/* ==========================================================================
   DESIGN SYSTEM & VARIABLES (Stripe/Linear/Apple Fintech Inspired)
   ========================================================================== */
:root {
    --bg-main: #FFFFFF;
    --bg-surface: #F8FAFC;
    --bg-card: #FFFFFF;
    --accent: #0052FF;
    --accent-hover: #0041CC;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --border-color: #E2E8F0;
    --border-light: #F1F5F9;
    
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ==========================================================================
   BASE STYLES & RESET
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.w-100 { width: 100%; }
.muted { color: var(--text-muted) !important; }

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4 {
    letter-spacing: -0.02em;
    font-weight: 700;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--accent);
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: #EDF2F7;
    transform: translateY(-1px);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 999;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    height: 64px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.15rem;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.15s ease;
}

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

.btn-login-nav {
    padding: 6px 14px;
    font-size: 0.85rem;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.2s ease;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    padding: 100px 24px 80px 24px;
    text-align: center;
    background: radial-gradient(circle at top, rgba(0, 82, 255, 0.03) 0%, rgba(255, 255, 255, 0) 70%);
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-badge {
    background-color: var(--border-light);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

/* HERO AUTOMATION VISUAL CARD */
.hero-visual {
    width: 100%;
    max-width: 640px;
    margin-top: 20px;
}

.visual-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    text-align: left;
}

.visual-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 12px;
}

.visual-header .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.visual-header .dot.red {
    background-color: var(--danger);
    box-shadow: 0 0 8px var(--danger);
}

.visual-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.visual-body-row {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.visual-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background-color: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.item-label {
    font-size: 0.9rem;
    font-weight: 600;
}

.item-status {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 12px;
}

.status-danger { background-color: #FEF2F2; color: var(--danger); }
.status-warning { background-color: #FFFBEB; color: var(--warning); }
.status-success { background-color: #ECFDF5; color: var(--success); }

/* ==========================================================================
   SECTION MAIN LAYOUT
   ========================================================================== */
.section-padding {
    padding: 100px 24px;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.25rem;
    margin-bottom: 16px;
}

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

/* ==========================================================================
   FEATURES SYSTEM
   ========================================================================== */
.features {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.feature-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* ==========================================================================
   PRICING ENGINE GRID
   ========================================================================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-card.popular {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 12px;
    text-transform: uppercase;
}

.plan-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.plan-price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.plan-price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.plan-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    min-height: 48px;
}

.plan-features {
    list-style: none;
    margin-bottom: 32px;
    flex-grow: 1;
}

.plan-features li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.plan-features li::before {
    content: "✓";
    color: var(--accent);
    font-weight: 700;
}

.plan-btn {
    width: 100%;
}

/* ==========================================================================
   REVIEWS FEEDBACK MATRIX
   ========================================================================== */
.reviews {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.review-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.review-stars {
    color: #F59E0B;
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.review-card h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.review-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.review-author {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    display: block;
}

/* ==========================================================================
   FAQ ACCORDION DISCOVERY SYSTEM
   ========================================================================== */
.accordion-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.accordion-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    color: var(--text-primary);
}

.accordion-icon {
    font-size: 1.2rem;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease-out, padding 0.25s ease-out;
    padding: 0 24px;
}

.accordion-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding-bottom: 20px;
}

.accordion-item.active .accordion-content {
    max-height: 200px;
}

.accordion-item.active .accordion-icon {
    transform: rotate(45deg);
}

/* ==========================================================================
   CONTACT CONTROL MODULE
   ========================================================================== */
.contact {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
}

.contact-box {
    max-width: 560px;
    margin: 0 auto;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

/* FORMS COMMON INFRASTRUCTURE */
form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
textarea {
    width: 100%;
    font-family: var(--font);
    font-size: 0.95rem;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: #FFFFFF;
    outline: none;
    transition: border-color 0.15s ease;
}

input:focus, textarea:focus {
    border-color: var(--accent);
}

.alert {
    padding: 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-success {
    background-color: #ECFDF5;
    color: var(--success);
    border: 1px solid #A7F3D0;
}

.input-error {
    color: var(--danger);
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 4px;
}

.input-success {
    color: #16a34a;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 4px;
}

/* ==========================================================================
   FOOTER COMPONENT
   ========================================================================== */
.footer {
    background-color: #FFFFFF;
    border-top: 1px solid var(--border-color);
    padding: 60px 24px 30px 24px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    display: block;
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-legal-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0;
    transition: color 0.15s ease;
}

.footer-legal-btn:hover {
    color: var(--accent);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--border-light);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================================================
   GLOBAL GLASS MODAL LAYER ARCHITECTURE
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-card {
    background-color: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 440px;
    display: none;
    overflow: hidden;
}

.modal-card.modal-lg {
    max-width: 600px;
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.modal-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body {
    padding: 24px;
    max-height: 80vh;
    overflow-y: auto;
}

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

.mono-input {
    font-family: monospace !important;
    letter-spacing: 0.05em;
    text-align: center;
}

