/* === Base Styles === */
:root {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #1a1a1d;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --success: #22c55e;
    --border: #27272a;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 24px;
    color: var(--accent);
}

.logo-text {
    font-size: 22px;
    font-weight: 600;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--accent-glow);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-muted);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    padding: 140px 0 80px;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-text h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-text .highlight {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

/* === Chat Animation === */
.hero-animation {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chat-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 600;
    font-size: 14px;
}

.chat-status {
    font-size: 12px;
    color: var(--success);
}

.chat-messages {
    padding: 20px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    opacity: 0;
    transform: translateY(10px);
    animation: messageIn 0.3s ease forwards;
}

@keyframes messageIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-message.user {
    background: var(--accent);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-message.agent {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chat-input {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

.input-text {
    color: var(--text-muted);
    font-size: 14px;
}

/* === Transaction Panel === */
.transaction-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.transaction-panel.active {
    opacity: 1;
    transform: translateY(0);
}

.tx-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    font-weight: 500;
}

.tx-icon {
    color: var(--accent);
}

.tx-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tx-step {
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0.3;
    transition: all 0.3s ease;
}

.tx-step.active {
    opacity: 1;
}

.tx-step.completed .tx-step-icon {
    background: var(--success);
    color: white;
}

.tx-step-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all 0.3s ease;
}

.tx-step-text {
    font-size: 14px;
    color: var(--text-secondary);
}

.tx-step.active .tx-step-text {
    color: var(--text-primary);
}

.tx-receipt {
    margin: 20px;
    padding: 20px;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    border-radius: 12px;
    text-align: center;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.tx-receipt.active {
    opacity: 1;
    transform: scale(1);
}

.receipt-amount {
    font-size: 28px;
    font-weight: 700;
    color: var(--success);
}

.receipt-to {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 8px 0;
}

.receipt-status {
    font-size: 12px;
    color: var(--success);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === Sections === */
.section {
    padding: 120px 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 60px;
}

/* === Steps === */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.step-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 32px;
    position: relative;
    transition: all 0.3s ease;
}

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

.step-number {
    font-size: 64px;
    font-weight: 700;
    color: var(--bg-tertiary);
    position: absolute;
    top: 20px;
    right: 24px;
}

.step-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.step-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === Features === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--accent);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === Comparison Table === */
.comparison-table {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}

.comparison-header {
    background: var(--bg-tertiary);
    font-weight: 600;
}

.comparison-cell {
    padding: 20px 24px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.comparison-cell.label {
    color: var(--text-secondary);
}

.comparison-cell.highlight {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-light);
}

.comparison-row:last-child .comparison-cell {
    border-bottom: none;
}

/* === Security === */
.security-grid {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.security-badge {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    padding: 20px 40px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* === Roadmap Section (Visual) === */
.roadmap-track {
    position: relative;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding: 2rem 0;
    overflow-x: auto;
}

.roadmap-line {
    position: absolute;
    top: 50px;
    left: 5%;
    right: 5%;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--success) 0%, 
        var(--success) 20%, 
        var(--accent) 20%, 
        var(--border) 100%);
    border-radius: 2px;
    z-index: 0;
}

.roadmap-phase {
    flex: 1;
    min-width: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.phase-dot {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border: 3px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.phase-complete .phase-dot {
    background: var(--success);
    border-color: var(--success);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.4);
}

.dot-target {
    border-color: var(--accent) !important;
    background: var(--accent) !important;
    box-shadow: 0 0 20px var(--accent-glow);
}

.dot-check {
    color: white;
    font-size: 1.25rem;
    font-weight: bold;
}

.dot-number {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 700;
}

.phase-complete .dot-number,
.dot-target .dot-number {
    color: white;
}

.phase-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.25rem;
    width: 100%;
    text-align: center;
    transition: all 0.3s ease;
}

.phase-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 0 20px var(--accent-glow);
}

.phase-complete .phase-card {
    border-color: var(--success);
}

.card-target {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
}

.phase-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.phase-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.badge-current {
    background: var(--success);
    color: white;
}

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

.phase-date {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.phase-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.phase-items {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.phase-item {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 0.25rem 0;
}

.phase-complete .phase-item {
    color: var(--success);
}

@media (max-width: 1024px) {
    .roadmap-track {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }
    
    .roadmap-line {
        display: none;
    }
    
    .roadmap-phase {
        flex-direction: row;
        align-items: flex-start;
        gap: 1rem;
        padding: 1rem 0;
        border-left: 3px solid var(--border);
        padding-left: 1.5rem;
        margin-left: 24px;
    }
    
    .phase-complete {
        border-left-color: var(--success);
    }
    
    .phase-target {
        border-left-color: var(--accent);
    }
    
    .phase-dot {
        position: absolute;
        left: -27px;
        width: 40px;
        height: 40px;
        margin-bottom: 0;
    }
    
    .phase-card {
        text-align: left;
    }
    
    .phase-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}