:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #555;
    --text-muted: #888;
    --border-color: #e0e0e0;
    --accent: #667eea;
    --accent-hover: #5a6fd6;
    --accent-light: rgba(102, 126, 234, 0.1);
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
}

[data-theme="dark"] {
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-input: #1a1a2e;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #777;
    --border-color: #2a2a4a;
    --accent: #818cf8;
    --accent-hover: #6366f1;
    --accent-light: rgba(129, 140, 248, 0.15);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

nav {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.theme-toggle .theme-icon {
    font-size: 1.1rem;
}

.theme-toggle select {
    background: transparent;
    border: none;
    color: inherit;
    font-size: inherit;
    cursor: pointer;
    outline: none;
    padding: 2px 4px;
}

.theme-toggle select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.hero {
    text-align: center;
    padding: 80px 0 60px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-badge {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.email-capture {
    max-width: 480px;
    margin: 0 auto;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.email-capture input {
    flex: 1;
    min-width: 250px;
    padding: 14px 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: border-color 0.2s;
    outline: none;
}

.email-capture input:focus {
    border-color: var(--accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(102, 126, 234, 0.4);
    justify-content: center;
    text-align: center;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

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

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

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

.otp-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.otp-modal.active {
    display: flex;
}

.otp-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 40px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.otp-box h3 {
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.otp-box p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.otp-inputs {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
}

.otp-inputs input {
    width: 48px;
    height: 56px;
    text-align: center;
    font-size: 1.4rem;
    font-weight: 700;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

.otp-inputs input:focus {
    border-color: var(--accent);
}

.countdown-banner {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    padding: 20px 0;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    animation: slideDown 0.4s ease;
}

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

.countdown-banner.hidden {
    display: none !important;
}

.countdown-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.countdown-label {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.countdown-timer {
    display: flex;
    align-items: center;
    gap: 8px;
}

.countdown-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255,255,255,0.2);
    padding: 8px 12px;
    border-radius: 6px;
    min-width: 50px;
}

.countdown-unit span {
    color: white;
    font-size: 1.3rem;
    font-weight: 800;
    line-height: 1;
}

.countdown-unit small {
    color: rgba(255,255,255,0.8);
    font-size: 0.75rem;
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.countdown-sep {
    color: white;
    font-weight: 800;
    font-size: 1.2rem;
    height: 40px;
    display: flex;
    align-items: center;
}

.pricing-section {
    padding: 60px 0;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.pricing-card.featured::before {
    content: "Most Popular";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 4px 16px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.pricing-card .price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.price-base {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 1.8rem;
}

.price-special {
    color: var(--danger);
}

.pricing-card .price-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.pricing-card ul {
    list-style: none;
    text-align: left;
    margin-bottom: 24px;
}

.pricing-card li {
    padding: 8px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-card li::before {
    content: "\2713";
    color: var(--success);
    font-weight: 700;
}

.features {
    padding: 60px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    animation: featureCardIn 0.5s ease forwards;
}

.feature-card:nth-child(1).visible { animation-delay: 0s; }
.feature-card:nth-child(2).visible { animation-delay: 0.1s; }
.feature-card:nth-child(3).visible { animation-delay: 0.2s; }
.feature-card:nth-child(4).visible { animation-delay: 0.3s; }
.feature-card:nth-child(5).visible { animation-delay: 0.4s; }
.feature-card:nth-child(6).visible { animation-delay: 0.5s; }

@keyframes featureCardIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.feature-card:hover .feature-icon {
    transform: scale(1.2);
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-sub {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.demo-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 24px;
}

.demo-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 32px;
}

.demo-form h2 {
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 200px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    background: var(--bg-input);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

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

.leads-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.leads-table th {
    background: var(--bg-secondary);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.leads-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.leads-table tr:last-child td {
    border-bottom: none;
}

.leads-table tr:hover td {
    background: var(--accent-light);
}

.config-container {
    max-width: 700px;
    margin: 40px auto;
    padding: 0 24px;
}

.config-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 36px;
}

.config-card h2 {
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.tag-input-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    min-height: 48px;
    align-items: center;
    cursor: text;
    transition: border-color 0.2s;
}

.tag-input-wrapper:focus-within {
    border-color: var(--accent);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-light);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

.tag .remove-tag {
    cursor: pointer;
    font-size: 1.1rem;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.tag .remove-tag:hover {
    opacity: 1;
}

.tag-input {
    border: none !important;
    outline: none;
    background: transparent !important;
    padding: 4px !important;
    min-width: 120px;
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.price-display {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin: 24px 0;
    text-align: center;
}

.price-display .total-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
}

.price-display .price-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.price-breakdown {
    margin-top: 16px;
    text-align: left;
}

.price-breakdown li {
    padding: 4px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    list-style: none;
}

.warning-box {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin: 12px 0;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--warning);
}

.error-box {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin: 12px 0;
    font-size: 0.9rem;
    color: var(--danger);
}

.success-box {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin: 12px 0;
    font-size: 0.9rem;
    color: var(--success);
}

.success-container {
    max-width: 600px;
    margin: 60px auto;
    padding: 0 24px;
    text-align: center;
}

.success-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 48px 36px;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.success-card h2 {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.success-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.build-progress {
    margin: 24px 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient);
    border-radius: 4px;
    transition: width 0.5s ease;
    width: 0%;
}

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

.contact-sales {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    margin: 20px 0;
}

.contact-sales h4 {
    margin-bottom: 8px;
}

.contact-sales p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .hero { padding: 40px 0 30px; }
    .pricing-cards { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; }
    .email-capture { flex-direction: column; align-items: stretch; }
    .email-capture input { min-width: auto; }
    .otp-box { padding: 24px; }
    nav .container { flex-wrap: wrap; gap: 8px; }
    .countdown-inner { gap: 16px; }
    .countdown-label { font-size: 0.9rem; }
    .countdown-timer { gap: 4px; }
    .countdown-unit { min-width: 40px; padding: 6px 8px; }
    .countdown-unit span { font-size: 1.1rem; }
    .countdown-unit small { font-size: 0.65rem; }
    .countdown-sep { font-size: 1rem; }
    .pricing-card .price { font-size: 2rem; }
    .price-base { font-size: 1.4rem; }
}

.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    animation: slideUp 0.3s ease;
    max-width: 400px;
}

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

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.warning { border-left: 4px solid var(--warning); }

.tier-badge {
    display: inline-block;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tier-badge-tier1 {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.tier-badge-tier2 {
    background: var(--accent-light);
    color: var(--accent);
}

.tier-badge-tier3 {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.price-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.base-price-strike {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-muted);
    text-decoration: line-through;
}

.max-leads-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 6px;
    margin-bottom: 4px;
}