/**
 * GDC Zone 5: The Diving — Styles
 * S7 §6: Dive site cards, marine life gallery, conditions, standards, adaptive content
 *
 * @package GDC
 * @since   5.0.0
 */

/* S7 §6: Zone container */
.gdc-zone-5-diving {
	background: var(--gdc-bg-deep);
}

/* S7 §6: Inner wrapper */
.gdc-diving__inner {
	max-width: var(--gdc-max-narrow);
	margin: 0 auto;
	padding: var(--gdc-section-py-mobile) var(--gdc-section-px-mobile);
}

/* ==============================
   OVERVIEW PARAGRAPH
   ============================== */

/* S7 §6.4: Overview */
.gdc-diving__overview {
	margin-bottom: var(--gdc-space-6);
}

.gdc-diving__overview p {
	font-family: var(--gdc-font-body);
	font-size: 1rem;
	line-height: 1.7;
	color: var(--gdc-white-muted);
	margin: 0;
}

/* ==============================
   SECTION HEADINGS
   ============================== */

.gdc-diving__sites-header h3,
.gdc-diving__marine-header h3,
.gdc-diving__conditions-header h3 {
	font-family: var(--gdc-font-heading);
	font-size: 1.25rem;
	font-weight: 600;
	color: var(--gdc-white);
	margin: 0 0 var(--gdc-space-3);
}

.gdc-diving__sites-header,
.gdc-diving__marine-header,
.gdc-diving__conditions-header {
	margin-top: var(--gdc-space-6);
}

.gdc-diving__sites-header:first-child {
	margin-top: 0;
}

/* ==============================
   DIVE SITE CARDS
   ============================== */

/* S7 §6.5: Card grid — mobile single column */
.gdc-dive-sites {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--gdc-space-4);
}

/* S7 §6.5: Individual site card */
.gdc-dive-site {
	background: var(--gdc-surface, var(--gdc-bg-abyss, #141B24));
	border: 1px solid rgba(255, 255, 255, 0.06);
	border-radius: var(--gdc-radius-lg, 12px);
	overflow: hidden;
	transition: transform var(--gdc-duration-fast, 150ms) var(--gdc-ease-default, ease);
}

.gdc-dive-site:hover {
	transform: scale(1.02);
}

/* S7 §6.5: Site card image */
.gdc-dive-site__image {
	position: relative;
	aspect-ratio: 3 / 2;
	overflow: hidden;
}

.gdc-dive-site__image img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

/* S7 §6.5: Site card content */
.gdc-dive-site__content {
	padding: var(--gdc-space-3);
}

.gdc-dive-site__name {
	font-family: var(--gdc-font-heading);
	font-size: 1.25rem;
	font-weight: 600;
	color: var(--gdc-white);
	margin: 0 0 4px;
	line-height: 1.3;
}

.gdc-dive-site__type {
	font-family: var(--gdc-font-body);
	font-size: 0.875rem;
	color: var(--gdc-white-dim);
	margin: 0 0 8px;
}

.gdc-dive-site__highlights {
	font-family: var(--gdc-font-body);
	font-size: 0.875rem;
	color: var(--gdc-white-muted);
	margin: 0 0 8px;
}

.gdc-dive-site__description {
	font-family: var(--gdc-font-body);
	font-size: 1rem;
	line-height: 1.7;
	color: var(--gdc-white-muted);
	margin: 0;
}

/* S7 §6.5: View all sites button */
.gdc-diving__more-sites {
	display: block;
	margin: var(--gdc-space-4) auto 0;
	font-family: var(--gdc-font-body);
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--gdc-purple);
	background: transparent;
	border: 1px solid rgba(155, 127, 212, 0.3);
	border-radius: var(--gdc-radius-md, 8px);
	padding: var(--gdc-space-2) var(--gdc-space-4);
	cursor: pointer;
	min-height: 44px;
	transition: border-color var(--gdc-duration-fast, 150ms) var(--gdc-ease-default, ease);
}

