/* ===================================
   Context.ai - Pricing Page
   Premium SaaS Pricing Layout
   =================================== */

:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-300: #93c5fd;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;
    
    --green-500: #10b981;
    --purple-500: #8b5cf6;
    
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --spacing: 8px;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

/* ===================================
   Navigation
   =================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    padding: calc(var(--spacing) * 2.5) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing) * 4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1.5);
    text-decoration: none;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 4);
}

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--blue-600);
}

.btn-nav-cta {
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
    color: var(--white);
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.25);
}

.btn-nav-cta:hover {
    transform: translateY(-2px);
}

/* ===================================
   Pricing Hero
   =================================== */

.pricing-hero {
    padding: calc(var(--spacing) * 20) calc(var(--spacing) * 4) calc(var(--spacing) * 8);
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
    text-align: center;
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
}

.brain-motif {
    width: 160px;
    height: 160px;
    margin: 0 auto calc(var(--spacing) * 3);
}

.minimal-brain {
    width: 100%;
    height: 100%;
    animation: gentleFloat 6s ease-in-out infinite;
}

@keyframes gentleFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.pricing-title {
    font-size: 52px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: calc(var(--spacing) * 2);
    letter-spacing: -0.02em;
}

.pricing-subtitle {
    font-size: 20px;
    color: var(--gray-600);
    font-weight: 400;
}

/* ===================================
   Pricing Cards
   =================================== */

.pricing-section {
    padding: calc(var(--spacing) * 10) calc(var(--spacing) * 4);
    background: var(--gray-50);
}

.pricing-container {
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--spacing) * 4);
    align-items: start;
}

.pricing-card {
    background: var(--white);
    border-radius: 20px;
    padding: calc(var(--spacing) * 5);
    border: 2px solid var(--gray-200);
    transition: all 0.4s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--blue-300);
}

/* Featured Card */
.pricing-card.featured {
    border-color: var(--blue-500);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-md);
}

/* Card Header */
.card-header {
    margin-bottom: calc(var(--spacing) * 4);
}

.plan-name {
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: calc(var(--spacing) * 1);
}

.plan-description {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.5;
}

/* Card Price */
.card-price {
    display: flex;
    align-items: baseline;
    margin-bottom: calc(var(--spacing) * 1.5);
}

.currency {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
    margin-right: 4px;
}

.amount {
    font-size: 64px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.period {
    font-size: 18px;
    color: var(--gray-600);
    font-weight: 500;
    margin-left: 8px;
}

.card-price.custom .amount {
    font-size: 48px;
}

.card-billing {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: calc(var(--spacing) * 4);
}

/* Card CTA */
.card-cta {
    width: 100%;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: calc(var(--spacing) * 4);
    background: var(--white);
    border: 2px solid var(--blue-600);
    color: var(--blue-600);
}

.card-cta:hover {
    background: var(--blue-50);
    transform: translateY(-2px);
}

.card-cta.primary {
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
    border-color: transparent;
    color: var(--white);
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.3);
}

.card-cta.primary:hover {
    box-shadow: 0 15px 35px -10px rgba(59, 130, 246, 0.4);
}

/* Card Features */
.card-features {
    flex: 1;
}

.features-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: calc(var(--spacing) * 2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 2);
}

.features-list li {
    display: flex;
    align-items: start;
    gap: calc(var(--spacing) * 1.5);
    font-size: 15px;
    color: var(--gray-700);
    line-height: 1.5;
}

.features-list svg {
    flex-shrink: 0;
    margin-top: 2px;
}

/* ===================================
   Enterprise CTA Section
   =================================== */

.enterprise-cta {
    padding: calc(var(--spacing) * 12) calc(var(--spacing) * 4);
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
}

.cta-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: calc(var(--spacing) * 8);
    align-items: center;
}

.cta-content {
    color: var(--white);
}

.cta-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: calc(var(--spacing) * 2);
    line-height: 1.2;
}

.cta-text {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing) * 2);
    opacity: 0.95;
}

.cta-description {
    font-size: 16px;
    line-height: 1.7;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 2);
}

.btn-enterprise-primary {
    width: 100%;
    background: var(--white);
    color: var(--blue-600);
    border: none;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-enterprise-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.3);
}

.btn-enterprise-secondary {
    width: 100%;
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-enterprise-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===================================
   FAQ Section
   =================================== */

.faq-section {
    padding: calc(var(--spacing) * 15) calc(var(--spacing) * 4);
    background: var(--white);
}

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

.faq-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: calc(var(--spacing) * 8);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--spacing) * 5);
}

.faq-item {
    padding: calc(var(--spacing) * 4);
    background: var(--gray-50);
    border-radius: 16px;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
}

.faq-item:hover {
    background: var(--white);
    border-color: var(--blue-300);
    box-shadow: var(--shadow-lg);
}

.faq-question {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: calc(var(--spacing) * 1.5);
}

.faq-answer {
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray-600);
}

/* ===================================
   Final CTA
   =================================== */

.final-cta {
    padding: calc(var(--spacing) * 15) calc(var(--spacing) * 4);
    background: var(--gray-50);
    text-align: center;
}

.final-cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.final-cta-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: calc(var(--spacing) * 2);
}

.final-cta-text {
    font-size: 20px;
    color: var(--gray-600);
    margin-bottom: calc(var(--spacing) * 5);
}

.btn-final-cta {
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
    color: var(--white);
    border: none;
    padding: 18px 40px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.3);
}

.btn-final-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px -10px rgba(59, 130, 246, 0.4);
}

.final-cta-note {
    margin-top: calc(var(--spacing) * 3);
    font-size: 14px;
    color: var(--gray-500);
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 1200px) {
    .pricing-container {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
    
    .cta-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links a:not(.btn-nav-cta) {
        display: none;
    }
    
    .pricing-title {
        font-size: 36px;
    }
    
    .cta-title,
    .faq-title,
    .final-cta-title {
        font-size: 32px;
    }
}

/* ===================================
   Animations
   =================================== */

.pricing-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.pricing-card:nth-child(1) {
    animation-delay: 0.1s;
}

.pricing-card:nth-child(2) {
    animation-delay: 0.2s;
}

.pricing-card:nth-child(3) {
    animation-delay: 0.3s;
}

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

.faq-item {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.faq-item.visible {
    opacity: 1;
    transform: translateY(0);
}