/* ================================
   CSS Reset & Base Styles
   ================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ================================
   CSS Custom Properties (Theme)
   ================================ */

:root {
    /* Colors */
    --color-bg-primary: #0f0f0f;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #252525;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-accent-red: #ff4444;
    --color-accent-orange: #ff9800;
    --color-accent-yellow: #ffd700;
    --color-accent-green: #4caf50;
    --color-border: #333333;

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
}

/* ================================
   Global Styles
   ================================ */

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background: linear-gradient(to bottom, var(--color-bg-primary), var(--color-bg-secondary));
    background-attachment: fixed;
    min-height: 100vh;
}

/* ================================
   Typography
   ================================ */

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: clamp(1rem, 2vw, 1.125rem);
}

strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

a {
    color: var(--color-accent-orange);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-accent-yellow);
    text-decoration: underline;
}

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--color-text-secondary);
}

li {
    margin-bottom: var(--spacing-xs);
}

/* ================================
   Layout
   ================================ */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================================
   Hero Section
   ================================ */

.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-secondary);
    border-bottom: 2px solid var(--color-accent-red);
}

.hero-icon {
    margin: 0 auto var(--spacing-lg);
    display: block;
    filter: drop-shadow(0 0 20px rgba(255, 68, 68, 0.5));
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(255, 68, 68, 0.5));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 30px rgba(255, 68, 68, 0.8));
    }
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    color: var(--color-accent-red);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xl);
}

/* ================================
   Warning Box
   ================================ */

.warning-box {
    background: linear-gradient(135deg, rgba(255, 68, 68, 0.2), rgba(255, 152, 0, 0.2));
    border: 2px solid var(--color-accent-red);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) auto;
    max-width: 800px;
    box-shadow: var(--shadow-lg);
}

.warning-title {
    color: var(--color-accent-red);
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

.warning-text {
    color: var(--color-text-primary);
    margin-bottom: 0;
    font-size: clamp(1rem, 2vw, 1.25rem);
}

/* ================================
   Motto Box
   ================================ */

.motto-box {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) auto 0;
    max-width: 700px;
}

.motto {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    font-style: italic;
    color: var(--color-accent-orange);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.motto-explanation {
    color: var(--color-text-secondary);
    margin-bottom: 0;
    text-align: center;
}

/* ================================
   Main Content Sections
   ================================ */

main {
    padding: var(--spacing-2xl) 0;
}

.content-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-border);
}

.content-section:last-child {
    border-bottom: none;
}

/* ================================
   Info Box
   ================================ */

.info-box {
    background: var(--color-bg-tertiary);
    border-left: 4px solid var(--color-accent-orange);
    border-radius: var(--radius-sm);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.info-box h3 {
    color: var(--color-accent-orange);
}

/* ================================
   Risk Grid
   ================================ */

.risk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.risk-item {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-accent-red);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.risk-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.risk-item h3 {
    color: var(--color-accent-red);
    font-size: 1.25rem;
}

.risk-item p {
    margin-bottom: 0;
    font-size: 1rem;
}

/* ================================
   Alert Box
   ================================ */

.alert-box {
    background: rgba(255, 68, 68, 0.15);
    border: 2px solid var(--color-accent-red);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.alert-box p {
    margin-bottom: 0;
    color: var(--color-text-primary);
    font-size: 1.125rem;
}

/* ================================
   Method Boxes
   ================================ */

.method-box {
    background: var(--color-bg-tertiary);
    border-left: 4px solid var(--color-accent-green);
    border-radius: var(--radius-sm);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.method-box h3 {
    color: var(--color-accent-green);
}

/* ================================
   Tip Box
   ================================ */

.tip-box {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 152, 0, 0.1));
    border: 1px solid var(--color-accent-yellow);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.tip-box h3 {
    color: var(--color-accent-yellow);
}

/* ================================
   FAQ Section
   ================================ */

.faq-section {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.faq-container {
    margin-top: var(--spacing-xl);
}

