/* Base */
* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

:root {
  --primary-color: #0ad1c9;
  --primary-dark: #08b5ae;
  --primary-light: #2de8e1;
  --text-color: #1a1a1a;
  --text-light: #666;
  --bg-color: #ffffff;
  --bg-light: #f5f5f5;
  --border-color: rgba(0, 0, 0, 0.08);
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  --transition: all 0.25s ease;
  --gradient-primary: linear-gradient(135deg, #0ad1c9 0%, #08b5ae 100%);
  --gradient-primary-light: linear-gradient(135deg, #2de8e1 0%, #0ad1c9 100%);
  --page-gradient-bg: linear-gradient(
    180deg,
    rgba(10, 209, 201, 0.14) 0%,
    rgba(10, 209, 201, 0.08) 22%,
    rgba(10, 209, 201, 0.03) 56%,
    var(--bg-color) 100%
  );
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  background-image: var(--page-gradient-bg);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.main {
  min-height: calc(100vh - 64px - 76px);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
  color: inherit;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-logo {
  display: block;
  height: 42px;
  width: auto;
  object-fit: contain;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 0 0 4px rgba(10, 209, 201, 0.16);
}

.brand-text {
  font-size: 16px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-link {
  font: inherit;
  background: none;
  border: none;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--text-color);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.nav-link--button {
  -webkit-appearance: none;
  appearance: none;
}

.nav-link--active {
  color: var(--primary-dark);
  background: rgba(10, 209, 201, 0.08);
}

/* By default, show only "login". JS will toggle these after /api/me */
[data-auth="logout"],
[data-auth="admin"] {
  display: none;
}

@media (hover: hover) {
  .nav-link:hover {
    color: var(--primary-dark);
    background: rgba(10, 209, 201, 0.08);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 10px 28px rgba(10, 209, 201, 0.22);
}

@media (hover: hover) {
  .btn-primary:hover {
    background: var(--gradient-primary-light);
    transform: translateY(-1px);
    box-shadow: 0 14px 34px rgba(10, 209, 201, 0.28);
  }
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(10, 209, 201, 0.35);
  color: var(--primary-dark);
}

@media (hover: hover) {
  .btn-ghost:hover {
    background: rgba(10, 209, 201, 0.08);
    border-color: rgba(10, 209, 201, 0.55);
  }
}

/* Landing */
.section {
  padding: clamp(28px, 5vw, 56px) 0;
}

.hero-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(10, 209, 201, 0.16);
  border-radius: 18px;
  padding: clamp(22px, 4.2vw, 44px);
  box-shadow: var(--shadow);
}

.hero-title {
  margin: 0 0 8px;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 0;
  max-width: 60ch;
  color: var(--text-light);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.features {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 16px;
  padding: 14px 14px 16px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset;
}

.feature-title {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.feature-text {
  margin-top: 6px;
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.45;
}

@media (max-width: 880px) {
  .features {
    grid-template-columns: 1fr;
  }
}

/* AI page */
.ai-shell {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(10, 209, 201, 0.14);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.ai-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: linear-gradient(135deg, rgba(10, 209, 201, 0.12) 0%, rgba(255, 255, 255, 0.88) 60%);
}

.ai-title__main {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.ai-title__sub {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 2px;
}

.region-picker {
  display: flex;
  align-items: center;
  gap: 10px;
}

.region-picker__label {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 600;
}

.region-picker__select {
  font: inherit;
  font-weight: 600;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.95);
  outline: none;
  min-width: min(340px, 60vw);
}

.ai-search {
  padding: 18px;
}

.ai-search__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 16px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 28px rgba(10, 209, 201, 0.1);
}

.ai-search__input {
  flex: 1;
  font: inherit;
  padding: 12px 12px;
  border: none;
  outline: none;
  background: transparent;
  font-weight: 600;
}

.ai-search__btn {
  font: inherit;
  font-weight: 800;
  border: none;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: 14px;
  color: #fff;
  background: var(--gradient-primary);
  transition: var(--transition);
}

@media (hover: hover) {
  .ai-search__btn:hover {
    background: var(--gradient-primary-light);
    transform: translateY(-1px);
  }
}

.ai-search__hint {
  margin-top: 10px;
  color: var(--text-light);
  font-size: 13px;
}

.ai-suggestions {
  padding: 0 18px 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  color: #0f172a;
  border: 1px solid rgba(10, 209, 201, 0.22);
  background: rgba(255, 255, 255, 0.85);
  padding: 9px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
}

