/* ===================================
   WANCHAN LANDING PAGE STYLES
   =================================== */

/* CSS Variables - Wanchan Design System */
:root {
    /* Static brand colors */
    --wanchan-amber: #f5a623;
    --wanchan-amber-light: #fcd34d;
    --wanchan-amber-dark: #d97706;
    --wanchan-purple: #7c3aed;
    --wanchan-purple-light: #a78bfa;
    --wanchan-purple-lighter: #c4b5fd;
    --wanchan-purple-lightest: #ede9fe;
    --wanchan-purple-dark: #6d28d9;
    --wanchan-purple-darker: #5b21b6;
    --wanchan-purple-base: #2e003e;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --header-height: 4.5rem;
    --max-width: 1200px;
    --section-padding: 5rem;
}

@property --bg-primary {
    syntax: '<color>';
    inherits: true;
    initial-value: #f3f4f6;
}

@property --bg-deep {
    syntax: '<color>';
    inherits: true;
    initial-value: #e5e7eb;
}

:root {
    /* ============ LIGHT MODE (default) ============ */
    --bg-primary: #f3f4f6;
    --bg-deep: #e5e7eb;
    --surface: #ffffff;
    --surface-hover: #f9fafb;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-heading-gradient-start: #1f2937;
    --text-heading-gradient-end: #4b5563;
    --border-color: var(--wanchan-slate-light);
    --accent: var(--wanchan-purple);
    --accent-light: var(--wanchan-purple-light);
    --accent-dark: var(--wanchan-purple-dark);
    --accent-glow: rgba(124, 58, 237, 0.3);
    --accent-glow-strong: rgba(124, 58, 237, 0.4);
    --accent-subtle: rgba(124, 58, 237, 0.1);
    --accent-bg: rgba(124, 58, 237, 0.15);
    --accent-border: rgba(124, 58, 237, 0.4);
    --header-bg: rgba(255, 255, 255, 0.85);
    --header-bg-scroll: rgba(255, 255, 255, 0.95);
    --hero-glass-start: rgba(124, 58, 237, 0.06);
    --hero-glass-mid: rgba(124, 58, 237, 0.03);
    --hero-glow-color: rgba(124, 58, 237, 0.12);
    --hero-glow-fade: rgba(124, 58, 237, 0.06);
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-hover-shadow: rgba(124, 58, 237, 0.12);
    --showcase-bg-gradient: rgba(124, 58, 237, 0.03);
    --divider-start: rgba(124, 58, 237, 0.3);
    --divider-mid: rgba(124, 58, 237, 0.5);
    --popup-bg: var(--surface);
    --popup-shadow-color: rgba(0, 0, 0, 0.15);
    --popup-border: var(--border-color);
    --source-bubble-bg: #ede9fe;
    --source-bubble-arrow: #ede9fe;
    --source-highlight-start: rgba(124, 58, 237, 0.2);
    --source-highlight-end: rgba(124, 58, 237, 0.08);
    --cursor-fill: %231f2937;
    --lang-card-gradient-start: rgba(124, 58, 237, 0.08);
    --lang-card-gradient-end: rgba(124, 58, 237, 0.03);
    --lang-card-bg: rgba(124, 58, 237, 0.04);
    --example-pair-bg: rgba(124, 58, 237, 0.03);
    --example-pair-hover-bg: rgba(124, 58, 237, 0.06);
    --example-border-left: var(--wanchan-purple);
    --list-border: rgba(0, 0, 0, 0.06);
    --download-btn-bg: var(--surface);
    --download-btn-border: var(--border-color);
    --download-soon-bg: #e5e7eb;
    --download-hover-bg: rgba(124, 58, 237, 0.08);
    --cta-text-color: #ffffff;
    --cta-bg: var(--wanchan-purple);
    --cta-hover-bg: var(--wanchan-purple-light);
    --tag-highlight-glow: rgba(124, 58, 237, 0.5);
    --tag-highlight-bg: rgba(124, 58, 237, 0.2);
    --tooltip-accent-bg: rgba(124, 58, 237, 0.08);
    --tooltip-accent-border: var(--wanchan-purple);
    --tooltip-close-hover-bg: rgba(0, 0, 0, 0.06);
    --footer-border: var(--border-color);
    --headword-popular-color: var(--wanchan-purple);
    --headword-font-size: calc(0.99em * var(--headword-font-size-no-units));
}