.gdc-diving__more-sites:hover {
	border-color: var(--gdc-purple);
}

.gdc-diving__more-sites:focus-visible {
	outline: 2px solid var(--gdc-purple);
	outline-offset: 2px;
}

/* ==============================
   MARINE LIFE GALLERY
   ============================== */

/* S7 §6.6: Horizontal scroll on mobile */
.gdc-marine-life {
	display: flex;
	gap: var(--gdc-space-3);
	overflow-x: auto;
	scroll-snap-type: x mandatory;
	-webkit-overflow-scrolling: touch;
	padding-bottom: var(--gdc-space-2);
	scrollbar-width: none;
}

.gdc-marine-life::-webkit-scrollbar {
	display: none;
}

/* S7 §6.6: Species card */
.gdc-marine-life__card {
	flex: 0 0 120px;
	scroll-snap-align: start;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--gdc-space-1);
}

/* S7 §6.6: Species photo — 120px square, rounded */
.gdc-marine-life__photo {
	width: 120px;
	height: 120px;
	border-radius: var(--gdc-radius-lg, 12px);
	object-fit: cover;
	display: block;
}

/* S7 §6.6: No-photo placeholder */
.gdc-marine-life__placeholder {
	width: 120px;
	height: 120px;
	border-radius: var(--gdc-radius-lg, 12px);
	background: var(--gdc-bg-abyss, #141B24);
	display: flex;
	align-items: center;
	justify-content: center;
}

.gdc-marine-life__placeholder span {
	font-family: var(--gdc-font-heading);
	font-size: 2rem;
	font-weight: 600;
	color: var(--gdc-white-dim);
	text-transform: uppercase;
}

/* S7 §6.6: Species name */
.gdc-marine-life__name {
	font-family: var(--gdc-font-body);
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--gdc-white);
	margin: 0;
	text-align: center;
	white-space: nowrap;
}

/* ==============================
   WATER CONDITIONS PANEL
   ============================== */

/* S7 §6.7: Conditions grid — 2x2 mobile */
.gdc-conditions {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 1px;
	background: var(--gdc-surface, var(--gdc-bg-abyss, #141B24));
	border-radius: var(--gdc-radius-lg, 12px);
	overflow: hidden;
	margin-top: var(--gdc-space-3);
}

/* S7 §6.7: Condition item */
.gdc-conditions__item {
	background: var(--gdc-bg-deep, #0D1117);
	padding: var(--gdc-space-3);
	display: flex;
	flex-direction: column;
	gap: 4px;
}

/* S7 §6.7: Label */
.gdc-conditions__label {
	font-family: var(--gdc-font-body);
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--gdc-white-dim);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

/* S7 §6.7: Value */
.gdc-conditions__value {
	font-family: var(--gdc-font-body);
	font-size: 1rem;
	font-weight: 600;
	color: var(--gdc-white);
}

/* S7 §6.7: Best months highlight — natural scarcity (R3) */
.gdc-conditions__item--highlight .gdc-conditions__value {
	color: var(--gdc-teal, #4DD4C0);
}

/* S7 §6.7: Transparency note (R11 #100) */
.gdc-conditions__note {
	font-family: var(--gdc-font-body);
	font-size: 0.875rem;
	color: var(--gdc-white-dim);
	font-style: italic;
	margin: var(--gdc-space-2) 0 0;
	line-height: 1.6;
}

/* ==============================
   GDC EXPERIENCE STANDARDS
   ============================== */

/* S7 §6.8: Standards container */
.gdc-standards {
	margin-top: var(--gdc-space-6);
}

/* S7 §6.8: Standards title */
.gdc-standards__title {
	font-family: var(--gdc-font-heading);
	font-size: 1.25rem;
	font-weight: 600;
	color: var(--gdc-white);
	margin: 0 0 var(--gdc-space-3);
}

/* S7 §6.8: Badge grid — single column mobile */
.gdc-standards__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--gdc-space-2);
}

