/* Button baseline to prevent size changes */
button,
input[type="submit"],
.btn {
	display: inline-block;
	font-size: 16px;
	line-height: 1.2; /* lock height relation to font */
	padding: 10px 16px; /* fixed padding to keep size stable */
	border-radius: 8px;
	border: none;
	cursor: pointer;
	transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease; /* avoid transform scaling */
}

/* Primary action button (e.g., Add Product) */
.btn-primary,
button[type="submit"],
input[type="submit"] {
	background-color: #8B5E3C; /* warm brown from theme */
	color: #fff;
	box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.btn-primary:hover,
button[type="submit"]:hover,
input[type="submit"]:hover {
	background-color: #7a5336;
}

.btn-primary:active,
button[type="submit"]:active,
input[type="submit"]:active {
	background-color: #6b4a31;
}

.btn-primary:focus,
button[type="submit"]:focus,
input[type="submit"]:focus {
	outline: 2px solid rgba(139,94,60,0.35);
	outline-offset: 2px;
}

/* Prevent layout shift for loading states inside buttons */
button .spinner,
.btn .spinner {
	width: 16px;
	height: 16px;
	display: inline-block;
}

/* Ensure icons/text don't cause wrap that changes height */
button,
.btn {
	white-space: nowrap;
}

/* Prevent flex parents from stretching the submit button height/width */
form button[type="submit"],
form input[type="submit"] {
	flex: 0 0 auto; /* do not grow/shrink */
	align-self: flex-start; /* avoid matching taller sibling height */
	width: auto; /* avoid 100% stretch */
	height: auto; /* keep intrinsic height */
}

/* Image preview sizing should not influence siblings */
#productImagePreview {
	display: block;
	max-width: 200px;
	max-height: 200px;
	width: auto;
	height: auto;
	object-fit: cover;
}
/* Core theme */
:root {
	--bg: #fbf3e6;
	--panel: #fff7ec;
	--surface: #f4e7d7;
	--text: #0f172a;
	--muted: #475569;
	--primary: #8b5e3c;
	--primary-dark: #6b4423;
	--accent: #d97706;
	--border: #e8ddcf;
	--shadow: 0 14px 34px rgba(15, 23, 42, 0.09);
	--radius: 14px;
	--space: 18px;
	--transition: all 160ms ease;
}

* { box-sizing: border-box; }

body {
	margin: 0;
	font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
	background: radial-gradient(circle at 15% 18%, rgba(139,94,60,0.10), transparent 30%),
				radial-gradient(circle at 78% 10%, rgba(217,119,6,0.12), transparent 32%),
			linear-gradient(135deg, #fffaf3 0%, #f9efdf 45%, #fbf3e6 100%);
	color: var(--text);
	line-height: 1.6;
	min-height: 100vh;
	letter-spacing: 0.01em;
}

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

header {
	background: linear-gradient(135deg, var(--primary), var(--accent));
	color: #fff;
	box-shadow: var(--shadow);
	position: sticky;
	top: 0;
	z-index: 10;
}

nav {
	max-width: 1080px;
	margin: 0 auto;
	padding: 16px 20px;
}

nav ul {
	list-style: none;
	display: flex;
	gap: 14px;
	padding: 0;
	margin: 0;
	align-items: center;
}

nav a {
	display: block;
	padding: 10px 14px;
	border-radius: 999px;
	color: #f8fafc;
	font-weight: 600;
	transition: var(--transition);
	border: 1px solid transparent;
}

nav a:hover {
	background: rgba(255,255,255,0.2);
	border-color: rgba(255,255,255,0.45);
	transform: translateY(-1px);
}

main {
	max-width: 1180px;
	margin: 32px auto 72px;
	padding: 0 22px;
	display: grid;
	gap: 22px;
}

section {
	background: var(--panel);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 24px;
	box-shadow: var(--shadow);
	display: flex;
	flex-direction: column;
	gap: 12px;
}

h1, h2, h3 { margin: 0 0 10px; }

p { margin: 6px 0 0; color: var(--muted); }

form {
	display: grid;
	gap: 12px;
	margin-top: 10px;
	grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

label {
	font-weight: 600;
	color: var(--text);
}

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

input, select, textarea {
	padding: 10px 12px;
	border: 1px solid var(--border);
	border-radius: 10px;
	background: #fff;
	transition: var(--transition);
	box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}

textarea {
	grid-column: 1 / -1;
	resize: vertical;
}

input:focus, select:focus, textarea:focus {
	outline: 2px solid rgba(139,94,60,0.25);
	border-color: var(--primary);
	box-shadow: 0 0 0 4px rgba(139,94,60,0.12);
}

button, .btn {
	cursor: pointer;
	padding: 12px 14px;
	border: none;
	border-radius: 12px;
	background: linear-gradient(135deg, var(--accent), var(--primary));
	color: #0f172a;
	font-weight: 700;
	transition: var(--transition);
	letter-spacing: 0.2px;
	box-shadow: var(--shadow);
	display: inline-block;
	text-align: center;
}

button:hover, .btn:hover {
	transform: translateY(-1px);
	box-shadow: 0 12px 26px rgba(139, 94, 60, 0.25);
}

button:active, .btn:active {
	transform: translateY(0);
}

button.secondary, .btn.secondary {
	background: var(--surface);
	color: var(--text);
}

button.small, .btn.small {
	padding: 8px 12px;
	font-size: 0.9em;
}

table {
	width: 100%;
	border-collapse: collapse;
	margin-top: 6px;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	overflow: hidden;
	box-shadow: var(--shadow);
	background: #fff;
}

th, td {
	padding: 12px 14px;
	text-align: left;
}

thead {
	background: linear-gradient(135deg, rgba(139,94,60,0.18), rgba(217,119,6,0.20));
	color: #0f172a;
}

tbody tr:nth-child(odd) { background: #fdfaf6; }
tbody tr:nth-child(even) { background: #f7f1e8; }
tbody tr:hover { background: #f2e7da; }

