/**
 * Belltower Newsletter Widget
 *
 * Main stylesheet for the TAMUK Belltower Newsletter Elementor widget.
 * Full-page layout: banner, intro, subscription form, past-issues grid.
 *
 * Prefix: tamuk-bt-
 *
 * @package TAMUK_Belltower
 * @since   1.0.0
 */

/* ===========================
   Banner
   =========================== */

.tamuk-bt-banner {
	position: relative;
	width: 100%;
	overflow: hidden;
	line-height: 0;
	background: linear-gradient(145deg, #c6ddf5 0%, #e8eff8 100%);
}

.tamuk-bt-banner img {
	display: block;
	width: 100%;
	max-height: 380px;
	object-fit: cover;
	object-position: center;
	opacity: 0;
	transform: scale(1.02);
	transition: opacity 0.8s ease, transform 0.8s ease;
}

.tamuk-bt-banner img.is-loaded {
	opacity: 1;
	transform: scale(1);
}

/* Bottom fade — blends the banner into the page background */
.tamuk-bt-banner::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	height: 80px;
	background: linear-gradient(
		to bottom,
		transparent 0%,
		rgba(249, 250, 251, 0.4) 40%,
		rgba(249, 250, 251, 0.85) 75%,
		var(--tamuk-gray-50, #F9FAFB) 100%
	);
	pointer-events: none;
}

/* Subtle top inner shadow for depth */
.tamuk-bt-banner::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 6px;
	background: linear-gradient(to bottom, rgba(0, 51, 153, 0.08), transparent);
	z-index: 1;
	pointer-events: none;
}

/* ===========================
   Intro Section
   =========================== */

.tamuk-bt-intro {
	position: relative;
	max-width: var(--container-lg, 1024px);
	margin: -2rem auto 0;
	padding: 0 var(--gutter, 1.5rem) var(--space-8, 2rem);
	text-align: center;
	z-index: 1;
}

.tamuk-bt-intro-heading {
	font-family: var(--font-heading, 'Cinzel', 'Times New Roman', Georgia, serif);
	font-size: clamp(var(--text-2xl, 1.875rem), 4vw, var(--text-4xl, 3rem));
	font-weight: var(--weight-bold, 700);
	color: var(--tamuk-blue, #003399);
	letter-spacing: var(--tracking-wide, 0.025em);
	line-height: var(--leading-tight, 1.2);
	margin: 0 0 var(--space-4, 1rem);
	opacity: 0;
	animation: tamuk-bt-fade-up 0.6s ease 0.4s forwards;
}

.tamuk-bt-intro-heading::after {
	content: '';
	display: block;
	width: 60px;
	height: 4px;
	background: var(--tamuk-gold, #FCC10F);
	border-radius: 2px;
	margin: 0.75rem auto 0;
}

.tamuk-bt-intro-text {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-md, 1.1875rem);
	line-height: var(--leading-relaxed, 1.75);
	opacity: 0;
	animation: tamuk-bt-fade-up 0.6s ease 0.6s forwards;
	color: var(--color-text-light, var(--tamuk-gray-600, #4B5563));
	max-width: 640px;
	margin: 0 auto;
}

/* Banner + intro entrance */
@keyframes tamuk-bt-fade-up {
	from { opacity: 0; transform: translateY(14px); }
	to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
	.tamuk-bt-banner img,
	.tamuk-bt-intro-heading,
	.tamuk-bt-intro-text {
		opacity: 1;
		transform: none;
		animation: none;
		transition: none;
	}
}

/* ===========================
   Form Section
   =========================== */

.tamuk-bt-form-section {
	padding: var(--space-8, 2rem) var(--gutter, 1.5rem) var(--space-16, 4rem);
}

.tamuk-bt-form-card {
	max-width: 580px;
	margin: 0 auto;
	background: var(--tamuk-white, #ffffff);
	border-radius: var(--radius-lg, 0.75rem);
	box-shadow: var(--shadow-lg, 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1));
	padding: var(--space-10, 2.5rem) var(--space-8, 2rem);
}

.tamuk-bt-form-title {
	font-family: var(--font-heading, 'Cinzel', 'Times New Roman', Georgia, serif);
	font-size: var(--text-xl, 1.5rem);
	font-weight: var(--weight-bold, 700);
	color: var(--tamuk-blue, #003399);
	text-align: center;
	margin: 0 0 var(--space-2, 0.5rem);
}

.tamuk-bt-form-desc {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-sm, 0.9375rem);
	color: var(--color-text-light, var(--tamuk-gray-600, #4B5563));
	text-align: center;
	margin: 0 0 var(--space-6, 1.5rem);
	line-height: var(--leading-normal, 1.6);
}