/* ============ DARK MODE ============ */
:root[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-deep: #0f172a;
    --surface: #1f2937;
    --surface-hover: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-heading-gradient-start: #ffffff;
    --text-heading-gradient-end: #d1d5db;
    --border-color: #374151;
    --accent: var(--wanchan-amber);
    --accent-light: var(--wanchan-amber-light);
    --accent-dark: var(--wanchan-amber-dark);
    --accent-glow: rgba(245, 166, 35, 0.3);
    --accent-glow-strong: rgba(245, 166, 35, 0.4);
    --accent-subtle: rgba(245, 166, 35, 0.1);
    --accent-bg: rgba(245, 166, 35, 0.15);
    --accent-border: rgba(245, 166, 35, 0.4);
    --header-bg: rgba(17, 24, 39, 0.85);
    --header-bg-scroll: rgba(17, 24, 39, 0.95);
    --hero-glass-start: rgba(255, 255, 255, 0.08);
    --hero-glass-mid: rgba(255, 255, 255, 0.04);
    --hero-glow-color: rgba(245, 166, 35, 0.12);
    --hero-glow-fade: rgba(245, 166, 35, 0.06);
    --card-bg: rgba(31, 41, 55, 0.4);
    --card-hover-shadow: rgba(0, 0, 0, 0.3);
    --showcase-bg-gradient: rgba(31, 41, 55, 0.2);
    --divider-start: rgba(245, 166, 35, 0.3);
    --divider-mid: rgba(245, 166, 35, 0.5);
    --popup-bg: #111827;
    --popup-shadow-color: rgba(0, 0, 0, 0.5);
    --popup-border: #374151;
    --source-bubble-bg: #fef3c7;
    --source-bubble-arrow: #fef3c7;
    --source-highlight-start: rgba(245, 166, 35, 0.3);
    --source-highlight-end: rgba(245, 166, 35, 0.1);
    --cursor-fill: %23ffffff;
    --lang-card-gradient-start: rgba(245, 166, 35, 0.1);
    --lang-card-gradient-end: rgba(91, 33, 117, 0.1);
    --lang-card-bg: rgba(17, 24, 39, 0.6);
    --example-pair-bg: rgba(255, 255, 255, 0.03);
    --example-pair-hover-bg: rgba(255, 255, 255, 0.06);
    --example-border-left: var(--wanchan-amber);
    --list-border: rgba(255, 255, 255, 0.05);
    --download-btn-bg: #1f2937;
    --download-btn-border: #374151;
    --download-soon-bg: #374151;
    --download-hover-bg: rgba(245, 166, 35, 0.1);
    --cta-text-color: #000000;
    --cta-bg: var(--wanchan-amber);
    --cta-hover-bg: var(--wanchan-amber-light);
    --tag-highlight-glow: rgba(245, 166, 35, 0.5);
    --tag-highlight-bg: rgba(245, 166, 35, 0.2);
    --tooltip-accent-bg: rgba(245, 166, 35, 0.1);
    --tooltip-accent-border: var(--wanchan-amber);
    --tooltip-close-hover-bg: rgba(255, 255, 255, 0.1);
    --footer-border: #374151;
    --headword-popular-color: var(--wanchan-amber);
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-deep) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: --bg-primary 0.6s ease, --bg-deep 0.6s ease, color 0.6s ease;
    animation: page-fade-in 0.8s ease both;
}

:root[data-theme="light"] body {
    background: linear-gradient(100deg, var(--bg-primary) 0%, var(--bg-deep) 100%);
}

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

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--header-bg);
    z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: background 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}

.site-header.is-scrolled {
    background: var(--header-bg-scroll);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Header Left Group */
.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* GitHub Link */
.github-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: var(--text-secondary);
    transition: color 0.6s ease, background 0.6s ease;
}

.github-link:hover {
    color: var(--text-primary);
    background: var(--accent-subtle);
}

.github-icon {
    width: 22px;
    height: 22px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

/* Logo CSS */
.logo-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: background 0.6s ease;
}

/* Fixed Theme Toggle */
.fixed-theme-toggle {
    position: fixed;
    bottom: 5%;
    left: 5%;
    z-index: 2000;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--surface);
    box-shadow: 0 4px 16px var(--popup-shadow-color);
}

/* Flag Icons */
.flag-icon {
    display: inline-block;
    vertical-align: middle;
    margin-top: -0.25rem;
    border-radius: 2px;
    width: 32px;
    height: auto;
}

