/**
 * DGA Contact Form — Frontend Styles
 * Theme: DGA orange (#F47B20) + DGA navy (#00529C)
 * Accessibility: WCAG 2.2 AA contrast, focus rings, reduced-motion friendly.
 */

.dga-cf {
	/* DGA brand tokens */
	--dga-orange: #F47B20;
	--dga-orange-dark: #D9651A;
	--dga-orange-light: #FFF4E6;
	--dga-blue: #00529C;
	--dga-blue-dark: #003366;
	--dga-blue-light: #E8F0FA;

	/* Neutrals */
	--dga-text: #1a1a1a;
	--dga-text-soft: #4a5568;
	--dga-border: #d1d9e6;
	--dga-border-focus: var(--dga-orange);
	--dga-bg: #ffffff;
	--dga-bg-soft: #f7f9fc;
	--dga-error: #c0392b;
	--dga-success: #2f855a;

	/* Spacing & radii */
	--dga-radius: 8px;
	--dga-radius-lg: 14px;
	--dga-shadow: 0 4px 16px rgba(0, 51, 102, 0.06), 0 1px 2px rgba(0, 51, 102, 0.04);
	--dga-shadow-hover: 0 8px 24px rgba(0, 51, 102, 0.12), 0 2px 4px rgba(0, 51, 102, 0.06);

	font-family: 'Sarabun', 'IBM Plex Sans Thai', 'Noto Sans Thai', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
	color: var(--dga-text);
	background: var(--dga-bg);
	border-radius: var(--dga-radius-lg);
	box-shadow: var(--dga-shadow);
	max-width: 880px;
	margin: 2rem auto;
	overflow: hidden;
	position: relative;
	border: 1px solid var(--dga-border);
}

/* Decorative top bar — DGA dual-stripe */
.dga-cf::before {
	content: '';
	display: block;
	height: 6px;
	background: linear-gradient(90deg, var(--dga-orange) 0%, var(--dga-orange) 35%, var(--dga-blue) 35%, var(--dga-blue) 100%);
}

/* Header */
.dga-cf__header {
	padding: 2rem 2.25rem 1.25rem;
	background: linear-gradient(180deg, var(--dga-blue-light) 0%, transparent 100%);
	border-bottom: 1px solid var(--dga-border);
}

.dga-cf__title {
	margin: 0 0 0.5rem;
	font-size: 1.75rem;
	font-weight: 800;
	color: var(--dga-blue-dark);
	letter-spacing: -0.01em;
	line-height: 1.3;
	display: flex;
	align-items: center;
	gap: 0.6rem;
}

.dga-cf__title::before {
	content: '';
	display: inline-block;
	width: 6px;
	height: 28px;
	background: var(--dga-orange);
	border-radius: 3px;
	flex-shrink: 0;
}

.dga-cf__subtitle {
	margin: 0;
	color: var(--dga-text-soft);
	font-size: 0.95rem;
	line-height: 1.6;
}

/* Form */
.dga-cf__form {
	padding: 1.75rem 2.25rem 2.25rem;
}

.dga-cf__grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1.25rem 1.5rem;
}

.dga-cf__field {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.dga-cf__field--full {
	grid-column: 1 / -1;
}

.dga-cf__label {
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--dga-blue-dark);
	margin-bottom: 0.5rem;
	letter-spacing: 0.01em;
}

.dga-cf__required {
	color: var(--dga-orange);
	font-weight: 700;
	margin-left: 2px;
}

.dga-cf__input,
.dga-cf__select,
.dga-cf__textarea {
	width: 100%;
	padding: 0.75rem 0.95rem;
	font: inherit;
	font-size: 0.95rem;
	color: var(--dga-text);
	background: var(--dga-bg);
	border: 1.5px solid var(--dga-border);
	border-radius: var(--dga-radius);
	transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
	-webkit-appearance: none;
	appearance: none;
	box-sizing: border-box;
}

.dga-cf__textarea {
	resize: vertical;
	min-height: 130px;
	font-family: inherit;
	line-height: 1.6;
}

.dga-cf__select {
	background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2300529C' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 1rem center;
	padding-right: 2.5rem;
	cursor: pointer;
}

.dga-cf__input:hover,
.dga-cf__select:hover,
.dga-cf__textarea:hover {
	border-color: var(--dga-blue);
}

.dga-cf__input:focus,
.dga-cf__select:focus,
.dga-cf__textarea:focus {
	outline: none;
	border-color: var(--dga-orange);
	box-shadow: 0 0 0 4px rgba(244, 123, 32, 0.18);
	background: #fffbf7;
}

.dga-cf__input[aria-invalid="true"],
.dga-cf__select[aria-invalid="true"],
.dga-cf__textarea[aria-invalid="true"] {
	border-color: var(--dga-error);
	background: #fff5f4;
}

.dga-cf__input[aria-invalid="true"]:focus,
.dga-cf__select[aria-invalid="true"]:focus,
.dga-cf__textarea[aria-invalid="true"]:focus {
	box-shadow: 0 0 0 4px rgba(192, 57, 43, 0.15);
}

.dga-cf__hint {
	display: block;
	margin-top: 0.4rem;
	font-size: 0.78rem;
	color: var(--dga-text-soft);
}

.dga-cf__error {
	display: block;
	min-height: 1.25em;
	margin-top: 0.4rem;
	font-size: 0.82rem;
	color: var(--dga-error);
	font-weight: 500;
	line-height: 1.4;
}

.dga-cf__error:empty {
	display: none;
}

/* Consent checkbox */
.dga-cf__consent {
	background: var(--dga-blue-light);
	border: 1px solid #c9dcef;
	border-radius: var(--dga-radius);
	padding: 1rem 1.1rem;
	margin-top: 0.25rem;
}