/* Product Cards */
.product-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
	gap: 18px;
	margin-top: 12px;
}

.product-card {
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 16px;
	box-shadow: var(--shadow);
	transition: var(--transition);
}

.product-card:hover {
	transform: translateY(-3px);
	box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.product-card img {
	width: 100%;
	height: 180px;
	object-fit: cover;
	border-radius: 10px;
	margin-bottom: 12px;
}

.product-card h3 {
	margin: 8px 0 4px;
	font-size: 1.2em;
}

.product-card .category {
	color: var(--accent);
	font-weight: 600;
	font-size: 0.9em;
}

.product-card .location, .product-card .farmer {
	font-size: 0.9em;
	color: var(--muted);
}

/* Product Detail Layout */
.product-detail-layout {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 24px;
}

.product-image-section img {
	width: 100%;
	border-radius: var(--radius);
	box-shadow: var(--shadow);
}

.product-info-section {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.product-info-section .price {
	font-size: 1.5em;
	font-weight: 700;
	color: var(--primary);
}

.farmer-info {
	background: var(--surface);
	padding: 12px;
	border-radius: 8px;
	border: 1px solid var(--border);
}

/* Status badges */
.status {
	padding: 4px 10px;
	border-radius: 999px;
	font-size: 0.85em;
	font-weight: 600;
	text-transform: capitalize;
}

.status.pending { background: #fef3c7; color: #92400e; }
.status.approved { background: #d1fae5; color: #065f46; }
.status.declined { background: #fee2e2; color: #991b1b; }
.status.in-transit { background: #dbeafe; color: #1e40af; }
.status.completed { background: #d1fae5; color: #065f46; }

/* Auth Section */
.hero {
	text-align: center;
}

.auth-section {
	max-width: 450px;
	margin: 24px auto;
}

.auth-toggle {
	display: flex;
	gap: 8px;
	margin-bottom: 18px;
}

.tab-btn {
	flex: 1;
	padding: 10px;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 8px;
	cursor: pointer;
	font-weight: 600;
}

.tab-btn.active {
	background: var(--primary);
	color: #fff;
}

.auth-form {
	display: none;
	flex-direction: column;
	gap: 12px;
}

.auth-form.active {
	display: flex;
}

.user-welcome {
	text-align: center;
	max-width: 600px;
	margin: 24px auto;
}

.action-buttons {
	display: flex;
	gap: 12px;
	justify-content: center;
	flex-wrap: wrap;
	margin-top: 18px;
}

/* Features */
.features {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
	gap: 18px;
}

.feature-card {
	background: #fff;
	padding: 18px;
	border-radius: var(--radius);
	border: 1px solid var(--border);
	box-shadow: var(--shadow);
}

.feature-card h3 {
	font-size: 1.1em;
	margin-bottom: 8px;
}

/* Messaging Layout */
.messaging-layout {
	display: grid;
	grid-template-columns: 300px 1fr;
	gap: 18px;
	min-height: 500px;
}

.conversations-panel {
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 12px;
	overflow-y: auto;
}

.conversation-item {
	padding: 12px;
	border-radius: 8px;
	cursor: pointer;
	border: 1px solid transparent;
	margin-bottom: 8px;
	transition: var(--transition);
}

.conversation-item:hover {
	background: var(--surface);
	border-color: var(--border);
}

.conversation-item.active {
	background: var(--primary);
	color: #fff;
}

.conversation-item h3 {
	margin: 0 0 4px;
	font-size: 1em;
}

.conversation-item .last-message {
	font-size: 0.85em;
	opacity: 0.8;
	margin: 0;
}

.conversation-item .time {
	font-size: 0.75em;
	opacity: 0.7;
}

.chat-panel {
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius);
	display: flex;
	flex-direction: column;
}

#chatHeader {
	padding: 16px;
	border-bottom: 1px solid var(--border);
	background: var(--surface);
}

#chatHeader h2 {
	margin: 0;
	font-size: 1.2em;
}

#chatHeader p {
	margin: 4px 0 0;
	font-size: 0.9em;
}

#chatMessages {
	flex: 1;
	padding: 18px;
	overflow-y: auto;
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.message {
	max-width: 70%;
	padding: 10px 14px;
	border-radius: 12px;
	position: relative;
}

.message.sent {
	align-self: flex-end;
	background: var(--primary);
	color: #fff;
}

.message.received {
	align-self: flex-start;
	background: var(--surface);
	color: var(--text);
}

.message p {
	margin: 0;
	color: inherit;
}

.message .time {
	font-size: 0.7em;
	opacity: 0.7;
	margin-top: 4px;
	display: block;
}

#chatForm {
	padding: 14px;
	border-top: 1px solid var(--border);
	display: flex;
	gap: 8px;
}

#chatForm input {
	flex: 1;
}

#chatPlaceholder {
	flex: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--muted);
}

.empty-state {
	text-align: center;
	color: var(--muted);
	padding: 24px;
}

.search-bar {
	display: flex;
	gap: 8px;
	margin-bottom: 16px;
}

.search-bar input {
	flex: 1;
}

@media (max-width: 768px) {
	nav ul { flex-wrap: wrap; }
	nav { padding: 14px 16px; }
	main { margin-top: 18px; padding: 0 16px; }
	section { padding: 18px; }
	.product-detail-layout { grid-template-columns: 1fr; }
	.messaging-layout { grid-template-columns: 1fr; }
	.conversations-panel { max-height: 200px; }
}