/* ================================================================
   HORIKA - Dark Theme Web Design
   Inspired by iOS app aesthetics with Japanese color palette
   ================================================================ */

:root {
	/* Dark theme color tokens - Japanese palette inspired by iOS app */
	--dark-bg: #0a0e12;
	--dark-surface: #141922;
	--dark-surface-alt: #1a1f2a;
	
	/* iOS app color palette */
	--ruri: #0065B0;           /* Deep blue (Holka flavor) */
	--asagi: #196FB7;          /* Cyan-toned blue (accent) */
	--usubeni: #E87A8F;        /* Pale rose (Hana flavor) */
	--mizu-yellow: #FCC150;    /* Light yellow (Horika flavor) */
	--kihada-gold: #D4A040;    /* Golden (Banana flavor) */
	
	/* Accents and text */
	--text-primary: #F5F7FA;
	--text-secondary: #C5CAD1;
	--text-tertiary: #8B92A1;
	--border-color: rgba(255, 255, 255, 0.08);
	--border-color-strong: rgba(255, 255, 255, 0.12);
	
	/* Spacing */
	--space-xs: 4px;
	--space-sm: 8px;
	--space-md: 12px;
	--space-lg: 16px;
	--space-xl: 24px;
	--space-2xl: 32px;
	--space-3xl: 48px;
	--space-4xl: 64px;
	
	/* Layout */
	--max-width: 1200px;
	--radius-sm: 8px;
	--radius-md: 12px;
	--radius-lg: 16px;
	
	/* Typography */
	--font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
	--font-serif: "Georgia", "Garamond", serif;
	--line-height-tight: 1.3;
	--line-height-normal: 1.5;
	--line-height-relaxed: 1.75;
}

/* Base styles */
* {
	box-sizing: border-box;
}

html, body {
	margin: 0;
	padding: 0;
	height: 100%;
}

body {
	font-family: var(--font-main);
	background: var(--dark-bg);
	background-image: repeating-linear-gradient(
		90deg,
		transparent,
		transparent 2px,
		rgba(255, 255, 255, 0.01) 2px,
		rgba(255, 255, 255, 0.01) 4px
	);
	color: var(--text-primary);
	line-height: var(--line-height-normal);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

/* ================================================================
   NAVIGATION
   ================================================================ */

.nav-bar {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(10, 14, 18, 0.8);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--border-color);
	padding: var(--space-lg) 0;
}

.nav-container {
	max-width: var(--max-width);
	margin: 0 auto;
	padding: 0 var(--space-xl);
}

.nav-home {
	display: inline-block;
	color: var(--text-secondary);
	text-decoration: none;
	font-size: 0.95rem;
	font-weight: 500;
	transition: color 0.2s ease;
}

.nav-home:hover {
	color: var(--asagi);
}

/* ================================================================
   MAIN & CONTAINER
   ================================================================ */

main {
	min-height: calc(100vh - 200px);
}

.container {
	max-width: var(--max-width);
	margin: 0 auto;
	padding: 0 var(--space-xl);
}

/* ================================================================
   HERO SECTION
   ================================================================ */

.hero {
	padding: var(--space-4xl) var(--space-xl) var(--space-3xl);
	text-align: center;
	background: linear-gradient(135deg, rgba(25, 111, 183, 0.08) 0%, rgba(232, 122, 143, 0.06) 100%);
}

.hero-container {
	max-width: 700px;
	margin: 0 auto;
}

.hero-icon {
	margin-bottom: var(--space-2xl);
}

.app-icon {
	width: 80px;
	height: 80px;
	margin: 0 auto;
	display: block;
	border-radius: var(--radius-lg);
	box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.hero-title {
	margin: 0 0 var(--space-md) 0;
	font-size: clamp(2rem, 5vw, 3.5rem);
	font-weight: 700;
	line-height: var(--line-height-tight);
	background: linear-gradient(135deg, var(--text-primary) 0%, var(--asagi) 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.hero-subtitle {
	font-size: 1.1rem;
	color: var(--text-secondary);
	margin: 0;
	max-width: 600px;
	margin: 0 auto;
	line-height: var(--line-height-relaxed);
}

/* ================================================================
   PHILOSOPHY SECTION
   ================================================================ */

