/* CSS Variables for Maintainability */
:root {
    --primary-color: #0052FF;
    --primary-hover: #003ECC;
    --secondary-color: #00D66C;
    --secondary-hover: #00B359;
    --bg-dark: #0B0F19;
    --bg-card: #161C2E;
    --bg-light: #F8FAFC;
    --text-color: #0F172A;
    --text-muted: #64748B;
    --text-light: #F8FAFC;
    --border-color: #E2E8F0;
    --border-dark: #2A3447;
    --radius-sm: 8px;
    --radius-md: 16px;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Reset & Basic Setup */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    background-color: var(--bg-light);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

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

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

.btn-secondary {
    background-color: var(--secondary-color);
    color: #000000;
}

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

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
}

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

.brand-logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-color);
    text-decoration: none;
}

.brand-logo span {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 24px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #0B0F19 0%, #1A233A 100%);
    color: var(--text-light);
    padding: 100px 0 80px 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 0.875rem;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #94A3B8;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-trust {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 0.875rem;
    color: #94A3B8;
}

/* Plans Section */
.plans-section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.plan-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.plan-featured {
    border: 2px solid var(--primary-color);
    box-shadow: 0 8px 30px rgba(0, 82, 255, 0.12);
}

.card-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--primary-color);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 12px;
}

.plan-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.plan-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.plan-price {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 24px;
}

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

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

.plan-features li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9375rem;
}

.buy-btn {
    width: 100%;
}

/* Voice Addon Box */
.voice-addon {
    background: #161C2E;
    color: var(--text-light);
    padding: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.voice-addon-content h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.voice-addon-content p {
    color: #94A3B8;
}

.voice-addon-action {
    display: flex;
    align-items: center;
    gap: 16px;
}

.addon-price {
    font-size: 1.25rem;
    font-weight: 700;
}

/* How Section */
.how-section {
    background-color: #F1F5F9;
    padding: 80px 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.step-card {
    background: #FFFFFF;
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 20px auto;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding: 40px 0;
    border-top: 1px solid var(--border-dark);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand p {
    font-size: 0.875rem;
    color: #64748B;
    margin-top: 8px;
}

/* Mobile Responsive Adjustments */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        display: none;
    }

    .voice-addon {
        flex-direction: column;
        align-items: flex-start;
    }
}