.flag-icon.flag-jp {
    border: 1px solid var(--border-color);
}

.flag-icon.flag-lg {
    width: 48px;
    border-radius: 4px;
}

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: transparent;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.6s ease, background 0.6s ease, border-color 0.6s ease, transform 0.6s ease;
}

.theme-toggle:hover {
    color: var(--accent);
    background: var(--accent-subtle);
    border-color: var(--accent);
    transform: scale(1.05);
}

.theme-icon {
    width: 20px;
    height: 20px;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* Light mode: show sun, hide moon */
.sun-icon { display: none; }
.moon-icon { display: block; }

/* Dark mode: show moon, hide sun */
:root[data-theme="dark"] .sun-icon { display: block; }
:root[data-theme="dark"] .moon-icon { display: none; }

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s ease;
}
.mobile-menu-toggle:hover {
    background: var(--surface-hover);
}
.mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.6s ease;
}

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

.nav-link-cta {
    background: var(--cta-bg);
    color: var(--cta-text-color) !important;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.6s ease, transform 0.6s ease;
}

.nav-link-cta:hover {
    background: var(--cta-hover-bg);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    padding-bottom: 7.5rem;
    position: relative;
    overflow: hidden;
}

/* Diagonal Split Glassy Effect */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120%;
    background: linear-gradient(
        135deg,
        var(--hero-glass-start) 0%,
        var(--hero-glass-mid) 50%
    );
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    clip-path: polygon(0 0, 65% 0, 35% 85%, 0 85%);
    mask-image: linear-gradient(to bottom, black 0%, black 70%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 0%, black 70%, transparent 100%);
    z-index: 0;
}

/* Subtle glow along the diagonal edge */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        transparent 0%,
        transparent 48%,
        var(--hero-glow-color) 49%,
        var(--hero-glow-fade) 50%,
        transparent 51%,
        transparent 100%
    );
    mask-image: linear-gradient(to bottom, black 0%, black 60%, transparent 90%);
    -webkit-mask-image: linear-gradient(to bottom, black 0%, black 60%, transparent 90%);
    pointer-events: none;
    z-index: 0;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3.75rem 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.75rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-heading-gradient-start) 0%, var(--text-heading-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 31.25rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.6s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: var(--cta-text-color);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--surface);
    border-color: var(--accent);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Hero Visual - Popup Mockup */
.hero-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Source Text Bubble */
.source-text-container {
    position: relative;
    margin-bottom: 1.25rem;
    animation: float 3s ease-in-out infinite;
}

.source-text-bubble {
    background: var(--source-bubble-bg);
    color: var(--wanchan-slate-dark);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 500;
    box-shadow: 0 4px 20px var(--popup-shadow-color);
    position: relative;
}

.source-text-bubble::after {
    content: '';
    position: absolute;
    bottom: -0.625rem;
    left: 50%;
    transform: translateX(-50%);
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--source-bubble-arrow);
}

.source-text-highlight {
    background: linear-gradient(135deg, var(--source-highlight-start) 0%, var(--source-highlight-end) 100%);
    border-radius: 4px;
    padding: 0.125rem 0.25rem;
}

.cursor-indicator {
    position: absolute;
    bottom: -1.5625rem;
    right: 30%;
    width: 20px;
    height: 20px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffffff'%3E%3Cpath d='M5.5 3.21V20.8l4.97-4.97 3.31 7.17 2.22-1.03-3.31-7.17h6.81L5.5 3.21z'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
    animation: cursor-pulse 1.5s ease-in-out infinite;
}

/* Popup Mockup Wrapper */
.popup-mockup-wrapper {
    background: var(--popup-bg);
    position: relative;
    border-radius: 16px;
    box-shadow:
        0 25px 50px -12px var(--popup-shadow-color),
        0 0 0 1px var(--popup-border);
    overflow: hidden;
    max-width: 29rem;
    width: 100%;
    animation: popup-entrance 0.6s ease-out;
}

.popup-mockup-compact {
    max-width: 29rem;
}

.popup-mockup-wrapper .content-body-inner {
    padding: 0;
}

/* Override extension styles for landing page context */
.popup-mockup-wrapper .entry {
    border-top: none;
}

.popup-mockup-wrapper .entry+.entry {
    border-top: 1px solid var(--border-color);
}

/* Ensure tags display properly */
.popup-mockup-wrapper .tag[data-category="dictionary"] {
    display: inline-flex !important;
}