/* ---- Form rows ---- */

.tamuk-bt-form-row {
	display: flex;
	gap: var(--space-4, 1rem);
	margin-bottom: var(--space-4, 1rem);
}

.tamuk-bt-field-group {
	flex: 1;
	display: flex;
	flex-direction: column;
}

.tamuk-bt-field-group--narrow {
	flex: 0 0 45%;
}

.tamuk-bt-field-group--full {
	flex: 1 1 100%;
}

/* ---- Labels ---- */

.tamuk-bt-label {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-sm, 0.9375rem);
	font-weight: var(--weight-semibold, 600);
	color: var(--color-text, var(--tamuk-gray-800, #1F2937));
	margin-bottom: var(--space-1, 0.25rem);
}

.tamuk-bt-label .tamuk-bt-required {
	color: var(--color-error, #DC2626);
	margin-left: 2px;
}

/* ---- Inputs ---- */

.tamuk-bt-input {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-base, 1.0625rem);
	line-height: var(--leading-normal, 1.6);
	color: var(--color-text, var(--tamuk-gray-800, #1F2937));
	background: var(--tamuk-white, #ffffff);
	border: var(--border-width, 1px) solid var(--color-border, var(--tamuk-gray-300, #D1D5DB));
	border-radius: var(--radius-md, 0.5rem);
	padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
	width: 100%;
	transition: border-color var(--transition-fast, 150ms ease),
	            box-shadow var(--transition-fast, 150ms ease);
	box-sizing: border-box;
}

.tamuk-bt-input::placeholder {
	color: var(--tamuk-gray-400, #9CA3AF);
}

.tamuk-bt-input:focus {
	outline: none;
	border-color: var(--tamuk-gold, #FCC10F);
	box-shadow: 0 0 0 var(--focus-ring-width, 3px) rgba(252, 193, 15, 0.35);
}

/* ---- Error state ---- */

.tamuk-bt-input--error {
	border-color: var(--color-error, #DC2626);
}

.tamuk-bt-input--error:focus {
	box-shadow: 0 0 0 var(--focus-ring-width, 3px) rgba(220, 38, 38, 0.25);
}

.tamuk-bt-field-error {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-xs, 0.8125rem);
	color: var(--color-error, #DC2626);
	margin-top: var(--space-1, 0.25rem);
	min-height: 1.1em;
}

/* ---- Honeypot ---- */

.tamuk-bt-hp {
	position: absolute;
	left: -9999px;
	opacity: 0;
	height: 0;
	overflow: hidden;
}

/* ---- Submit button ---- */

.tamuk-bt-submit {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--space-2, 0.5rem);
	width: 100%;
	margin-top: var(--space-4, 1rem);
	padding: var(--space-3, 0.75rem) var(--space-6, 1.5rem);
	font-family: var(--font-heading, 'Cinzel', 'Times New Roman', Georgia, serif);
	font-size: var(--text-base, 1.0625rem);
	font-weight: var(--weight-bold, 700);
	letter-spacing: var(--tracking-wide, 0.025em);
	text-transform: uppercase;
	color: var(--tamuk-blue, #003399);
	background-color: var(--tamuk-gold, #FCC10F);
	border: none;
	border-radius: var(--radius-md, 0.5rem);
	cursor: pointer;
	transition: background-color var(--transition-fast, 150ms ease),
	            box-shadow var(--transition-fast, 150ms ease),
	            transform var(--transition-fast, 150ms ease);
}

.tamuk-bt-submit:hover {
	background-color: var(--tamuk-gold-dark, #C89B00);
	box-shadow: var(--shadow-md, 0 4px 6px -1px rgba(0, 0, 0, 0.1));
}

.tamuk-bt-submit:active {
	transform: translateY(1px);
}

.tamuk-bt-submit:focus-visible {
	outline: var(--focus-ring-style, 3px solid var(--tamuk-gold, #FCC10F));
	outline-offset: var(--focus-ring-offset, 2px);
}

.tamuk-bt-submit:disabled {
	opacity: 0.7;
	cursor: not-allowed;
}

/* ---- Loading spinner ---- */

.tamuk-bt-spinner {
	display: none;
	width: 18px;
	height: 18px;
	border: 3px solid rgba(0, 51, 153, 0.25);
	border-top-color: var(--tamuk-blue, #003399);
	border-radius: 50%;
	animation: tamuk-bt-spin 0.6s linear infinite;
}

