:root {
  --color-forest: #142a12;
  --color-grass-600: #2d5a27;
  --color-grass-500: #3c7a34;
  --color-grass-400: #4e9a44;
  --color-grass-50: #f4f9f2;
  --color-wood: #8b5a2b;
  --color-accent: #c4823f;
  --color-bg: #f8faf7;
  --color-card-bg: #ffffff;
  --color-border: #e2e8df;
  --color-text-main: #1c261b;
  --color-text-muted: #5c6b5a;
  --color-danger: #d32f2f;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 6px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
}

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

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  min-height: 100vh;
  line-height: 1.5;
}

/* Header */
.admin-header {
  background: var(--color-forest);
  color: #fff;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--color-grass-500);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 18px;
}

.brand span {
  color: #9fe28d;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-grass-500);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-grass-600);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
}

.btn-danger {
  background: #ffebee;
  color: var(--color-danger);
  border: 1px solid #ffcdd2;
}
.btn-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* Layout */
.admin-container {
  max-width: 1280px;
  margin: 32px auto;
  padding: 0 20px;
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 10px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 24px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--color-grass-600);
}

.tab-btn.active {
  color: var(--color-grass-600);
  border-bottom-color: var(--color-grass-500);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards & Sections */
.admin-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-forest);
  margin-bottom: 6px;
}

input[type="text"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-family: inherit;
  transition: border-color 0.2s;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-grass-500);
  box-shadow: 0 0 0 3px rgba(60, 122, 52, 0.15);
}

textarea {
  min-height: 90px;
  resize: vertical;
}

/* Upload dropzone */
.dropzone {
  border: 2px dashed var(--color-grass-400);
  background: var(--color-grass-50);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s;
}
.dropzone:hover {
  background: #eaf4e7;
}

.preview-thumbnail {
  max-width: 120px;
  max-height: 120px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

/* Models Grid */
.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.model-card-item {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.model-img-wrap {
  position: relative;
  height: 200px;
  background: #eee;
  overflow: hidden;
}

.model-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.model-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(20, 42, 18, 0.85);
  color: #fff;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  border-radius: 20px;
}

.model-info {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.model-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.model-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.model-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.model-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-grass-600);
}

.model-actions {
  display: flex;
  gap: 8px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--color-forest);
  color: #fff;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast.success {
  background: var(--color-grass-600);
}
.toast.error {
  background: var(--color-danger);
}

/* Modal Login */
.login-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}
.login-box {
  background: #fff;
  padding: 32px;
  border-radius: var(--radius-lg);
  max-width: 420px;
  width: 90%;
  box-shadow: var(--shadow-md);
  text-align: center;
}
.login-box h2 {
  margin-bottom: 8px;
  color: var(--color-forest);
}
.login-box p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: 24px;
}