/* Feature Showcase Section */
.feature-showcase {
    padding: 6.25rem 1.5rem 7.5rem;
    position: relative;
    background: linear-gradient(180deg, transparent 0%, var(--showcase-bg-gradient) 100%);
}

/* Sleek section divider at top */
.feature-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(80%, 800px);
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--divider-start) 20%,
        var(--divider-mid) 50%,
        var(--divider-start) 80%,
        transparent 100%
    );
}

/* Sleek section divider at bottom */
.feature-showcase::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(80%, 800px);
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--divider-start) 20%,
        var(--divider-mid) 50%,
        var(--divider-start) 80%,
        transparent 100%
    );
}

.showcase-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 6.25rem;
    padding: 0 1.25rem;
}

.feature-highlight-card {
    display: flex;
    align-items: center;
    gap: 5rem;
    padding: 3.75rem;
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: transform 0.6s ease, box-shadow 0.6s ease;
}

.feature-highlight-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px var(--card-hover-shadow);
}

.feature-highlight-card.reverse-layout {
    flex-direction: row-reverse;
}

.highlight-content {
    flex: 1;
}

.highlight-content h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-heading-gradient-start) 0%, var(--text-heading-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-content p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.highlight-content p:last-child {
    margin-bottom: 0;
}

.highlight-subtext {
    font-size: 1rem !important;
    opacity: 0.85;
}

.highlight-text {
    color: var(--text-primary);
    background: var(--accent-bg);
    padding: 0.125rem 0.5rem;
    border-radius: 6px;
    border-bottom: 2px solid var(--accent-border);
    font-weight: 500;
    white-space: nowrap;
}

.highlight-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

/* Features list for highlight cards */
.highlight-features-list {
    list-style: none;
    padding: 0;
    margin-top: 1.5rem;
}

.highlight-features-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    font-size: 1.05rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--list-border);
}

.highlight-features-list li:last-child {
    border-bottom: none;
}

.feature-check {
    color: var(--accent);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Popup Demo Wrapper */
.popup-demo-wrapper {
    position: relative;
    max-width: 29rem;
    width: 100%;
}

/* Language Showcase Card */
.language-showcase {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 2.5rem;
    background: var(--lang-card-bg);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    max-width: 22.5rem;
    width: 100%;
}

.language-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--lang-card-gradient-start) 0%, var(--lang-card-gradient-end) 100%);
    border-radius: 16px;
}

.language-flag {
    font-size: 3rem;
}

.language-arrow {
    font-size: 2rem;
    color: var(--accent);
    animation: arrow-pulse 2s ease-in-out infinite;
}

.language-examples {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.example-pair {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--example-pair-bg);
    border-radius: 12px;
    border-left: 3px solid var(--example-border-left);
    transition: transform 0.6s ease, background 0.6s ease;
}

.example-pair:hover {
    transform: translateX(4px);
    background: var(--example-pair-hover-bg);
}

.jp-text {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-primary);
}

.lt-text {
    font-size: 1.1rem;
    color: var(--accent);
    font-weight: 500;
}

/* Popular and Rare Headword Styling for Landing Page Mockups */
.headword-popular,
.headword-popular ruby,
.headword-popular ruby rt {
    color: var(--headword-popular-color);
}

.text-rare {
    color: var(--text-secondary);
    font-size: 80%;
}

.text-rare ruby rt {
    color: var(--text-secondary);
}

/* Animated Mouse Cursor */
.popup-with-pointer {
    position: relative;
    overflow: visible;
}

.animated-cursor {
    position: absolute;
    width: 24px;
    height: 24px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffffff'%3E%3Cpath d='M5.5 3.21V20.8l4.97-4.97 3.31 7.17 2.22-1.03-3.31-7.17h6.81L5.5 3.21z'/%3E%3C/svg%3E") no-repeat center;
    background-size: contain;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.6));
    z-index: 100;
    pointer-events: none;
    margin-left: 0.625rem;
    margin-top: 0.625rem;
}

/* Highlight effect on netaisyklinga tag when cursor hovers */
.highlight-animation {
    /* Animation synced with cursor */
}

/* Animated Footer Tooltip - Inside popup, overlays content */
.popup-with-pointer {
    position: relative;
    overflow: hidden; /* Clip the tooltip initially */
}

.animated-footer-tooltip {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--popup-bg);
    border-top: 1px solid var(--border-color);
    border-radius: 0 0 16px 16px;
    opacity: 0;
    transform: translateY(100%);
    z-index: 200;
}

