:root {
    --bg-dark: #080c14;
    --bg-card: #0e1726;
    --bg-card-hover: #142035;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.4);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-indigo: #6366f1;
    --accent-purple: #a855f7;
    --accent-emerald: #10b981;
    --accent-cyan: #06b6d4;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(8, 12, 20, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.3rem;
    color: #fff;
}

.brand-badge {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    color: #fff;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-link:hover {
    color: #fff;
}

.btn-wallet {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    color: #fff;
    border: none;
    padding: 0.55rem 1.2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-wallet:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.45);
}

.btn-wallet.connected {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

/* Hero */
.hero {
    position: relative;
    padding: 80px 0 60px;
    text-align: center;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(168, 85, 247, 0.15) 40%, rgba(8, 12, 20, 0) 70%);
    pointer-events: none;
    z-index: 0;
}

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

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 0.35rem 1rem;
    border-radius: 99px;
    font-size: 0.85rem;
    color: var(--accent-indigo);
    margin-bottom: 1.5rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-emerald);
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.2rem;
}

.gradient-text {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 680px;
    margin: 0 auto 3rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: rgba(14, 23, 38, 0.6);
    border: 1px solid var(--border-color);
    padding: 1.2rem 2.5rem;
    border-radius: 16px;
    backdrop-filter: blur(12px);
    display: inline-flex;
    flex-wrap: wrap;
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 35px;
    background: var(--border-color);
}

/* Catalog */
.catalog-section {
    padding: 60px 0;
}

.catalog-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 2rem;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.catalog-header h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    margin-bottom: 0.3rem;
}

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

.search-box {
    position: relative;
    width: 320px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background: rgba(14, 23, 38, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.2s ease;
}

.search-box input:focus {
    border-color: var(--accent-indigo);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

.category-filters {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(14, 23, 38, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.1rem;
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.filter-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);
}

/* Catalog Grid */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.item-badge {
    align-self: flex-start;
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    margin-bottom: 0.8rem;
}

.card h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
    color: #fff;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 1.25rem;
    line-height: 1.5;
    flex-grow: 1;
}

.item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.endpoint-text code {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: #38bdf8;
    background: rgba(56, 189, 248, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.price-tag {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--accent-purple);
}

.card-wallet-btn {
    width: 100%;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    color: #fff;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    border: 1px solid rgba(168, 85, 247, 0.3);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.card-wallet-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(168, 85, 247, 0.4);
}

.card-wallet-btn.btn-connected {
    background: linear-gradient(135deg, #10b981, #059669);
    border-color: rgba(16, 185, 129, 0.3);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: #0d1424;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
    width: 90%;
    max-width: 900px;
    max-height: 88vh;
    overflow-y: auto;
    padding: 2.2rem;
    position: relative;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9);
}

.modal-close {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-close:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
    transform: rotate(90deg);
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-badge {
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
}

.endpoint-url {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #38bdf8;
    background: rgba(56, 189, 248, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    border: 1px solid rgba(56, 189, 248, 0.2);
    display: inline-block;
}

.modal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem;
}

.modal-left h4, .preview-header h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    margin-bottom: 0.6rem;
}

.payment-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    margin-top: 1rem;
}

.payment-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.payment-card-header h5 {
    font-size: 0.95rem;
    color: var(--accent-indigo);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.price-value {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--accent-purple);
}

.net-select-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.net-buttons {
    display: flex;
    gap: 0.4rem;
}

.net-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.net-btn.active {
    background: rgba(168, 85, 247, 0.2);
    border-color: var(--accent-purple);
    color: #fff;
}

.btn-pay-primary {
    width: 100%;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    color: #fff;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.btn-demo-unlock {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    color: #a7f3d0;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.35);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s ease;
    margin-bottom: 0.75rem;
}

.btn-demo-unlock:hover:not(:disabled) {
    background: rgba(16, 185, 129, 0.25);
    border-color: var(--accent-emerald);
    color: #fff;
}

.btn-demo-unlock:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
}

.quota-badge {
    background: rgba(16, 185, 129, 0.25);
    color: #6ee7b7;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.quota-badge-used {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.status-msg {
    font-size: 0.78rem;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 0.6rem;
}

.status-msg.success { color: var(--accent-emerald); font-weight: 600; }
.status-msg.error { color: #f87171; }
.status-msg.loading { color: #38bdf8; }

.manual-pay-area {
    margin-top: 0.8rem;
    text-align: center;
}

.manual-toggle-btn {
    width: 100%;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    font-family: var(--font-sans);
    color: #38bdf8;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.manual-toggle-btn:hover {
    background: rgba(56, 189, 248, 0.25);
    border-color: #38bdf8;
    color: #ffffff;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
}

.manual-details {
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--border-color);
    text-align: left;
}

.manual-details.hidden { display: none; }

.merchant-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    margin-bottom: 0.6rem;
}

.merchant-addr {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: #cbd5e1;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

.hash-input-box {
    display: flex;
    gap: 0.4rem;
}

.hash-input-box input {
    flex-grow: 1;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.4rem 0.6rem;
    color: #fff;
    font-size: 0.78rem;
    font-family: var(--font-mono);
}

.btn-verify {
    background: var(--accent-indigo);
    border: none;
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.78rem;
    cursor: pointer;
}

.json-container {
    background: #050912;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    max-height: 260px;
    overflow-y: auto;
}

.json-code {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: #a7f3d0;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.6rem;
}

.unlocked-actions {
    display: flex;
    gap: 0.4rem;
}

.unlocked-actions.hidden, .api-curl-card.hidden { display: none !important; }

.btn-action {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.btn-download-big {
    width: 100%;
    margin-top: 1rem;
    padding: 0.85rem 1.2rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff !important;
    border: 1px solid rgba(16, 185, 129, 0.5);
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    box-shadow: 0 4px 18px rgba(16, 185, 129, 0.45);
    transition: all 0.25s ease;
}

.btn-download-big:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 6px 22px rgba(16, 185, 129, 0.65);
}

.btn-download-big.hidden { display: none !important; }

.btn-action.btn-dl {
    background: rgba(16, 185, 129, 0.25);
    border-color: rgba(16, 185, 129, 0.5);
    color: #a7f3d0;
    font-weight: 700;
}

.api-curl-card {
    margin-top: 1rem;
    background: #050912;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.8rem;
}

.api-curl-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.copy-small-btn {
    background: transparent;
    border: none;
    color: #38bdf8;
    font-size: 0.75rem;
    cursor: pointer;
}

.api-curl-card pre {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: #a7f3d0;
    white-space: pre-wrap;
    word-break: break-all;
    margin: 0;
}

/* Docs */
.docs-section {
    padding: 40px 0 80px;
}

.docs-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.docs-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.docs-header h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    margin-bottom: 0.4rem;
}

.badge-http402 {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    font-size: 0.78rem;
    font-weight: 600;
}

.code-example {
    background: #050912;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.code-header {
    background: rgba(255, 255, 255, 0.03);
    padding: 0.6rem 1rem;
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.copy-btn {
    background: transparent;
    border: none;
    color: #38bdf8;
    cursor: pointer;
}

.code-example pre {
    padding: 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #a7f3d0;
    overflow-x: auto;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

.footer-links {
    display: flex;
    gap: 1.25rem;
}

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

.footer-links a:hover { color: #fff; }

@media (max-width: 768px) {
    .modal-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.2rem; }
    .nav-links { display: none; }
}