.faq-item {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-accent-orange);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 1.125rem;
    font-weight: 600;
    text-align: left;
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    transition: background-color var(--transition-base);
    min-height: 44px; /* Touch-friendly */
}

.faq-question:hover {
    background: rgba(255, 152, 0, 0.1);
}

.faq-question:focus {
    outline: 2px solid var(--color-accent-orange);
    outline-offset: -2px;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--color-accent-orange);
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    margin-bottom: 0;
}

.faq-item.active .faq-answer {
    max-height: 1000px; /* Adjust based on content */
}

/* ================================
   Resources Grid
   ================================ */

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.resource-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-decoration: none;
    transition: transform var(--transition-base), border-color var(--transition-base);
    display: block;
    min-height: 44px; /* Touch-friendly */
}

.resource-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent-orange);
    text-decoration: none;
}

.resource-card h3 {
    color: var(--color-accent-orange);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.resource-card p {
    color: var(--color-text-secondary);
    margin-bottom: 0;
    font-size: 1rem;
}

/* ================================
   Final Warning
   ================================ */

.final-warning {
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-accent-orange);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.final-warning h3 {
    color: var(--color-accent-orange);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.final-warning ul {
    list-style: none;
    padding: 0;
    max-width: 600px;
    margin: 0 auto;
}

.final-warning li {
    padding: var(--spacing-xs) 0;
    font-size: 1.125rem;
    color: var(--color-text-primary);
}

/* ================================
   Footer
   ================================ */

.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.footer p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.footer-disclaimer {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.footer-donation {
    background: transparent;
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin: var(--spacing-lg) auto 0;
    max-width: 700px;
}

.donation-text {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.donation-item {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.donation-item:last-of-type {
    margin-bottom: var(--spacing-sm);
}

.donation-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    min-width: 100px;
    flex-shrink: 0;
}

.address-box {
    background: transparent;
    border: none;
    border-bottom: 1px dashed var(--color-border);
    border-radius: 0;
    padding: var(--spacing-xs) 0;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    flex: 1;
    min-width: 0;
}

.address-box:hover {
    border-bottom-color: var(--color-accent-orange);
}

.address-box:active {
    opacity: 0.7;
}

.address-box:focus {
    outline: 1px solid var(--color-accent-orange);
    outline-offset: 2px;
}

.address-text {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    word-break: break-all;
    text-align: left;
    flex: 1;
}

.address-box:hover .address-text {
    color: var(--color-accent-orange);
}

.copy-icon {
    font-size: 0.875rem;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.address-box:hover .copy-icon {
    opacity: 0.6;
}

@media (max-width: 767px) {
    .donation-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .donation-label {
        min-width: auto;
    }

    .address-box {
        width: 100%;
    }

    .address-text {
        font-size: 0.7rem;
    }

    .copy-icon {
        font-size: 0.75rem;
    }
}

.copy-feedback {
    margin-top: var(--spacing-sm);
    margin-bottom: 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent-green);
    text-align: center;
    min-height: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.copy-feedback.show {
    opacity: 1;
}

.copy-feedback:empty {
    display: none;
}

.footer-github {
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
}

.footer-github a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-github a:hover {
    color: var(--color-accent-orange);
    text-decoration: underline;
}

/* ================================
   Responsive Design
   ================================ */

/* Tablet */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .hero {
        padding: var(--spacing-2xl) 0 calc(var(--spacing-2xl) + var(--spacing-xl));
    }

    main {
        padding: calc(var(--spacing-2xl) + var(--spacing-xl)) 0;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    :root {
        --font-size-base: 18px;
    }

    .risk-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .resources-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Large Desktop */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
}

/* ================================
   Accessibility & Utilities
   ================================ */

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-accent-orange);
    outline-offset: 2px;
}

/* Screen reader only content */
.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;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text-primary: #ffffff;
        --color-text-secondary: #e0e0e0;
        --color-border: #666666;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .hero-icon {
        animation: none;
    }

    a {
        text-decoration: underline;
    }

    .faq-answer {
        max-height: none !important;
    }
}