/* Synchronized Popup Demo Animations - Controlled via JS IntersectionObserver */
.popup-demo-wrapper.is-visible .animated-cursor {
    animation: cursor-to-tag 4s ease-in-out infinite;
}

.popup-demo-wrapper.is-visible .highlight-animation {
    animation: tag-highlight 4s ease-in-out infinite;
}

.popup-demo-wrapper.is-visible .animated-footer-tooltip {
    animation: tooltip-reveal 4s ease-in-out infinite;
}

.tooltip-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--tooltip-accent-bg);
    border-left: 3px solid var(--tooltip-accent-border);
}

.tooltip-body {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.tooltip-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.tooltip-subtitle {
    font-size: 0.9rem;
}

.tooltip-subtitle ruby rt {
    font-size: 0.7em;
}

.tooltip-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background-color 0.6s ease, color 0.6s ease;
}

.tooltip-close:hover {
    background: var(--tooltip-close-hover-bg);
    color: var(--text-primary);
}

/* Features Section */
.features-section {
    padding: var(--section-padding) 1.5rem;
    background: linear-gradient(180deg, transparent 0%, var(--showcase-bg-gradient) 100%);
}

.features-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3.75rem;
    background: linear-gradient(135deg, var(--text-heading-gradient-start) 0%, var(--text-heading-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.6s ease, box-shadow 0.6s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--card-hover-shadow);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Download Section */
.download-section {
    padding: var(--section-padding) 1.5rem;
    text-align: center;
}

.download-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.download-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--download-btn-bg);
    border: 1px solid var(--download-btn-border);
    padding: 1rem 2rem;
    border-radius: 12px;
    transition: all 0.6s ease;
}

.download-btn-soon {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--download-soon-bg);
    border: 1px solid var(--border-color);
    padding: 1rem 2rem;
    border-radius: 12px;
    transition: all 0.6s ease;
    cursor: not-allowed;
}

.download-btn:hover {
    border-color: var(--accent);
    background: var(--download-hover-bg);
}

.browser-icon {
    width: 32px;
    height: 32px;
}

/* Footer */
.site-footer {
    padding: 2.5rem 1.5rem;
    border-top: 1px solid var(--footer-border);
    text-align: center;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Theme Toggle Animations */
.theme-transitioning-out #page-content {
    animation: slide-out-right 0.4s forwards ease-in-out;
}
.theme-transitioning-in #page-content {
    animation: slide-in-left 0.2s forwards ease-in-out;
}

.theme-transitioning-out .logo-icon {
    animation: roll-out-right 0.4s forwards ease-in-out;
}
.theme-transitioning-in .logo-icon {
    animation: roll-in-left 0.2s forwards ease-in-out;
}

/* Force 6s color transition during theme changes to prevent snapping */
body.theme-transitioning-out,
body.theme-transitioning-in,
body.theme-transitioning-out *,
body.theme-transitioning-in * {
    transition: 
        --bg-primary 0.6s ease, 
        --bg-deep 0.6s ease, 
        color 0.6s ease, 
        background-color 0.6s ease, 
        background 0.6s ease, 
        border-color 0.6s ease !important;
}

/* Animations */
@keyframes arrow-pulse {
    0%, 100% { transform: translateX(0); opacity: 1; }
    50% { transform: translateX(8px); opacity: 0.7; }
}

@keyframes cursor-to-tag {
    0% {
        transform: translate(23em, -4rem);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    40% {
        /* Move to the Netaisyklinga tag position (approximately) */
        transform: translate(0, 0);
    }
    51% {
        transform: translate(0, 0) scale(0.75);
    }
    55% {
        /* Small click animation */
        transform: translate(0, 0) scale(1.1);
    }
    60% {
        transform: translate(0, 0);
    }
    90% {
        transform: translate(0, 0);
        opacity: 1;
    }
    100% {
        transform: translate(0, 0);
        opacity: 0;
    }
}

@keyframes tag-highlight {
    0%, 35% {
        box-shadow: none;
        background-color: transparent;
    }
    45%, 90% {
        box-shadow: 0 0 12px 3px var(--tag-highlight-glow);
        background-color: var(--tag-highlight-bg);
    }
    100% {
        box-shadow: none;
        background-color: transparent;
    }
}

