  color: #070b14;
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: var(--color-border-strong);
}

.btn-ghost:hover {
  background: var(--color-surface-2);
}

.btn-sm {
  min-height: 36px;
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* —— Glass —— */
.glass {
  background: var(--color-surface);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.glass-lg {
  border-radius: var(--radius-lg);
}

/* —— Forms —— */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.field label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.field input,
.field select,
.field textarea {
  min-height: 48px;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.35);
  transition: border-color var(--duration), box-shadow var(--duration);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-glow-cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}

.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.field-row a:hover {
  color: var(--color-text);
}

.field-error {
  color: var(--color-danger);
  font-size: 0.85rem;
  min-height: 1.25em;
  margin: 0 0 0.75rem;
}

/* —— Badges —— */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-live {
  background: rgba(163, 230, 53, 0.15);
  color: var(--chart-1);
  box-shadow: 0 0 12px rgba(163, 230, 53, 0.25);
}

.badge-scheduled {
  background: rgba(34, 211, 238, 0.12);
  color: var(--chart-4);
}

.badge-ended {
  background: rgba(154, 163, 181, 0.15);
  color: var(--color-text-muted);
}

.badge-pending {
  background: rgba(251, 191, 36, 0.15);
  color: var(--color-warning);
}

.badge-ok {
  background: rgba(52, 211, 153, 0.15);
  color: var(--color-success);
}

.badge-danger {
  background: rgba(248, 113, 113, 0.15);
  color: var(--color-danger);
}

/* —— Marketing header / footer —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background var(--duration), border-color var(--duration), backdrop-filter var(--duration);
}

.site-header.is-scrolled {
  background: rgba(7, 11, 20, 0.72);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--color-border);
}

.site-header-inner {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: relative;
}

.brand-mark {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.nav-links a:hover {
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-left: auto;
}

.nav-login {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 0.4rem 0.6rem;
}

.nav-login:hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: #fff;
}

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

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

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem var(--gutter) 2rem;
  background: var(--color-bg-elevated);
}

.site-footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 2rem;
}

.site-footer h3 {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.site-footer a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.45rem;
}

.site-footer a:hover {
  color: var(--color-text);
}

.footer-bottom {
  max-width: var(--content-max);
  margin: 2rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.social-row {
  display: flex;
  gap: 0.75rem;
}

.social-row a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: grid;
  place-items: center;
  margin: 0;
  transition:
    transform var(--duration) var(--ease-out),
    border-color var(--duration),
    background var(--duration);
}

.social-row a:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
  background: var(--color-surface-2);
}

.social-row img {
  width: 18px;
  height: 18px;
  opacity: 0.78;
  transition: opacity var(--duration), transform var(--duration) var(--ease-out);
}

.social-row a:hover img {
  opacity: 1;
  transform: scale(1.06);
}

/* —— Tables —— */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.data th,
table.data td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

table.data th {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.78rem;
  white-space: nowrap;
}

table.data tr:hover td {
  background: var(--color-surface-2);
}

table.data tr:last-child td {
  border-bottom: none;
}

/* —— KPI —— */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.kpi-card {
  padding: var(--space-4);
  transition: transform var(--duration) var(--ease-out), border-color var(--duration);
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
}

.kpi-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.kpi-value .won-unit {
  font-size: 0.62em;
  font-weight: 600;
  opacity: 0.85;
}

.kpi-chart {
  margin-top: 0.75rem;
  height: 48px;
  display: flex;
  align-items: flex-end;
  gap: 4px;
}

.kpi-chart span {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: var(--chart-1);
  min-height: 8px;
  opacity: 0.85;
}

.kpi-donut {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  margin-top: 0.75rem;
  background: conic-gradient(var(--chart-2) 0 68%, rgba(255, 255, 255, 0.08) 68% 100%);
}

.kpi-spark {
  margin-top: 0.75rem;
  height: 40px;
  width: 100%;
}

/* —— Toast —— */
.toast-host {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-card);
  font-size: 0.9rem;
  animation: toast-in var(--duration) var(--ease-out);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes glow-breathe {
  0%,
  100% {
    opacity: 0.85;
  }
  50% {
    opacity: 1;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.fade-up {
  animation: fade-up 0.6s var(--ease-out) both;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 900px) {
  .site-footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    transform: none;
    flex-direction: column;
    padding: 1rem var(--gutter);
    background: rgba(7, 11, 20, 0.95);
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links.is-open {
    display: flex;
  }
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .header-actions .btn-signup {
    display: none;
  }
  .site-footer-inner {
    grid-template-columns: 1fr;
  }
}