/* BavarianWW.de - Dark Fintech Design */
/* Color Palette: Deep Dark with Gold/Orange Accents */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #16161f;
    --bg-card-hover: #1e1e2a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6a6a7a;
    --accent-gold: #f7931a;
    --accent-gold-light: #ffb347;
    --accent-gold-dark: #c77800;
    --accent-blue: #3861fb;
    --accent-green: #16c784;
    --accent-red: #ea3943;
    --border-color: #2a2a3a;
    --gradient-gold: linear-gradient(135deg, #f7931a 0%, #ffb347 100%);
    --gradient-dark: linear-gradient(180deg, #12121a 0%, #0a0a0f 100%);
    --shadow-glow: 0 0 40px rgba(247, 147, 26, 0.15);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --max-width: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--accent-gold-light);
}

img {
    max-width: 100%;
    height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header / Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: var(--max-width);
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-gold);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(247, 147, 26, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 .highlight {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-gold);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: #000;
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-gold);
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

/* Feature Cards */
.features {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    background: rgba(247, 147, 26, 0.1);
    color: var(--accent-gold);
    padding: 0.375rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(247, 147, 26, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(247, 147, 26, 0.1);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-gold);
    font-weight: 500;
}

.feature-link:hover {
    gap: 0.75rem;
}

/* Newsletter Section */
.newsletter {
    padding: 6rem 0;
    background: var(--bg-primary);
}

.newsletter-box {
    background: var(--gradient-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.newsletter-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(247, 147, 26, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.newsletter-content {
    position: relative;
    z-index: 1;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter h2 {
    margin-bottom: 1rem;
}

.newsletter p {
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 0.75rem;
    max-width: 450px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.newsletter-form input:focus {
    border-color: var(--accent-gold);
}

.newsletter-form input::placeholder {
    color: var(--text-muted);
}

.form-message {
    margin-top: 1rem;
    font-size: 0.875rem;
}

.form-message.success {
    color: var(--accent-green);
}

.form-message.error {
    color: var(--accent-red);
}

/* Bitcoin Donation */
.donation {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.donation-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.donation-content h2 {
    margin-bottom: 1rem;
}

.donation-content p {
    margin-bottom: 1.5rem;
}

.btc-address {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    word-break: break-all;
    margin-bottom: 1rem;
}

.btc-address-text {
    flex: 1;
    color: var(--accent-gold);
}

.copy-btn {
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
}

.copy-btn:hover {
    background: var(--accent-gold);
    color: #000;
    border-color: var(--accent-gold);
}

.donation-qr {
    display: flex;
    justify-content: center;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.qr-placeholder span {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(5, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    margin-top: 1rem;
    max-width: 300px;
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-gold);
    color: #000;
}

/* Blog Styles */
.blog-header {
    padding: 8rem 0 4rem;
    background: var(--bg-secondary);
    text-align: center;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: rgba(247, 147, 26, 0.3);
}

.blog-card-image {
    height: 200px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.blog-card-tag {
    background: rgba(247, 147, 26, 0.1);
    color: var(--accent-gold);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.blog-card h3 {
    margin-bottom: 0.75rem;
}

.blog-card h3 a {
    color: var(--text-primary);
}

.blog-card h3 a:hover {
    color: var(--accent-gold);
}

.blog-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

/* Article Styles */
.article {
    padding: 8rem 0 4rem;
}

.article-header {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.article-content h2 {
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.article-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-content ul, .article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.article-content li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.article-content blockquote {
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent-gold);
    padding: 1.5rem 2rem;
    margin: 2rem 0;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.article-content blockquote p {
    margin-bottom: 0;
    font-style: italic;
}

.article-content code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-gold);
}

.article-content pre {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.article-content pre code {
    background: none;
    padding: 0;
}

.info-box {
    background: rgba(56, 97, 251, 0.1);
    border: 1px solid rgba(56, 97, 251, 0.3);
    border-radius: var(--border-radius-sm);
    padding: 1.5rem;
    margin: 2rem 0;
}

