/* BlockLearned.com - Crypto Education Platform */
/* Clean, Educational Design */

:root {
    --primary: #3B82F6;
    --primary-light: rgba(59, 130, 246, 0.1);
    --secondary: #10B981;
    --secondary-light: rgba(16, 185, 129, 0.1);
    --accent: #8B5CF6;
    --accent-light: rgba(139, 92, 246, 0.1);
    --background: #0F172A;
    --surface: #1E293B;
    --surface-light: #334155;
    --text: #F8FAFC;
    --text-muted: #94A3B8;
    --border: #334155;
    --green: #22C55E;
    --red: #EF4444;
    --yellow: #EAB308;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; margin-bottom: 1rem; }
h3 { font-size: 1.25rem; }

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

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

.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-center { text-align: center; }

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--text);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background: var(--surface);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    z-index: 999;
}

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

.mobile-nav-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-muted);
    border-radius: 8px;
}

.mobile-nav-link:hover {
    background: var(--surface-light);
    color: var(--text);
}

@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .mobile-menu-btn { display: block; }
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: #2563EB;
    color: white;
}

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

.btn-secondary:hover {
    background: var(--surface);
    border-color: var(--primary);
}

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

.btn-outline:hover {
    background: var(--primary-light);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-secondary {
    background: var(--secondary-light);
    color: var(--secondary);
}

.badge-accent {
    background: var(--accent-light);
    color: var(--accent);
}

/* Cards */
.glass {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s;
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 5rem 0;
}

.page-header {
    padding: 8rem 0 3rem;
    text-align: center;
    background: linear-gradient(180deg, var(--surface) 0%, var(--background) 100%);
}

.page-header h1 {
    margin: 1rem 0 0.5rem;
}

.page-header p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Hero Section */
.hero {
    padding: 10rem 0 5rem;
    text-align: center;
    background: linear-gradient(180deg, var(--surface) 0%, var(--background) 100%);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2rem;
}

@media (max-width: 768px) {
    .hero { padding: 7rem 0 3rem; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
}

/* Educational Disclaimer Banner */
.edu-banner {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    border: 1px solid var(--primary);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
}

.edu-banner-content {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.edu-banner-content svg {
    flex-shrink: 0;
    color: var(--primary);
}

.edu-banner-content p {
    color: var(--text);
    font-size: 0.9rem;
}

/* Content Sections */
.content-section {
    margin-bottom: 2rem;
}

.content-section h2 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.content-section ul {
    list-style: none;
    padding-left: 0;
}

.content-section li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-muted);
}

.content-section li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Wallet Grid */
.wallet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .wallet-grid {
        grid-template-columns: 1fr;
    }
}

.wallet-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s;
}

.wallet-card:hover {
    border-color: var(--primary);
}

.wallet-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.wallet-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.wallet-card-title h3 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.wallet-card-body {
    margin-bottom: 1rem;
}

.wallet-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.feature-tag {
    background: var(--surface-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* FAQ Accordion */
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

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

.faq-question:hover {
    background: var(--surface-light);
}

.faq-answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-muted);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

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

/* Glossary */
.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.glossary-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
}

.glossary-item h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

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

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
}

/* Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .contact-grid { grid-template-columns: 1fr; }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-card {
    padding: 1.25rem;
}

.contact-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

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

.footer-disclaimer {
    background: var(--surface-light);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-disclaimer-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-disclaimer-content svg {
    flex-shrink: 0;
    color: var(--yellow);
}

.footer-disclaimer-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.footer-legal-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

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

.footer-legal-links span {
    color: var(--border);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Utility */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* Info Box */
.info-box {
    background: var(--surface-light);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.25rem;
    border-radius: 0 8px 8px 0;
    margin: 1rem 0;
}

.info-box.warning {
    border-left-color: var(--yellow);
    background: rgba(234, 179, 8, 0.1);
}

.info-box.danger {
    border-left-color: var(--red);
    background: rgba(239, 68, 68, 0.1);
}

/* Checklist */
.checklist {
    list-style: none;
}

.checklist li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.5rem 0;
}

.checklist li::before {
    content: none;
}

.checklist svg {
    flex-shrink: 0;
    margin-top: 0.125rem;
}