/* TestCrew Support Page - Premium Dark Theme */
/* Based on Material Design 3 with Teal accent (#00BFA5) */

:root {
    /* Primary Colors - Vibrant Teal */
    --primary: #00BFA5;
    --primary-dark: #00897B;
    --primary-light: #1DE9B6;
    --primary-container: #00524A;
    --on-primary: #00332D;
    
    /* Premium/Gold */
    --tertiary: #FFD54F;
    --tertiary-dark: #FF8F00;
    --tertiary-container: #594400;
    
    /* Surface Colors - Deep Charcoal */
    --background: #0A0E12;
    --surface: #121820;
    --surface-variant: #1C242E;
    --surface-container: #151C24;
    --surface-container-high: #1C252F;
    --surface-container-highest: #252F3A;
    
    /* Text Colors */
    --on-background: #E8EAED;
    --on-surface: #E8EAED;
    --on-surface-variant: #B0BEC5;
    
    /* Outline */
    --outline: #5C6B74;
    --outline-variant: #2A3642;
    
    /* Success */
    --success: #69F0AE;
    
    /* Error */
    --error: #FF8A80;
    
    /* Shadows */
    --shadow: rgba(0, 0, 0, 0.4);
    --glow-primary: rgba(0, 191, 165, 0.25);
    --glow-premium: rgba(255, 213, 79, 0.25);
    
    /* Typography */
    --font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--on-background);
    background: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 191, 165, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 137, 123, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, var(--background) 0%, var(--surface) 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
}

.hero-content {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-xl);
    filter: drop-shadow(0 8px 32px var(--glow-primary));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.app-icon svg {
    width: 100%;
    height: 100%;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    color: var(--on-background);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero-tagline {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    color: var(--on-surface-variant);
    max-width: 500px;
    margin: 0 auto var(--spacing-xl);
}

.store-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.store-badge {
    display: inline-block;
    transition: transform var(--transition-normal), filter var(--transition-normal);
}

.store-badge:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.badge-icon {
    height: 48px;
    width: auto;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    color: var(--on-surface-variant);
    animation: bounce 2s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* Sections */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary-container);
    color: var(--primary-light);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    color: var(--on-background);
    letter-spacing: -0.01em;
}

/* About Section */
.about {
    background: linear-gradient(180deg, var(--surface) 0%, var(--background) 100%);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-lead {
    font-size: clamp(1.1rem, 2.5vw, 1.25rem);
    color: var(--on-surface);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.about-lead strong {
    color: var(--primary);
}

.about-problem,
.about-solution {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.about-problem {
    background: rgba(255, 138, 128, 0.1);
    border: 1px solid rgba(255, 138, 128, 0.2);
}

.about-solution {
    background: rgba(0, 191, 165, 0.1);
    border: 1px solid rgba(0, 191, 165, 0.2);
}

.problem-icon,
.solution-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.problem-icon {
    background: rgba(255, 138, 128, 0.15);
    color: var(--error);
}

.solution-icon {
    background: rgba(0, 191, 165, 0.15);
    color: var(--primary);
}

.problem-text h3,
.solution-text h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--on-surface);
}

.problem-text p,
.solution-text p {
    color: var(--on-surface-variant);
    font-size: 0.95rem;
}

/* Features Section */
.features {
    background: var(--background);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 8px 32px var(--shadow), 0 0 0 1px var(--primary-container);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-container) 0%, rgba(0, 191, 165, 0.2) 100%);
    border-radius: var(--radius-md);
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.feature-icon.premium {
    background: linear-gradient(135deg, var(--tertiary-container) 0%, rgba(255, 213, 79, 0.2) 100%);
    color: var(--tertiary);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--on-surface);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--on-surface-variant);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* How it Works Section */
.how-it-works {
    background: linear-gradient(180deg, var(--background) 0%, var(--surface) 100%);
}

.steps {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    left: 32px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    opacity: 0.3;
}

.step {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    position: relative;
    opacity: 0;
    transform: translateX(-20px);
}

.step.visible {
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.step-number {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    border-radius: var(--radius-full);
    color: var(--on-primary);
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: 0 4px 16px var(--glow-primary);
    z-index: 1;
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--on-surface);
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    color: var(--on-surface-variant);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* FAQ Section */
.faq {
    background: var(--surface);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--surface-container);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    opacity: 0;
    transform: translateY(10px);
}

.faq-item.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    cursor: pointer;
    font-weight: 500;
    color: var(--on-surface);
    list-style: none;
    transition: background var(--transition-fast);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary:hover {
    background: var(--surface-container-high);
}

.faq-item summary svg {
    flex-shrink: 0;
    color: var(--on-surface-variant);
    transition: transform var(--transition-normal);
}

.faq-item[open] summary svg {
    transform: rotate(180deg);
}

.faq-item p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--on-surface-variant);
    line-height: 1.7;
}

/* Contact Section */
.contact {
    background: linear-gradient(180deg, var(--surface) 0%, var(--background) 100%);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content p {
    color: var(--on-surface-variant);
    margin-bottom: var(--spacing-xl);
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.contact-email:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--glow-primary);
}

/* Footer */
.footer {
    background: var(--background);
    border-top: 1px solid var(--outline-variant);
    padding: var(--spacing-xl) 0;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-links a {
    color: var(--on-surface-variant);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-copyright {
    color: var(--outline);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .app-icon {
        width: 100px;
        height: 100px;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .about-problem,
    .about-solution {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .steps::before {
        left: 20px;
    }
    
    .step-number {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }
    
    .faq-item summary {
        padding: var(--spacing-md);
    }
    
    .faq-item summary span {
        font-size: 0.95rem;
    }
}

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

/* Focus states */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--primary);
    color: var(--on-primary);
}