.info-box.warning {
    background: rgba(247, 147, 26, 0.1);
    border-color: rgba(247, 147, 26, 0.3);
}

.info-box.success {
    background: rgba(22, 199, 132, 0.1);
    border-color: rgba(22, 199, 132, 0.3);
}

.info-box h4 {
    margin-bottom: 0.5rem;
}

.info-box p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Table Styles */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.article-content th,
.article-content td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.article-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

.article-content td {
    color: var(--text-secondary);
}

.article-content tr:last-child td {
    border-bottom: none;
}

/* Tool Page Styles */
.tool-header {
    padding: 8rem 0 3rem;
    background: var(--bg-secondary);
    text-align: center;
}

.tool-container {
    padding: 3rem 0 6rem;
}

.calculator-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-gold);
}

.calculator-result {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    padding: 2rem;
    margin-top: 2rem;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-item {
    text-align: center;
}

.result-item .label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.result-item .value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.result-item .value.positive {
    color: var(--accent-green);
}

.result-item .value.negative {
    color: var(--accent-red);
}

.chart-container {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
}

/* Legal Pages */
.legal-page {
    padding: 8rem 0 4rem;
}

.legal-page h1 {
    margin-bottom: 2rem;
}

.legal-page h2 {
    margin-top: 3rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.legal-page p, .legal-page li {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.legal-page ul {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

    .donation-box {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .donation-qr {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 1rem;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-box {
        padding: 2rem;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

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

    .btc-address {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .calculator-card {
        padding: 1.5rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-gold { color: var(--accent-gold); }
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.hidden { display: none; }

/* ========================================
   ENTERPRISE ANIMATIONS & VISUAL EFFECTS
   ======================================== */

/* Scroll-Triggered Animation Base States */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered Animation for Grid Items */
.animate-stagger {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-stagger.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Slide-in Variants */
.animate-slide-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.animate-slide-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale-in Animation */
.animate-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* Keyframe Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-60px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

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

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(247, 147, 26, 0.2); }
    50% { box-shadow: 0 0 40px rgba(247, 147, 26, 0.4); }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Parallax Background Effect */
.parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    will-change: transform;
    z-index: 0;
}

/* Enhanced Hero Parallax */
.hero {
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(247, 147, 26, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float 8s ease-in-out infinite;
}

/* Button Hover Enhancements */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(247, 147, 26, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

/* Feature Card Enhancements */
.feature-card {
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(247, 147, 26, 0.2);
}

.feature-icon {
    transition: transform 0.3s ease, background 0.3s ease;
}

/* Blog Card Enhancements */
.blog-card {
    position: relative;
    overflow: hidden;
}

.blog-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
    transform: translateX(-100%);
    transition: transform 0.4s ease;
}

.blog-card:hover::after {
    transform: translateX(0);
}

/* Loading Skeleton Animation */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-card-hover) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius-sm);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
    margin-bottom: 1em;
}

.skeleton-image {
    height: 200px;
    width: 100%;
}

/* Counter Animation */
.counter {
    display: inline-block;
}

.counter.animate {
    animation: countUp 0.5s ease forwards;
}

/* Glow Effect on Focus */
input:focus, select:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.2);
}

/* Smooth Image Loading */
img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

img[data-src] {
    opacity: 0;
}

img.loaded {
    opacity: 1;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-gold);
    border: none;
    border-radius: 50%;
    color: #000;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(247, 147, 26, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(247, 147, 26, 0.4);
}

/* Dark Mode Variables */
:root {
    --transition-theme: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Dark Mode Toggle Button */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 1.25rem;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* Light Mode Theme */
[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f0f5;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f8;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a5a;
    --text-muted: #8a8a9a;
    --border-color: #e0e0e8;
    --gradient-dark: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .header {
    background: rgba(248, 249, 250, 0.95);
}

[data-theme="light"] .hero::before {
    background: radial-gradient(circle, rgba(247, 147, 26, 0.12) 0%, transparent 70%);
}