/* Tooltip reveal animation - synced with cursor animation (4s)
   Cursor timeline:
   - 0-10%: Cursor appears
   - 40-50%: Cursor arrives at tag
   - 55%: Cursor "clicks" (scale animation)
   - 60%: Click completes
   - 90-100%: Cursor fades out
   
   Tooltip slides up from bottom inside popup after click
*/
@keyframes tooltip-reveal {
    0%, 55% {
        opacity: 0;
        transform: translateY(100%);
    }
    65% {
        opacity: 1;
        transform: translateY(0);
    }
    90% {
        opacity: 1;
        transform: translateY(0);
    }
    95%, 100% {
        opacity: 0;
        transform: translateY(100%);
    }
}

@keyframes page-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes cursor-pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

@keyframes popup-entrance {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes slide-out-right {
    0% { transform: translateX(0); opacity: 1; }
    100% { transform: translateX(100px); opacity: 0; }
}

@keyframes slide-in-left {
    0% { transform: translateX(-100px); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

@keyframes roll-out-right {
    0% { transform: translateX(0) rotate(0deg); opacity: 1; }
    100% { transform: translateX(100px) rotate(360deg); opacity: 0; }
}

@keyframes roll-in-left {
    0% { transform: translateX(-100px) rotate(-360deg); opacity: 0; }
    100% { transform: translateX(0) rotate(0deg); opacity: 1; }
}

/* Responsive */
@media (hover: hover) and (min-width: 901px) {
    .logo:hover .logo-text {
        background: var(--text-primary);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}

@media (max-width: 900px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--header-bg-scroll);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 4px 12px var(--popup-shadow-color);
    }
    
    .nav-links.is-open {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .feature-highlight-card,
    .feature-highlight-card.reverse-layout {
        flex-direction: column;
        text-align: center;
        gap: 2.5rem;
        padding: 2.5rem 1.5rem;
    }

    .language-showcase {
        max-width: 100%;
    }

    @keyframes cursor-to-tag {
    0% {
        transform: translate(0, 0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    40% {
        /* Move to the Netaisyklinga tag position (approximately) */
        transform: translate(0, 0);
    }
    50% {
        transform: translate(0, 0) scale(0.8);
    }
    55% {
        /* Small click animation */
        transform: translate(0, 0) scale(1);
    }
    60% {
        transform: translate(0, 0);
    }
    90% {
        transform: translate(0, 0);
        opacity: 1;
    }
    100% {
        transform: translate(0, 0);
        opacity: 0;
    }
   }

    .popup-mockup-wrapper {
        text-align: left;
    }

    .highlight-content h3 {
        font-size: 2rem;
    }

    .highlight-features-list li {
        display: list-item;
    }

    .highlight-visual {
        width: 100%;
    }

    .features-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 600px) {


    .hero-title {
        font-size: 2rem;
    }

    .source-text-bubble {
        font-size: 1.2rem;
        padding: 0.625rem 1rem;
    }
}
/* Article/Guide Layout */
.guide-container {
    max-width: 50rem;
    margin: 7.5rem auto 3.75rem;
    padding: 0 1.5rem;
}

.guide-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-heading-gradient-start) 0%, var(--text-heading-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.guide-content h2 {
    font-size: 1.8rem;
    margin: 2.5rem 0 1.25rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.625rem;
}

.guide-content p, .guide-content li {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.guide-content ul, .guide-content ol {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.guide-content li {
    margin-bottom: 0.5rem;
}

.guide-content code {
    background: var(--example-pair-bg);
    color: var(--text-primary);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
    border: 1px solid var(--border-color);
}

.guide-alert {
    background: var(--card-bg);
    border-left: 4px solid var(--accent);
    padding: 1rem 1.25rem;
    border-radius: 0 8px 8px 0;
    margin: 1.5rem 0;
    box-shadow: 0 4px 12px var(--popup-shadow-color);
}
.guide-alert strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.5rem;
}

/* Code Box Styles */
.code-box {
    position: relative;
    background: var(--example-pair-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin: 0.5rem 0;
    overflow-x: auto;
}

.code-box pre {
    margin: 0;
    white-space: pre-wrap;
    font-family: monospace;
    color: var(--text-primary);
    font-size: 0.9em;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.copy-btn.success {
    background: #4ade80;
    color: #064e3b;
    border-color: #4ade80;
}

/* Active nav link state */
.nav-link-active {
    color: var(--accent) !important;
    font-weight: 600;
    position: relative;
}

.nav-link-active::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}