.dga-cf__checkbox-label {
	display: flex;
	align-items: flex-start;
	gap: 0.75rem;
	cursor: pointer;
	font-size: 0.875rem;
	line-height: 1.55;
	color: var(--dga-text);
}

.dga-cf__checkbox {
	margin: 0.15rem 0 0;
	width: 18px;
	height: 18px;
	flex-shrink: 0;
	accent-color: var(--dga-orange);
	cursor: pointer;
}

.dga-cf__checkbox:focus-visible {
	outline: 2px solid var(--dga-orange);
	outline-offset: 2px;
	border-radius: 2px;
}

.dga-cf__checkbox-text {
	flex: 1;
}

/* Submit button */
.dga-cf__actions {
	margin-top: 1.75rem;
	display: flex;
	justify-content: flex-end;
	align-items: center;
	gap: 1rem;
	flex-wrap: wrap;
}

.dga-cf__submit {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.85rem 1.75rem;
	font-size: 1rem;
	font-weight: 700;
	color: #ffffff;
	background: linear-gradient(135deg, var(--dga-orange) 0%, var(--dga-orange-dark) 100%);
	border: none;
	border-radius: var(--dga-radius);
	cursor: pointer;
	box-shadow: 0 4px 12px rgba(244, 123, 32, 0.28), 0 1px 2px rgba(244, 123, 32, 0.15);
	transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
	letter-spacing: 0.01em;
	font-family: inherit;
	min-width: 160px;
	justify-content: center;
}

.dga-cf__submit:hover:not(:disabled) {
	transform: translateY(-1px);
	box-shadow: 0 6px 18px rgba(244, 123, 32, 0.38), 0 2px 4px rgba(244, 123, 32, 0.2);
}

.dga-cf__submit:active:not(:disabled) {
	transform: translateY(0);
}

.dga-cf__submit:focus-visible {
	outline: 3px solid var(--dga-blue);
	outline-offset: 3px;
}

.dga-cf__submit:disabled {
	opacity: 0.65;
	cursor: progress;
	transform: none;
}

.dga-cf__submit-icon {
	display: inline-flex;
	align-items: center;
}

.dga-cf__submit-icon svg {
	width: 18px;
	height: 18px;
}

/* Feedback panel */
.dga-cf__feedback {
	margin-top: 1.25rem;
	padding: 0;
	border-radius: var(--dga-radius);
	font-size: 0.92rem;
	font-weight: 500;
	line-height: 1.55;
	max-height: 0;
	overflow: hidden;
	opacity: 0;
	transform: translateY(-4px);
	transition: max-height 0.3s ease, opacity 0.25s ease, transform 0.25s ease, padding 0.25s ease;
}

.dga-cf__feedback--visible {
	max-height: 200px;
	padding: 1rem 1.1rem;
	opacity: 1;
	transform: translateY(0);
}

.dga-cf__feedback--success {
	background: #f0faf4;
	color: var(--dga-success);
	border: 1px solid #c1e7d3;
}

.dga-cf__feedback--error {
	background: #fdf2f0;
	color: var(--dga-error);
	border: 1px solid #f5cac1;
}

/* Compact theme */
.dga-cf--compact {
	max-width: 600px;
}

.dga-cf--compact .dga-cf__header {
	padding: 1.5rem 1.75rem 1rem;
}

.dga-cf--compact .dga-cf__form {
	padding: 1.25rem 1.75rem 1.75rem;
}

.dga-cf--compact .dga-cf__title {
	font-size: 1.4rem;
}

.dga-cf--compact .dga-cf__grid {
	grid-template-columns: 1fr;
	gap: 1rem;
}

/* Responsive */
@media (max-width: 720px) {
	.dga-cf {
		margin: 1rem;
		border-radius: var(--dga-radius);
	}

	.dga-cf__header {
		padding: 1.5rem 1.25rem 1rem;
	}

	.dga-cf__form {
		padding: 1.25rem 1.25rem 1.75rem;
	}

	.dga-cf__grid {
		grid-template-columns: 1fr;
		gap: 1rem;
	}

	.dga-cf__title {
		font-size: 1.4rem;
	}

	.dga-cf__submit {
		width: 100%;
	}
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
	.dga-cf *,
	.dga-cf *::before,
	.dga-cf *::after {
		transition: none !important;
		animation: none !important;
	}
}

/* High contrast mode */
@media (prefers-contrast: more) {
	.dga-cf {
		border: 2px solid var(--dga-blue-dark);
	}
	.dga-cf__input,
	.dga-cf__select,
	.dga-cf__textarea {
		border-width: 2px;
	}
}

/* Dark mode opt-in via prefers-color-scheme (keeps brand legible) */
@media (prefers-color-scheme: dark) {
	.dga-cf {
		--dga-text: #f1f5f9;
		--dga-text-soft: #cbd5e1;
		--dga-border: #334155;
		--dga-bg: #1e293b;
		--dga-bg-soft: #0f172a;
		--dga-blue-light: rgba(0, 82, 156, 0.18);
		background: var(--dga-bg);
		border-color: var(--dga-border);
	}

	.dga-cf__title {
		color: #f1f5f9;
	}

	.dga-cf__label {
		color: #93c5fd;
	}

	.dga-cf__input,
	.dga-cf__select,
	.dga-cf__textarea {
		background: #0f172a;
		color: #f1f5f9;
		border-color: #334155;
	}

	.dga-cf__input:focus,
	.dga-cf__select:focus,
	.dga-cf__textarea:focus {
		background: #1e293b;
	}

	.dga-cf__consent {
		background: rgba(0, 82, 156, 0.12);
		border-color: #1e40af;
	}
}