.tamuk-bt-submit--loading .tamuk-bt-spinner {
	display: inline-block;
}

@keyframes tamuk-bt-spin {
	to {
		transform: rotate(360deg);
	}
}

/* ---- Alert message ---- */

.tamuk-bt-alert {
	display: none;
	padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
	border-radius: var(--radius-md, 0.5rem);
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-sm, 0.9375rem);
	line-height: var(--leading-normal, 1.6);
	margin-bottom: var(--space-4, 1rem);
}

.tamuk-bt-alert--error {
	background-color: #FEF2F2;
	color: var(--color-error, #DC2626);
	border: 1px solid #FECACA;
}

.tamuk-bt-alert--visible {
	display: block;
}

/* ---- Thank-you / Success state ---- */

.tamuk-bt-success {
	display: none;
	text-align: center;
	padding: var(--space-8, 2rem) var(--space-4, 1rem);
}

.tamuk-bt-success--visible {
	display: block;
}

.tamuk-bt-success-icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 64px;
	height: 64px;
	border-radius: var(--radius-full, 9999px);
	background-color: var(--color-success, #059669);
	color: var(--tamuk-white, #ffffff);
	margin-bottom: var(--space-4, 1rem);
}

.tamuk-bt-success-icon svg {
	width: 32px;
	height: 32px;
}

.tamuk-bt-success-title {
	font-family: var(--font-heading, 'Cinzel', 'Times New Roman', Georgia, serif);
	font-size: var(--text-xl, 1.5rem);
	font-weight: var(--weight-bold, 700);
	color: var(--tamuk-blue, #003399);
	margin: 0 0 var(--space-3, 0.75rem);
}

.tamuk-bt-success-message {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-base, 1.0625rem);
	color: var(--color-text, var(--tamuk-gray-800, #1F2937));
	line-height: var(--leading-relaxed, 1.75);
	max-width: 480px;
	margin: 0 auto;
}

/* ===========================
   Past Issues
   =========================== */

.tamuk-bt-issues {
	max-width: var(--container-xl, 1280px);
	margin: 0 auto;
	padding: var(--space-12, 3rem) var(--gutter, 1.5rem) var(--space-16, 4rem);
}

.tamuk-bt-issues-heading {
	font-family: var(--font-heading, 'Cinzel', 'Times New Roman', Georgia, serif);
	font-size: clamp(var(--text-xl, 1.5rem), 3vw, var(--text-3xl, 2.25rem));
	font-weight: var(--weight-bold, 700);
	color: var(--tamuk-blue, #003399);
	text-align: center;
	letter-spacing: var(--tracking-wide, 0.025em);
	margin: 0 0 var(--space-2, 0.5rem);
}

.tamuk-bt-issues-rule {
	display: block;
	width: 80px;
	height: 3px;
	background-color: var(--tamuk-gold, #FCC10F);
	border: none;
	margin: 0 auto var(--space-10, 2.5rem);
}

/* ---- Issues grid ---- */

.tamuk-bt-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: var(--space-8, 2rem);
}

/* ---- Issue card ---- */

.tamuk-bt-card {
	display: flex;
	flex-direction: column;
	background: var(--tamuk-white, #ffffff);
	border-radius: var(--radius-lg, 0.75rem);
	overflow: hidden;
	box-shadow: var(--shadow-md, 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1));
	transition: box-shadow var(--transition-base, 250ms ease),
	            transform var(--transition-base, 250ms ease);
}

.tamuk-bt-card:hover {
	box-shadow: var(--shadow-xl, 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1));
	transform: translateY(-4px);
}

.tamuk-bt-card-thumb {
	position: relative;
	overflow: hidden;
	aspect-ratio: 16 / 10;
}

.tamuk-bt-card-thumb img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform var(--transition-slow, 350ms ease);
}

.tamuk-bt-card:hover .tamuk-bt-card-thumb img {
	transform: scale(1.05);
}

.tamuk-bt-card-thumb--placeholder {
	background: linear-gradient(135deg, var(--tamuk-gray-100, #F3F4F6) 0%, var(--tamuk-gray-200, #E5E7EB) 100%);
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--tamuk-gray-400, #9CA3AF);
}

.tamuk-bt-card-thumb--placeholder svg {
	width: 48px;
	height: 48px;
	opacity: 0.5;
}

.tamuk-bt-card-body {
	flex: 1;
	display: flex;
	flex-direction: column;
	padding: var(--space-5, 1.25rem) var(--space-5, 1.25rem) var(--space-6, 1.5rem);
}