/* S7 §6.8: Individual badge */
.gdc-standards__badge {
	background: var(--gdc-surface, var(--gdc-bg-abyss, #141B24));
	border-radius: var(--gdc-radius-lg, 12px);
	padding: var(--gdc-space-3);
	display: flex;
	flex-direction: column;
	gap: 6px;
}

.gdc-standards__badge svg {
	color: var(--gdc-teal, #4DD4C0);
	flex-shrink: 0;
}

/* S7 §6.8: Badge name */
.gdc-standards__name {
	font-family: var(--gdc-font-body);
	font-size: 1rem;
	font-weight: 600;
	color: var(--gdc-white);
}

/* S7 §6.8: Badge detail */
.gdc-standards__detail {
	font-family: var(--gdc-font-body);
	font-size: 0.875rem;
	color: var(--gdc-white-muted);
	line-height: 1.4;
}

/* ==============================
   ADVANCED SECTION (EXPANDABLE)
   ============================== */

/* S7 §6.9: For experienced divers */
.gdc-diving__advanced {
	margin-top: var(--gdc-space-6);
	border: 1px solid rgba(255, 255, 255, 0.06);
	border-radius: var(--gdc-radius-lg, 12px);
}

/* S7 §6.9: Toggle button */
.gdc-diving__advanced-toggle {
	display: flex;
	align-items: center;
	justify-content: space-between;
	width: 100%;
	padding: var(--gdc-space-3) var(--gdc-space-4);
	font-family: var(--gdc-font-body);
	font-size: 1rem;
	font-weight: 600;
	color: var(--gdc-white);
	cursor: pointer;
	list-style: none;
	min-height: 56px;
}

.gdc-diving__advanced-toggle::-webkit-details-marker {
	display: none;
}

.gdc-diving__advanced-toggle svg {
	color: var(--gdc-white-dim);
	transition: transform var(--gdc-duration-fast, 150ms) var(--gdc-ease-default, ease);
	flex-shrink: 0;
}

.gdc-diving__advanced[open] .gdc-diving__advanced-toggle svg {
	transform: rotate(180deg);
}

.gdc-diving__advanced-toggle:focus-visible {
	outline: 2px solid var(--gdc-purple);
	outline-offset: -2px;
	border-radius: var(--gdc-radius-lg, 12px);
}

/* S7 §6.9: Advanced content */
.gdc-diving__advanced-content {
	padding: 0 var(--gdc-space-4) var(--gdc-space-4);
}

.gdc-diving__advanced-content p {
	font-family: var(--gdc-font-body);
	font-size: 1rem;
	line-height: 1.7;
	color: var(--gdc-white-muted);
	margin: 0;
}

/* ==============================
   MOBILE PREVIEW
   ============================== */

/* S7 §6.2: Preview content for collapsed mobile state */
.gdc-diving__preview {
	display: flex;
	flex-direction: column;
	gap: var(--gdc-space-1);
	padding-top: var(--gdc-space-2);
}

.gdc-diving__preview-species,
.gdc-diving__preview-conditions {
	font-family: var(--gdc-font-body);
	font-size: var(--gdc-text-sm);
	color: var(--gdc-white-muted);
}

.gdc-diving__preview-species {
	color: var(--gdc-white);
	font-weight: 500;
}

/* S7 §6.2: Hide preview when zone is expanded */
.gdc-zone-details[open] .gdc-diving__preview {
	display: none;
}

/* ==============================
   TABLET (768px+)
   ============================== */

@media (min-width: 768px) {
	.gdc-diving__inner {
		padding: var(--gdc-space-10) var(--gdc-space-4);
	}

	/* S7 §6.5: 2-column site cards on tablet */
	.gdc-dive-sites {
		grid-template-columns: 1fr 1fr;
	}

	/* S7 §6.6: Grid layout for marine life on tablet */
	.gdc-marine-life {
		display: grid;
		grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
		overflow-x: visible;
		max-width: 100%;
	}

