/* === Reset & Variables === */
:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-card: #1a1a1a;
    --color-text: #ffffff;
    --color-text-secondary: #888888;
    --color-accent: #f7931a; /* Bitcoin Orange */
    --color-accent-hover: #ffa940;
    --color-border: #2a2a2a;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --container-width: 1200px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --border-radius: 12px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
}

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

/* === Typography === */
h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p {
    color: var(--color-text-secondary);
}

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

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

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #e67e00 100%);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(247, 147, 26, 0.3);
    color: #000;
}

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

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

.btn-full {
    width: 100%;
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-btc {
    color: var(--color-accent);
    font-size: 1.2rem;
    opacity: 0.8;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-weight: 500;
}

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

.nav-cta {
    background: var(--color-accent);
    color: #000 !important;
    padding: 10px 20px;
    border-radius: var(--border-radius);
}

.nav-cta:hover {
    background: var(--color-accent-hover);
}

.lang-switch {
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: var(--spacing-sm);
}

.lang-switch:hover {
    border-color: var(--color-accent);
    color: var(--color-accent) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(80px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    max-width: var(--container-width);
    margin: 0 auto;
    gap: var(--spacing-xl);
    position: relative;
}

.hero::before {
    content: '₿';
    position: absolute;
    right: -5%;
    top: 50%;
    transform: translateY(-50%);
    font-size: 40rem;
    color: var(--color-accent);
    opacity: 0.03;
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(247, 147, 26, 0.1);
    border: 1px solid rgba(247, 147, 26, 0.3);
    border-radius: 50px;
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-visual {
    flex: 0 0 auto;
}

.hero-card {
    width: 280px;
    height: 280px;
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-secondary) 100%);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(247, 147, 26, 0.1) 0%, transparent 60%);
}

.hero-icon {
    font-size: 6rem;
    color: var(--color-accent);
    position: relative;
    z-index: 1;
}

.hero-portrait {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-accent);
    box-shadow: 0 20px 60px rgba(247, 147, 26, 0.3);
}

/* === Section Styling === */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

/* === Services Section === */
.services {
    background: var(--color-bg-secondary);
}

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

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    position: relative;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.service-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(247, 147, 26, 0.05) 0%, var(--color-bg-card) 100%);
}

.service-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--color-accent);
    color: #000;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    margin-bottom: var(--spacing-md);
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.service-features li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

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

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.service-link {
    font-weight: 600;
}

/* === About Section === */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-content h2 {
    margin-bottom: var(--spacing-md);
}

.about-lead {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.about-content p {
    margin-bottom: var(--spacing-sm);
}

.about-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.about-timeline h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.timeline {
    position: relative;
    padding-left: var(--spacing-md);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-md) - 4px);
    top: 8px;
    width: 10px;
    height: 10px;
    background: var(--color-accent);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 600;
}

.timeline-item h4 {
    margin: 4px 0;
}

.timeline-item p {
    font-size: 0.875rem;
}

/* === Quote Section === */
.quote-section {
    background: linear-gradient(135deg, rgba(247, 147, 26, 0.1) 0%, var(--color-bg) 100%);
    text-align: center;
}

.quote-section blockquote p {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-style: italic;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.quote-section cite {
    color: var(--color-accent);
    font-style: normal;
}

.rotating-quote {
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.quote-content {
    transition: transform 0.7s ease-in-out, opacity 0.7s ease-in-out;
}

.quote-content.slide-out {
    transform: translateX(-100vw);
    opacity: 0;
}

.quote-content.slide-in {
    transform: translateX(100vw);
    opacity: 0;
    transition: none;
}

.quote-progress-container {
    width: 100%;
    max-width: 300px;
    height: 3px;
    background: var(--color-border);
    border-radius: 2px;
    margin: 1.5rem auto 0;
    overflow: hidden;
}

.quote-progress-bar {
    height: 100%;
    background: var(--color-accent);
    width: 0%;
    animation: progressFill 8s linear infinite;
}

@keyframes progressFill {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* === Contact Section === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: 4px;
}

.contact-item p,
.contact-item a {
    font-size: 0.9rem;
}

.contact-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* === Footer === */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content p {
    font-size: 0.875rem;
}

.footer-btc {
    color: var(--color-accent);
    margin: 0 4px;
}

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

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* === Legal Pages === */
.legal-page {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    min-height: 70vh;
}

.legal-page h1 {
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent);
}

.legal-section {
    margin-bottom: var(--spacing-lg);
}

.legal-section h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.legal-section p {
    line-height: 1.8;
}

/* === Responsive === */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: calc(60px + var(--spacing-lg));
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-description {
        max-width: 100%;
    }

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

    .hero-card {
        width: 200px;
        height: 200px;
    }

    .hero-icon {
        font-size: 4rem;
    }

    .hero-portrait {
        width: 200px;
        height: 200px;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg);
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }

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

    .about-stats {
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}