/* NELA Bitcoiners - Main Stylesheet */

/* CSS Variables */
:root {
    --bitcoin-orange: #F7931A;
    --bitcoin-orange-dark: #E8850F;
    --bitcoin-orange-light: #FFB347;
    --dark-bg: #1a1a2e;
    --darker-bg: #0f0f1a;
    --card-bg: #252542;
    --text-light: #ffffff;
    --text-muted: #b8b8c8;
    --text-gray: #8888a0;
    --success-green: #00d395;
    --gradient-orange: linear-gradient(135deg, #F7931A 0%, #FFB347 100%);
    --gradient-dark: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-orange: 0 4px 30px rgba(247, 147, 26, 0.3);
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--gradient-dark);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    color: var(--bitcoin-orange-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(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(247, 147, 26, 0.1);
    padding: 1rem 0;
    transition: var(--transition);
}

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

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

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo span {
    color: var(--bitcoin-orange);
}

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

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

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

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

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

/* Mobile Menu */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    border-radius: 2px;
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--gradient-orange);
    color: var(--darker-bg);
    box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 40px rgba(247, 147, 26, 0.4);
    color: var(--darker-bg);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--bitcoin-orange);
}

.btn-secondary:hover {
    background: var(--bitcoin-orange);
    color: var(--darker-bg);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(247, 147, 26, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

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

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(247, 147, 26, 0.1);
    border: 1px solid rgba(247, 147, 26, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--bitcoin-orange);
    margin-bottom: 1.5rem;
}

.hero-title {
    margin-bottom: 1.5rem;
}

.hero-title .highlight {
    color: var(--bitcoin-orange);
    position: relative;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 500px;
}

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

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
}

.hero-image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed rgba(247, 147, 26, 0.3);
}

.hero-image-placeholder svg {
    width: 100px;
    height: 100px;
    opacity: 0.5;
}

/* Stats Section */
.stats {
    padding: 4rem 0;
    background: var(--darker-bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(247, 147, 26, 0.1);
    transition: var(--transition);
}

.stat-item:hover {
    border-color: rgba(247, 147, 26, 0.3);
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--bitcoin-orange);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Section Styles */
.section {
    padding: 6rem 0;
}

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

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(247, 147, 26, 0.2);
    box-shadow: var(--shadow-soft);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: rgba(247, 147, 26, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon svg {
    width: 30px;
    height: 30px;
    color: var(--bitcoin-orange);
}

.card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Events */
.events-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.event-card {
    display: flex;
    gap: 1.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.event-date {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    padding: 1rem;
    background: rgba(247, 147, 26, 0.1);
    border-radius: var(--border-radius);
}

.event-date .day {
    font-size: 2rem;
    font-weight: 800;
    color: var(--bitcoin-orange);
    line-height: 1;
}

.event-date .month {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.event-content h4 {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.event-content p {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.event-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-gray);
}

.event-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Team/About Grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.team-member {
    text-align: center;
}

.team-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    background: var(--card-bg);
    border: 3px solid rgba(247, 147, 26, 0.3);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-avatar svg {
    width: 60px;
    height: 60px;
    opacity: 0.5;
}

.team-member h4 {
    margin-bottom: 0.25rem;
}

.team-member p {
    font-size: 0.875rem;
    color: var(--text-gray);
}

/* Resources */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.resource-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.resource-card:hover {
    transform: translateY(-5px);
    border-color: rgba(247, 147, 26, 0.3);
}

.resource-image {
    height: 180px;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--card-bg) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.resource-image svg {
    width: 60px;
    height: 60px;
    color: var(--bitcoin-orange);
    opacity: 0.7;
}

.resource-content {
    padding: 1.5rem;
}

.resource-content h4 {
    margin-bottom: 0.5rem;
}

.resource-content p {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.resource-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(247, 147, 26, 0.1);
    color: var(--bitcoin-orange);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--bitcoin-orange);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    transition: var(--transition);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

/* Contact Form */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin-bottom: 2rem;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.contact-details svg {
    width: 24px;
    height: 24px;
    color: var(--bitcoin-orange);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    width: 50px;
    height: 50px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.social-links a:hover {
    background: var(--bitcoin-orange);
    transform: translateY(-3px);
}

.social-links svg {
    width: 24px;
    height: 24px;
    color: var(--text-light);
}

.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--darker-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Newsletter */
.newsletter {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    padding: 4rem;
    text-align: center;
    border: 1px solid rgba(247, 147, 26, 0.2);
    position: relative;
    overflow: hidden;
}

.newsletter::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 h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.newsletter p {
    max-width: 500px;
    margin: 0 auto 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    background: var(--darker-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-light);
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--bitcoin-orange);
}

/* Page Header */
.page-header {
    padding: 10rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(247, 147, 26, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--text-gray);
}

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

/* Footer */
.footer {
    background: var(--darker-bg);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(247, 147, 26, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9rem;
}

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

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

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

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    font-size: 0.875rem;
    margin: 0;
}

.footer-bottom .social-links a {
    width: 40px;
    height: 40px;
}

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

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 0;
        max-width: 500px;
        margin: 0 auto;
    }

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

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

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

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

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

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

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(15, 15, 26, 0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transform: translateY(-150%);
        transition: var(--transition);
        border-bottom: 1px solid rgba(247, 147, 26, 0.1);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .mobile-toggle {
        display: flex;
    }

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

    .features-grid,
    .events-grid,
    .resources-grid {
        grid-template-columns: 1fr;
    }

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

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

    .footer-brand {
        max-width: 100%;
    }

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

    .newsletter {
        padding: 2rem;
    }

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

    .event-card {
        flex-direction: column;
    }

    .event-date {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-orange { color: var(--bitcoin-orange); }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-4 { margin-top: 2rem; }