	/* S7 §6.8: 2x3 badge grid on tablet */
	.gdc-standards__grid {
		grid-template-columns: 1fr 1fr;
	}
}

/* ==============================
   DESKTOP (1200px+)
   ============================== */

@media (min-width: 1200px) {
	.gdc-diving__inner {
		padding: var(--gdc-section-py-desktop) var(--gdc-space-4);
	}

	/* S7 §6.5: 2-column alternating layout on desktop */
	.gdc-dive-sites {
		grid-template-columns: 1fr 1fr;
		gap: var(--gdc-space-5);
	}

	.gdc-dive-site {
		display: flex;
		gap: var(--gdc-space-4);
		background: transparent;
		border: none;
		border-radius: 0;
	}

	.gdc-dive-site:hover {
		transform: none;
	}

	.gdc-dive-site:nth-child(even) {
		flex-direction: row-reverse;
	}

	.gdc-dive-site__image {
		flex: 0 0 320px;
		border-radius: var(--gdc-radius-lg, 12px);
	}

	.gdc-dive-site__content {
		padding: 0;
		flex: 1;
	}

	/* S7 §6.6: Marine life grid on desktop — up to 6 per row */
	.gdc-marine-life {
		grid-template-columns: repeat(auto-fit, 120px);
		justify-content: start;
		gap: var(--gdc-space-4);
	}

	/* S7 §6.7: Conditions as single row on desktop */
	.gdc-conditions {
		grid-template-columns: repeat(4, 1fr);
	}

	/* S7 §6.8: 2x3 badge grid on desktop */
	.gdc-standards__grid {
		grid-template-columns: 1fr 1fr 1fr;
	}
}

/* ==============================
   SCROLL FADE-IN
   ============================== */

@media (prefers-reduced-motion: no-preference) {
	.gdc-diving__inner {
		opacity: 0;
		transform: translateY(var(--gdc-scroll-slide-distance));
		transition:
			opacity var(--gdc-scroll-fade-duration) var(--gdc-ease-default),
			transform var(--gdc-scroll-fade-duration) var(--gdc-ease-default);
	}

	.gdc-diving__inner.se-visible {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (prefers-reduced-motion: reduce) {
	.gdc-diving__inner {
		opacity: 1;
		transform: none;
	}
}

/* S7 §6.6: Marine life modal */
.gdc-marine-modal {
	position: fixed; inset: 0; z-index: 1000; display: flex;
	align-items: center; justify-content: center;
}
.gdc-marine-modal[hidden] { display: none; }
.gdc-marine-modal__backdrop {
	position: absolute; inset: 0;
	background: rgba(0, 0, 0, 0.7);
}
.gdc-marine-modal__panel {
	position: relative; background: var(--gdc-surface, #1a2332);
	border-radius: var(--gdc-radius-lg, 12px);
	padding: var(--gdc-space-6, 2rem); max-width: 420px; width: 90%;
	max-height: 90vh; overflow-y: auto;
}
.gdc-marine-modal__close {
	position: absolute; top: 0.5rem; right: 0.5rem;
	background: none; border: none; cursor: pointer;
	color: var(--gdc-white-muted);
	min-width: 48px; min-height: 48px;
	display: flex; align-items: center; justify-content: center;
	padding: 4px;
}
.gdc-marine-modal__photo {
	width: 100%; height: 240px; object-fit: cover;
	border-radius: var(--gdc-radius-md, 8px); margin-bottom: 1rem;
}
.gdc-marine-modal__title {
	font-family: var(--gdc-font-heading); font-size: 1.25rem;
	color: var(--gdc-white); margin: 0 0 0.5rem;
}
.gdc-marine-modal__desc, .gdc-marine-modal__tip {
	font-size: 0.9rem; color: var(--gdc-white-muted); margin: 0 0 0.5rem;
}
body.gdc-modal-open { overflow: hidden; }