.tamuk-bt-card-title {
	font-family: var(--font-heading, 'Cinzel', 'Times New Roman', Georgia, serif);
	font-size: var(--text-md, 1.1875rem);
	font-weight: var(--weight-bold, 700);
	color: var(--tamuk-blue, #003399);
	line-height: var(--leading-snug, 1.35);
	margin: 0 0 var(--space-1, 0.25rem);
}

.tamuk-bt-card-title a {
	color: inherit;
	text-decoration: none;
	transition: color var(--transition-fast, 150ms ease);
}

.tamuk-bt-card-title a:hover,
.tamuk-bt-card-title a:focus {
	color: var(--tamuk-blue-light, #1a4db3);
}

.tamuk-bt-card-date {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-xs, 0.8125rem);
	color: var(--color-text-muted, var(--tamuk-gray-500, #6B7280));
	text-transform: uppercase;
	letter-spacing: var(--tracking-wider, 0.05em);
	margin-bottom: var(--space-3, 0.75rem);
}

.tamuk-bt-card-excerpt {
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-sm, 0.9375rem);
	color: var(--color-text, var(--tamuk-gray-800, #1F2937));
	line-height: var(--leading-normal, 1.6);
	margin: 0 0 var(--space-4, 1rem);
	flex: 1;
}

.tamuk-bt-card-link {
	display: inline-flex;
	align-items: center;
	gap: var(--space-1, 0.25rem);
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-sm, 0.9375rem);
	font-weight: var(--weight-semibold, 600);
	color: var(--tamuk-blue, #003399);
	text-decoration: none;
	transition: color var(--transition-fast, 150ms ease);
}

.tamuk-bt-card-link:hover,
.tamuk-bt-card-link:focus {
	color: var(--tamuk-blue-light, #1a4db3);
	text-decoration: underline;
	text-underline-offset: 2px;
}

.tamuk-bt-card-link svg {
	width: 16px;
	height: 16px;
	transition: transform var(--transition-fast, 150ms ease);
}

.tamuk-bt-card-link:hover svg {
	transform: translateX(3px);
}

/* ---- No issues fallback ---- */

.tamuk-bt-no-issues {
	grid-column: 1 / -1;
	text-align: center;
	font-family: var(--font-body, 'Source Sans 3', sans-serif);
	font-size: var(--text-base, 1.0625rem);
	color: var(--color-text-muted, var(--tamuk-gray-500, #6B7280));
	padding: var(--space-8, 2rem) 0;
}

/* ===========================
   Responsive: Tablet (768px)
   =========================== */

@media (max-width: 768px) {
	.tamuk-bt-banner img {
		max-height: 260px;
	}

	.tamuk-bt-banner::after {
		display: none;
	}

	.tamuk-bt-banner::before {
		display: none;
	}

	.tamuk-bt-intro {
		margin-top: 0;
	}

	.tamuk-bt-grid {
		grid-template-columns: repeat(2, 1fr);
		gap: var(--space-6, 1.5rem);
	}

	.tamuk-bt-form-card {
		padding: var(--space-8, 2rem) var(--space-6, 1.5rem);
	}

	.tamuk-bt-intro {
		padding-top: var(--space-10, 2.5rem);
		padding-bottom: var(--space-6, 1.5rem);
	}
}

/* ===========================
   Responsive: Mobile (640px)
   =========================== */

@media (max-width: 640px) {
	.tamuk-bt-banner img {
		max-height: 200px;
	}

	.tamuk-bt-banner::after {
		height: 40px;
	}

	.tamuk-bt-intro {
		margin-top: -0.5rem;
	}

	.tamuk-bt-grid {
		grid-template-columns: 1fr;
	}

	.tamuk-bt-form-row {
		flex-direction: column;
		gap: var(--space-4, 1rem);
	}

	.tamuk-bt-field-group--narrow {
		flex: 1 1 100%;
	}

	.tamuk-bt-form-card {
		padding: var(--space-6, 1.5rem) var(--space-4, 1rem);
		margin-left: var(--space-2, 0.5rem);
		margin-right: var(--space-2, 0.5rem);
	}

	.tamuk-bt-intro {
		padding-top: var(--space-8, 2rem);
		padding-bottom: var(--space-4, 1rem);
	}

	.tamuk-bt-issues {
		padding-top: var(--space-8, 2rem);
		padding-bottom: var(--space-10, 2.5rem);
	}
}

/* ===========================
   Elementor Editor Overrides
   =========================== */

.elementor-editor-active .tamuk-bt-banner img {
	min-height: 180px;
}

.elementor-editor-active .tamuk-bt-card-thumb {
	min-height: 140px;
}