/* PREMIUM AUTH/LOGIN MODAL VARIANT */
.auth-modal-variant {
    max-width: 420px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 24px 48px -12px rgba(15, 23, 42, 0.16);
}

.auth-modal-body {
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
}

.auth-modal-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.auth-form-group {
    margin-bottom: 16px;
    width: 100%;
}

.auth-input-field {
    text-align: left;
    font-family: var(--font);
    font-size: 0.95rem;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    width: 100%;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.02);
}

.auth-input-field:focus {
    background-color: #FFFFFF;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
}

/* THREE CONTROLS STACK STYLING FOR LOGIN MODAL */
.auth-buttons-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    margin-top: 8px;
}

.auth-submit-btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    width: 100%;
}

.auth-pricing-btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    width: 100%;
}

.auth-helper-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 20px;
    line-height: 1.4;
}

/* CHECKOUT SPECIFIC UI MODALS */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.grid-span-2 {
    grid-column: span 2;
}

.payment-section {
    margin-top: 24px;
    border-top: 1px solid var(--border-light);
    padding-top: 24px;
}

.payment-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: block;
}

.payment-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.payment-tab {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.payment-tab label {
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.payment-tab.active {
    border-color: var(--accent);
    background-color: rgba(0, 82, 255, 0.02);
}

.payment-tab.disabled {
    background-color: var(--bg-surface);
    cursor: not-allowed;
    opacity: 0.6;
}

.payment-fields-wrapper {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ==========================================================================
   TRUST BADGES
   ========================================================================== */
.trust-badges {
    margin-top: 20px;
    text-align: center;
}

.trust-badge-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.trust-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.85;
    transition: opacity 0.2s;
}

.trust-badge:hover {
    opacity: 1;
}

.trust-text {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

/* ==========================================================================
   DYNAMIC DEMO STATE ARTWORKS
   ========================================================================== */
.demo-graphic-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 12px;
}

.demo-graphic-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.demo-chart-bar-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.demo-bar-fill-node {
    height: 32px;
    border-radius: var(--radius-sm);
    color: #FFFFFF;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    padding-left: 12px;
}

.demo-bar-fill-node.red { background-color: var(--danger); width: 100%; }
.demo-bar-fill-node.gray { background-color: var(--text-muted); width: 75%; }
.demo-bar-fill-node.green { background-color: var(--success); width: 50%; }

.demo-alert-strip {
    border-left: 4px solid var(--warning);
    background-color: #FFFBEB;
    padding: 12px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.demo-alert-strip h5 {
    color: #92400E;
    font-size: 0.9rem;
}

.demo-alert-strip p {
    color: #B45309;
    font-size: 0.8rem;
}

.demo-impact-metric {
    text-align: center;
    padding: 16px 0;
}

.demo-impact-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--success);
    line-height: 1;
}

.demo-impact-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ==========================================================================
   SUPPORT FLOATING CHAT SYSTEMS
   ========================================================================== */
.chat-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    font-family: var(--font);
}

.chat-toggle-btn {
    background-color: var(--text-primary);
    color: #FFFFFF;
    border: none;
    width: 56px;
    height: 56px;
    padding: 0;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.chat-toggle-btn:hover {
    transform: scale(1.02);
}

.chat-box-container {
    position: absolute;
    bottom: 60px;
    right: 0;
    width: 340px;
    height: 440px;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.chat-box-container.active {
    display: flex;
}

.chat-box-header {
    background-color: var(--text-primary);
    color: #FFFFFF;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-box-header h4 {
    font-size: 0.95rem;
}

.chat-box-header button {
    background: none;
    border: none;
    color: #FFFFFF;
    font-size: 1.4rem;
    cursor: pointer;
    line-height: 1;
}

.chat-box-messages {
    flex-grow: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background-color: var(--bg-surface);
}

.chat-bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    line-height: 1.4;
}

.chat-bubble.bot {
    background-color: #FFFFFF;
    color: var(--text-primary);
    align-self: flex-start;
    border: 1px solid var(--border-light);
}

.chat-bubble.user {
    background-color: var(--accent);
    color: #FFFFFF;
    align-self: flex-end;
}

.chat-box-footer {
    padding: 12px;
    border-top: 1px solid var(--border-color);
    background-color: #FFFFFF;
    display: flex;
    gap: 8px;
}

.chat-box-footer input {
    flex-grow: 1;
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    outline: none;
}

.chat-box-footer button {
    background-color: var(--accent);
    color: #FFFFFF;
    border: none;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS Matrix
   ========================================================================== */
@media (max-width: 1024px) {
    .pricing-grid, .features-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html { font-size: 15px; }
    .hero h1 { font-size: 2.6rem; }
    
    .pricing-grid, .features-grid, .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .menu-toggle {
        display: flex;
    }

    .nav-container {
        gap: 12px;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background-color: #FFFFFF;
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .btn-login-nav {
        font-size: 0.85rem;
        padding: 6px 14px;
        flex-shrink: 0;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 32px;
    }
}