[data-theme="light"] .hero::after {
    background: radial-gradient(circle, rgba(247, 147, 26, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .hero h1 {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

/* Breadcrumb Navigation */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: var(--accent-gold);
}

.breadcrumb-separator {
    color: var(--text-muted);
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
}

/* FAQ Accordion */
.faq-section {
    padding: 6rem 0;
    background: var(--bg-primary);
}

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

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(247, 147, 26, 0.3);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: background 0.2s ease;
}

.faq-question:hover {
    background: var(--bg-card-hover);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--accent-gold);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Trust Badges / Social Proof */
.trust-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.trust-item {
    padding: 1.5rem;
}

.trust-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.trust-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.trust-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Stats Counter Animation */
.stat-number {
    display: inline-block;
    font-variant-numeric: tabular-nums;
}

/* Page Transition Overlay */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.page-transition.active {
    opacity: 1;
    pointer-events: all;
}

/* Header scroll state */
.header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Improved Focus States for Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

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

    .animate-on-scroll,
    .animate-stagger,
    .animate-slide-left,
    .animate-slide-right,
    .animate-scale {
        opacity: 1;
        transform: none;
    }
}

/* Mobile Responsive for New Features */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }

    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .trust-value {
        font-size: 1.5rem;
    }

    .faq-question {
        padding: 1rem 1.25rem;
        font-size: 0.95rem;
    }

    .theme-toggle {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .trust-grid {
        grid-template-columns: 1fr 1fr;
    }

    .trust-item {
        padding: 1rem;
    }

    .trust-icon {
        font-size: 2rem;
    }

    .breadcrumb {
        font-size: 0.8rem;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: auto;
}

.lang-switcher a {
    padding: 0.375rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
    text-transform: uppercase;
}

.lang-switcher a:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.lang-switcher a.active {
    color: var(--accent-gold);
    background: rgba(247, 147, 26, 0.1);
}

/* Mobile: Language Switcher in Menu */
@media (max-width: 768px) {
    .lang-switcher {
        margin-left: 0;
        justify-content: center;
        padding: 1rem 0;
        border-top: 1px solid var(--border-color);
    }
}

/* Additional Responsive Breakpoints */

/* Extra Small Mobile (iPhone SE, older Android) */
@media (max-width: 375px) {
    html {
        font-size: 13px;
    }
    
    .hero {
        padding-top: 70px;
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.875rem;
    }
    
    .btc-address-text {
        font-size: 0.7rem;
        word-break: break-all;
    }
    
    .donation-box {
        padding: 1.5rem;
    }
    
    .donation-qr img {
        width: 150px !important;
        height: 150px !important;
    }
}

/* Very Small Mobile (iPhone SE 1st gen) */
@media (max-width: 320px) {
    html {
        font-size: 12px;
    }
    
    .container {
        padding: 0 0.75rem;
    }
    
    .logo span {
        font-size: 1.125rem;
    }
    
    .feature-card, .calculator-card {
        padding: 1rem;
    }
    
    .donation-qr img {
        width: 120px !important;
        height: 120px !important;
    }
}

/* Tablet Portrait - Additional refinements */
@media (min-width: 768px) and (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .donation-box {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .donation-qr {
        justify-self: center;
    }
}

/* Large Desktop */
@media (min-width: 1440px) {
    :root {
        --max-width: 1400px;
    }
    
    .container {
        padding: 0 2rem;
    }
    
    .feature-card {
        padding: 2.5rem;
    }
}

/* Donation Section - Better Mobile Layout */
@media (max-width: 768px) {
    .donation-box {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .donation-qr {
        justify-self: center;
    }
    
    .btc-address {
        justify-content: center;
    }
}

/* Navigation - Mobile Menu Fix */
@media (max-width: 768px) {
    .nav-links {
        width: 100%;
        left: 0;
        right: 0;
    }
    
    .lang-switcher {
        width: 100%;
        display: flex;
        justify-content: center;
    }
}