.philosophy {
	padding: var(--space-3xl) var(--space-xl);
	background: var(--dark-surface);
	border-top: 1px solid var(--border-color);
	border-bottom: 1px solid var(--border-color);
}

.philosophy-text {
	max-width: 800px;
	margin: 0 auto var(--space-lg);
	font-size: 1.05rem;
	line-height: var(--line-height-relaxed);
	color: var(--text-secondary);
}

.philosophy-text:last-child {
	margin-bottom: 0;
}

.philosophy-text strong {
	color: var(--asagi);
	font-weight: 600;
}

/* ================================================================
   FEATURES SECTION
   ================================================================ */

.features {
	padding: var(--space-3xl) var(--space-xl);
}

.section-title {
	font-size: clamp(1.5rem, 4vw, 2.5rem);
	font-weight: 700;
	margin: 0 0 var(--space-2xl) 0;
	text-align: center;
	color: var(--text-primary);
}

.feature-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: var(--space-xl);
	max-width: var(--max-width);
	margin: 0 auto;
}

.feature-card {
	padding: var(--space-2xl);
	background: var(--dark-surface);
	border: 1px solid var(--border-color-strong);
	border-radius: var(--radius-lg);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	position: relative;
	overflow: hidden;
}

.feature-card::before {
	content: '';
	position: absolute;
	top: 0;
	left: -100%;
	width: 100%;
	height: 100%;
	background: linear-gradient(90deg, transparent, rgba(25, 111, 183, 0.1), transparent);
	transition: left 0.5s ease;
}

.feature-card:hover::before {
	left: 100%;
}

.feature-card:hover {
	border-color: var(--asagi);
	box-shadow: 0 8px 32px rgba(25, 111, 183, 0.15);
	transform: translateY(-4px);
}

.feature-icon {
	font-size: 2.5rem;
	margin-bottom: var(--space-lg);
	display: block;
}

.feature-title {
	font-size: 1.1rem;
	font-weight: 700;
	margin: 0 0 var(--space-sm) 0;
	color: var(--text-primary);
}

.feature-desc {
	font-size: 0.95rem;
	color: var(--text-secondary);
	line-height: var(--line-height-relaxed);
	margin: 0;
}

/* ================================================================
   FILM SECTION
   ================================================================ */

.film-section {
	padding: var(--space-3xl) var(--space-xl);
	background: var(--dark-surface);
	border-top: 1px solid var(--border-color);
}

.film-intro {
	text-align: center;
	max-width: 600px;
	margin: 0 auto var(--space-2xl);
	font-size: 1rem;
	color: var(--text-secondary);
	line-height: var(--line-height-relaxed);
}

/* Film filters */
.film-filters {
	display: flex;
	justify-content: center;
	gap: var(--space-sm);
	margin-bottom: var(--space-3xl);
	flex-wrap: wrap;
}

.filter-btn {
	padding: var(--space-sm) var(--space-lg);
	background: var(--dark-surface-alt);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-md);
	color: var(--text-secondary);
	font-size: 0.9rem;
	font-weight: 500;
	cursor: pointer;
	transition: all 0.2s ease;
}

.filter-btn:hover {
	border-color: var(--asagi);
	color: var(--asagi);
}

.filter-btn.active {
	background: var(--asagi);
	border-color: var(--asagi);
	color: white;
}

/* Film grid */
.film-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
	gap: var(--space-lg);
	max-width: var(--max-width);
	margin: 0 auto;
}

.film-card {
	padding: var(--space-lg);
	background: var(--dark-surface-alt);
	border: 1px solid var(--border-color-strong);
	border-radius: var(--radius-md);
	cursor: pointer;
	transition: all 0.3s ease;
	text-align: center;
}

.film-card:hover {
	transform: translateY(-8px);
	border-color: var(--asagi);
	box-shadow: 0 12px 32px rgba(25, 111, 183, 0.2);
}

.film-wrapper {
	width: 100%;
	height: 100px;
	border-radius: var(--radius-sm);
	margin-bottom: var(--space-lg);
	border: 2px solid rgba(255, 255, 255, 0.1);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 2rem;
	font-weight: 700;
}

.film-name {
	font-size: 1rem;
	font-weight: 700;
	color: var(--text-primary);
	margin-bottom: var(--space-xs);
}

