/* Modern Reset and Root Profiles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

:root {
    --primary: #3498db;
    --primary-hover: #2980b9;
    --success: #2ecc71;
    --success-hover: #27ae60;
    --dark: #2c3e50;
    --light-bg: #f8fafc;
    --card-border: #e2e8f0;
    --text-main: #334155;
    --text-muted: #64748b;
}

body {
    background-color: var(--light-bg);
    color: var(--text-main);
    line-height: 1.6;
    scroll-behavior: smooth;
}

/* Container Limit Wrapper */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- NAVIGATION SECTION --- */
header {
    background: #ffffff;
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--dark);
    font-weight: 700;
    font-size: 24px;
}

.brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease-in-out;
    cursor: pointer;
    border: none;
    width: 100%;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: #ffffff;
}

.btn-success {
    background-color: var(--success);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.2);
}

.btn-success:hover {
    background-color: var(--success-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(46, 204, 113, 0.3);
}

.textarea {
  background-color: #dddddd;
  color: #666666;
  padding: 1em;
  border-radius: 10px;
  border: 2px solid transparent;
  outline: none;
  font-size: 16px;
  transition: all 0.2s;
}

.textarea:hover {
  cursor: pointer;
  background-color: #eeeeee;
}

.textarea:focus {
  cursor: text;
  color: #333333;
  background-color: white;
  border-color: #333333;
}

/* --- HERO SPLIT MATRIX SECTION --- */
.hero {
    background: #ffffff;
    padding: 60px 0 80px 0;
    border-bottom: 1px solid var(--card-border);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

@media (max-width: 768px) {
    .hero-grid {
grid-template-columns: 1fr;
text-align: center;
    }
}

.hero-text h1 {
    font-size: 44px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 18px;
}

.hero-text h1 span {
    color: var(--primary);
}

.hero-text p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.hero-text .btn {
    width: auto;
    font-size: 18px;
    padding: 16px 36px;
}

/* Simulated Application Mockup Interface Layout Frame */
.hero-mockup {
    background: #1e293b;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    padding: 16px;
    border: 1px solid #334155;
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 14px;
}

.mockup-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

.mockup-body {
    background: #0f172a;
    border-radius: 6px;
    padding: 24px;
    color: #94a3b8;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
}

.mockup-line {
    margin-bottom: 8px;
}

.mockup-accent {
    color: var(--success);
}

/* --- UTILITY BEHAVIOR FEATURES GRID --- */
.features {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.section-title h2 {
    font-size: 32px;
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 12px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 16px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    background: #ffffff;
    border: 1px solid var(--card-border);
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

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

.feature-card h3 {
    font-size: 20px;
    color: var(--dark);
    margin-bottom: 10px;
}

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

/* --- THREE-TIERED PRICING MATRIX SECTION --- */
.pricing-section {
    padding: 60px 0 100px 0;
    background-color: #ffffff;
    border-top: 1px solid var(--card-border);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: stretch;
    margin-top: 40px;
}

.pricing-card {
    background: var(--light-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.05);
}

/* Visual Anchor Pop-Out Layer for Pro Tier */
.pricing-card.popular {
    background: #ffffff;
    border: 2px solid var(--primary);
    box-shadow: 0 15px 35px rgba(52, 152, 219, 0.1);
    transform: scale(1.03);
}

.pricing-card.popular:hover {
    transform: scale(1.03) translateY(-4px);
    box-shadow: 0 20px 40px rgba(52, 152, 219, 0.15);
}

.badge {
    position: absolute;
    top: 16px;
    right: 20px;
    background: var(--primary);
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tier-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.pricing-card.popular .tier-name {
    color: var(--primary);
}

.tier-price {
    font-size: 48px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 6px;
    display: flex;
    align-items: baseline;
}

.tier-price span {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 4px;
}

.tier-description {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
    min-height: 44px;
}

.feature-list {
    list-style: none;
    margin-bottom: 36px;
    flex-grow: 1;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: var(--text-main);
    margin-bottom: 12px;
}

.feature-item::before {
    content: "✓";
    color: var(--success);
    font-weight: 700;
    font-size: 16px;
}

.feature-item.disabled {
    color: var(--text-muted);
    opacity: 0.6;
}

.feature-item.disabled::before {
    content: "✕";
    color: #ef4444;
}

.pricing-footer-note {
    text-align: center;
    margin-top: 40px;
    font-size: 14px;
    color: var(--text-muted);
}

footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--card-border);
    background: var(--light-bg);
    font-size: 14px;
    color: var(--text-muted);
}