/* ─── Variables & Reset ─────────────────────────────────────────────────── */

:root {
  --color-bg:           #f7f5f2;
  --color-surface:      #ffffff;
  --color-surface-2:    #f0ede8;
  --color-primary:      #c8956c;
  --color-primary-dark: #a67452;
  --color-primary-light:#fdf0e6;
  --color-text:         #1a1714;
  --color-muted:        #6b6560;
  --color-border:       #e5e0da;
  --color-error:        #d94f4f;

  --radius-sm: 8px;
  --radius:    12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
  --shadow:    0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.10);

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ─── Header ────────────────────────────────────────────────────────────── */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 242, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 28px;
  height: 28px;
}

.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.3px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 150ms var(--ease-out), background 150ms var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* ─── Main Layout ───────────────────────────────────────────────────────── */

.app-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ─── Page title ─────────────────────────────────────────────────────────── */

.page-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--color-text);
}

.page-subtitle {
  font-size: 15px;
  color: var(--color-muted);
  margin-top: 4px;
}

/* ─── Home View ─────────────────────────────────────────────────────────── */

.home-header {
  margin-bottom: 28px;
}

.search-bar-wrap {
  margin-bottom: 16px;
}

.search-input {
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  outline: none;
  transition: border-color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 149, 108, 0.15);
}

.search-input::placeholder {
  color: var(--color-muted);
  opacity: 0.7;
}

/* ─── Filter Chips ───────────────────────────────────────────────────────── */

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.filter-chip {
  padding: 6px 14px;
  border-radius: 100px;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 150ms var(--ease-out),
              color 150ms var(--ease-out),
              background 150ms var(--ease-out),
              transform 120ms var(--ease-out);
}

.filter-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.filter-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.filter-chip:active {
  transform: scale(0.97);
}

/* ─── Combo Grid ─────────────────────────────────────────────────────────── */

.combo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

/* ─── Empty State ────────────────────────────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 80px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.empty-icon {
  font-size: 48px;
  opacity: 0.4;
}

.empty-text {
  color: var(--color-muted);
  font-size: 16px;
}

/* ─── Detail View ────────────────────────────────────────────────────────── */

.detail-view {
  max-width: 680px;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  margin-bottom: 24px;
}

.detail-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.detail-header {
  padding: 28px 28px 24px;
  border-bottom: 1px solid var(--color-border);
}

.detail-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.detail-desc {
  color: var(--color-muted);
  margin-top: 6px;
  font-size: 14px;
}

.detail-table-wrap {
  padding: 0;
}

/* ─── Create View ────────────────────────────────────────────────────────── */

.create-view {
  max-width: 600px;
}

.create-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  padding: 32px;
}

.create-card .page-title {
  margin-bottom: 28px;
  font-size: 22px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 7px;
  letter-spacing: 0.1px;
}

.optional {
  font-weight: 400;
  color: var(--color-muted);
}

.input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  outline: none;
  transition: border-color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
  appearance: none;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200, 149, 108, 0.15);
}

.input::placeholder {
  color: var(--color-muted);
  opacity: 0.6;
}

.textarea {
  resize: vertical;
  min-height: 72px;
}

select.input {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6560' stroke-width='1.5' stroke-linecap='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-error {
  color: var(--color-error);
  font-size: 13px;
  margin-bottom: 16px;
  min-height: 18px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
  .app-main {
    padding: 24px 16px 60px;
  }

  .header-inner {
    padding: 0 16px;
  }

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

  .create-card {
    padding: 20px 16px;
  }

  .detail-header {
    padding: 20px 16px;
  }
}