@media (hover: hover) {
  .chip:hover {
    background: rgba(10, 209, 201, 0.08);
    border-color: rgba(10, 209, 201, 0.45);
    transform: translateY(-1px);
  }
}

.ai-output {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding: 16px 18px 18px;
}

.ai-output__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
}

.ai-output__title {
  font-weight: 900;
  letter-spacing: -0.01em;
}

.ai-output__meta {
  font-size: 12px;
  color: var(--text-light);
}

.ai-output__body {
  margin: 12px 0 0;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(245, 245, 245, 0.75);
  white-space: pre-wrap;
  line-height: 1.55;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New",
    monospace;
  font-size: 13px;
}

@media (max-width: 720px) {
  .nav-menu {
    gap: 8px;
  }
  .nav-link {
    padding: 8px;
  }
  .ai-topbar {
    flex-direction: column;
    align-items: stretch;
  }
  .region-picker {
    justify-content: space-between;
  }
  .region-picker__select {
    min-width: 0;
    width: 100%;
  }
  .ai-search__field {
    flex-direction: column;
    align-items: stretch;
  }
  .ai-search__btn {
    width: 100%;
  }
}

/* Footer */
.footer {
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding-top: 18px;
}

.footer-muted {
  color: var(--text-light);
  font-size: 13px;
}

/* Auth */
.auth-card {
  max-width: 520px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(10, 209, 201, 0.14);
  border-radius: 18px;
  padding: clamp(18px, 3vw, 28px);
  box-shadow: var(--shadow);
}

.auth-title {
  margin: 0 0 6px;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.auth-subtitle {
  margin: 0 0 14px;
  color: var(--text-light);
}

.auth-form {
  display: grid;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

.field-label {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 700;
}

.field-input {
  font: inherit;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  outline: none;
  background: rgba(255, 255, 255, 0.92);
  font-weight: 600;
}

.field-input:focus {
  border-color: rgba(10, 209, 201, 0.6);
  box-shadow: 0 0 0 4px rgba(10, 209, 201, 0.14);
}

.auth-submit {
  width: 100%;
  padding: 12px 16px;
}

.auth-error {
  min-height: 20px;
  color: #b42318;
  font-weight: 700;
  font-size: 13px;
}

.auth-hint {
  margin-top: 12px;
  color: var(--text-light);
  font-size: 13px;
}

/* Admin */
.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 14px;
  align-items: start;
}

.admin-card {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(10, 209, 201, 0.14);
  border-radius: 18px;
  padding: clamp(16px, 2.6vw, 22px);
  box-shadow: var(--shadow);
}

.admin-title {
  margin: 0 0 6px;
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.admin-subtitle {
  margin: 0 0 12px;
  color: var(--text-light);
  font-size: 14px;
}

.admin-form {
  display: grid;
  gap: 12px;
}

.admin-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.admin-error {
  min-height: 20px;
  color: #b42318;
  font-weight: 800;
  font-size: 13px;
}

.admin-ok {
  min-height: 20px;
  color: #067647;
  font-weight: 800;
  font-size: 13px;
}

.admin-users-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.admin-users-title {
  margin: 0;
  font-size: 16px;
  font-weight: 900;
}

.admin-table-wrap {
  overflow: auto;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.7);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  padding: 10px 10px;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  vertical-align: top;
}

.admin-table th {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 900;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: rgba(10, 209, 201, 0.06);
}

.admin-muted {
  color: var(--text-light);
  font-weight: 600;
}

.admin-footnote {
  margin-top: 10px;
  font-size: 12px;
}

.mini-btn {
  font: inherit;
  font-weight: 900;
  font-size: 12px;
  padding: 7px 10px;
  border-radius: 12px;
  border: 1px solid rgba(10, 209, 201, 0.26);
  background: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

@media (hover: hover) {
  .mini-btn:hover {
    background: rgba(10, 209, 201, 0.08);
    transform: translateY(-1px);
  }
}

.mini-btn--danger {
  border-color: rgba(180, 35, 24, 0.25);
}

@media (hover: hover) {
  .mini-btn--danger:hover {
    background: rgba(180, 35, 24, 0.08);
  }
}

@media (max-width: 980px) {
  .admin-grid {
    grid-template-columns: 1fr;
  }
  .admin-row {
    grid-template-columns: 1fr;
  }
}

/* Utility */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}