.film-type-badge {
	display: inline-block;
	font-size: 0.75rem;
	font-weight: 600;
	padding: var(--space-xs) var(--space-sm);
	border-radius: var(--radius-sm);
	margin-bottom: var(--space-sm);
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.film-type-badge.normal {
	background: rgba(107, 114, 128, 0.2);
	color: #9CA3AF;
}

.film-type-badge.pro {
	background: rgba(25, 111, 183, 0.2);
	color: var(--asagi);
}

.film-type-badge.rare {
	background: rgba(251, 191, 36, 0.2);
	color: #FCD34D;
}

.film-type-badge.seasonal {
	background: rgba(249, 115, 22, 0.2);
	color: #FB923C;
}

.film-description {
	font-size: 0.8rem;
	color: var(--text-tertiary);
	line-height: var(--line-height-tight);
	margin: 0;
}

/* ================================================================
   CTA SECTION
   ================================================================ */

.cta-section {
	padding: var(--space-4xl) var(--space-xl);
	text-align: center;
}

.cta-content {
	max-width: 600px;
	margin: 0 auto;
}

.cta-title {
	font-size: 2.5rem;
	font-weight: 700;
	margin: 0 0 var(--space-lg) 0;
	color: var(--text-primary);
}

.cta-subtitle {
	font-size: 1.1rem;
	color: var(--text-secondary);
	margin: 0 0 var(--space-2xl) 0;
}

.app-store-link {
	display: inline-block;
	transition: transform 0.2s ease;
}

.app-store-link:hover {
	transform: scale(1.05);
}

.app-store-badge {
	max-width: 200px;
	width: 100%;
	height: auto;
	display: block;
}

/* ================================================================
   FOOTER
   ================================================================ */

.footer {
	padding: var(--space-3xl) var(--space-xl);
	border-top: 1px solid var(--border-color);
	background: var(--dark-surface);
	text-align: center;
}

.footer-nav {
	margin-bottom: var(--space-lg);
	display: flex;
	justify-content: center;
	align-items: center;
	gap: var(--space-sm);
	flex-wrap: wrap;
}

.footer-link {
	color: var(--asagi);
	text-decoration: none;
	font-size: 0.95rem;
	font-weight: 500;
	transition: color 0.2s ease;
}

.footer-link:hover {
	color: var(--text-primary);
}

.footer-sep {
	color: var(--text-tertiary);
}

.footer-credit {
	color: var(--text-tertiary);
	font-size: 0.9rem;
	margin: 0;
}

/* ================================================================
   RESPONSIVE DESIGN
   ================================================================ */

@media (max-width: 768px) {
	:root {
		--space-xl: 20px;
		--space-2xl: 28px;
		--space-3xl: 40px;
	}

	.hero {
		padding: var(--space-3xl) var(--space-xl) var(--space-2xl);
	}

	.hero-title {
		font-size: clamp(1.5rem, 4vw, 2.5rem);
	}

	.feature-grid {
		grid-template-columns: 1fr;
	}

	.film-grid {
		grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
		gap: var(--space-md);
	}

	.film-card {
		padding: var(--space-md);
	}

	.film-wrapper {
		height: 80px;
	}
}

@media (max-width: 480px) {
	:root {
		--space-xl: 16px;
		--space-2xl: 24px;
	}

	.nav-container,
	.container {
		padding: 0 var(--space-lg);
	}

	.hero {
		padding: var(--space-2xl) var(--space-lg) var(--space-xl);
	}

	.app-icon {
		width: 64px;
		height: 64px;
	}

	.hero-title {
		font-size: 1.5rem;
	}

	.hero-subtitle {
		font-size: 0.95rem;
	}

	.section-title {
		font-size: 1.5rem;
	}

	.film-grid {
		grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
	}

	.feature-grid {
		gap: var(--space-lg);
	}

	.cta-title {
		font-size: 1.8rem;
	}

	.footer-nav {
		flex-direction: column;
		gap: 0;
	}

	.footer-sep {
		display: none;
	}

	.footer-link {
		display: block;
		padding: var(--space-sm) 0;
	}
}

/* ================================================================
   ACCESSIBILITY
   ================================================================ */

a:focus-visible,
button:focus-visible {
	outline: 2px solid var(--asagi);
	outline-offset: 3px;
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
	* {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
	}
}

/* ================================================================
   UTILITY CLASSES
   ================================================================ */

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}