/* 
 * NexusFlow SaaS Template - Main Stylesheet
 * Premium Startup Landing Page Template
 * Version: 1.0.0
 */

/* ===========================================
   Table of Contents
   1. CSS Reset & Base Styles
   2. Typography
   3. Colors & Variables
   4. Navigation
   5. Hero Section
   6. Features Section
   7. How It Works
   8. Screenshots
   9. Testimonials
   10. Pricing
   11. Team
   12. FAQ
   13. CTA Section
   14. Footer
   15. Components
   16. Utilities
   =========================================== */

/* 1. CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Account for fixed navbar */
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    padding-left: 20px;
    padding-right: 20px;
}

.section {
    padding: 100px 0;
}

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

.section-label {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #6366f1;
    background-color: rgba(99, 102, 241, 0.1);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #111827;
}

.section-description {
    font-size: 18px;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .section-description {
        font-size: 16px;
    }
}

/* 2. Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    color: #111827;
    line-height: 1.2;
}

h1 {
    font-size: 56px;
}

h2 {
    font-size: 48px;
}

h3 {
    font-size: 28px;
    margin-bottom: 15px;
}

h4 {
    font-size: 20px;
}

p {
    margin-bottom: 20px;
    color: #6b7280;
}

@media (max-width: 768px) {
    h1 {
        font-size: 40px;
    }
    
    h2 {
        font-size: 36px;
    }
    
    h3 {
        font-size: 24px;
    }
}

/* 3. Colors & Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --light: #f9fafb;
    --dark: #111827;
    --gray: #6b7280;
    --light-gray: #f3f4f6;
    --border: #e5e7eb;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

/* 4. Navigation */
.navbar {
    padding: 20px 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    font-weight: 700;
    border-radius: 8px;
    margin-right: 10px;
}

.brand-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 22px;
    color: #111827;
    text-shadow: 0px 0px 10px white;
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: #4b5563;
    margin: 0 8px;
    padding: 8px 16px;
    border-radius: 6px;
    transition: var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: #6366f1;
    background-color: rgba(99, 102, 241, 0.05);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    padding: 10px 24px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.2);
}

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
    padding: 10px 24px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
}

.btn-outline-primary:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* 5. Hero Section */
.hero-section {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0) 100%);
    clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 56px;
    margin-bottom: 24px;
    color: #111827;
}

.hero-description {
    font-size: 18px;
    color: #6b7280;
    margin-bottom: 32px;
    max-width: 90%;
}

.badge {
    display: inline-block;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.cta-form {
    max-width: 500px;
    margin-bottom: 30px;
}

.cta-form .input-group {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    overflow: hidden;
}

.cta-form .form-control {
    height: 60px;
    border: none;
    padding: 0 20px;
    font-size: 16px;
    border-radius: 12px 0 0 12px;
}

.cta-form .form-control:focus {
    box-shadow: none;
    border-color: var(--primary);
}

.cta-form .btn {
    height: 60px;
    padding: 0 30px;
    border-radius: 0 12px 12px 0;
    font-weight: 600;
    font-size: 16px;
}

.form-note {
    font-size: 14px;
    color: #9ca3af;
    margin-top: 10px;
    margin-bottom: 0;
}

.trust-badges {
    margin-top: 40px;
}

.trust-text {
    font-size: 14px;
    color: #9ca3af;
    margin-bottom: 15px;
}

.client-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    align-items: center;
}

.client-logos img {
    height: 30px;
    opacity: 0.7;
    transition: var(--transition);
    filter: grayscale(100%);
}

.client-logos img:hover {
    opacity: 1;
    filter: grayscale(0%);
}

.hero-image-wrapper {
    position: relative;
    z-index: 1;
}

.hero-image {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.hero-image:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.floating-card {
    position: absolute;
    background: white;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    color: var(--primary);
    font-size: 20px;
    margin-right: 10px;
}

.floating-card p {
    margin: 0;
    font-size: 14px;
    font-weight: 500;
}

.card-1 {
    top: -20px;
    right: 30px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 40px;
    left: -20px;
    animation-delay: 1.5s;
}

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

@media (max-width: 992px) {
    .hero-section {
        padding: 140px 0 80px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .hero-description {
        max-width: 100%;
    }
    
    .cta-form {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-image-wrapper {
        margin-top: 50px;
    }
}

/* 6. Features Section */
.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.feature-icon i {
    font-size: 28px;
    color: var(--primary);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

.feature-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.feature-list i {
    color: var(--secondary);
    margin-right: 10px;
    font-size: 14px;
}

/* 7. How It Works Section */
.how-it-works-section {
    background-color: var(--light);
}

.step-card {
    text-align: center;
    padding: 40px 30px;
    position: relative;
    height: 100%;
}

.step-number {
    font-family: 'Poppins', sans-serif;
    font-size: 72px;
    font-weight: 800;
    color: rgba(99, 102, 241, 0.1);
    line-height: 1;
    margin-bottom: 20px;
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
}

.step-card h3 {
    position: relative;
    z-index: 1;
    margin-top: 30px;
}

.step-card p {
    position: relative;
    z-index: 1;
    color: #6b7280;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 25px auto 0;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    border: 2px solid var(--border);
    position: relative;
    z-index: 1;
}

.step-icon i {
    font-size: 32px;
    color: var(--primary);
}

/* 8. Screenshots Section */
.screenshot-container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.screenshot-wrapper {
    position: relative;
    height: 500px;
    overflow: hidden;
    border-radius: 12px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.screenshot-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.5s ease;
    padding: 20px;
}

.screenshot-img.active {
    opacity: 1;
}

.screenshot-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.screenshot-btn {
    background: white;
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    text-align: left;
    flex: 1;
    max-width: 300px;
    transition: var(--transition);
    cursor: pointer;
}

.screenshot-btn:hover,
.screenshot-btn.active {
    border-color: var(--primary);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.1);
}

.screenshot-btn span {
    display: block;
    font-weight: 600;
    color: #111827;
    margin-bottom: 5px;
}

.screenshot-btn small {
    font-size: 14px;
    color: #6b7280;
}

@media (max-width: 768px) {
    .screenshot-wrapper {
        height: 350px;
    }
    
    .screenshot-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .screenshot-btn {
        width: 100%;
        max-width: 100%;
    }
}

/* 9. Testimonials Section */
.testimonial-card {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    height: 100%;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-rating {
    color: #fbbf24;
    margin-bottom: 20px;
}

.testimonial-rating i {
    margin-right: 2px;
}

.testimonial-text {
    font-size: 16px;
    font-style: italic;
    color: #4b5563;
    margin-bottom: 25px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author .author-info h4 {
    margin: 0;
    font-size: 18px;
    color: #111827;
}

.testimonial-author .author-info p {
    margin: 0;
    font-size: 14px;
    color: #9ca3af;
}

/* 10. Pricing Section */
.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    margin-bottom: 40px;
}

.pricing-toggle span {
    font-weight: 500;
    color: #6b7280;
}

.discount-badge {
    background-color: #10b981;
    color: white;
    padding: 2px 8px;
    border-radius: 50px;
    font-size: 12px;
    margin-left: 5px;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

.pricing-card {
    background: white;
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    border: 2px solid var(--border);
    height: 100%;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    padding: 6px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border);
}

.pricing-header h3 {
    font-size: 28px;
    color: #111827;
    margin-bottom: 10px;
}

.pricing-header p {
    color: #6b7280;
    margin-bottom: 20px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.currency {
    font-size: 24px;
    font-weight: 600;
    color: #111827;
    margin-right: 2px;
}

.amount {
    font-family: 'Poppins', sans-serif;
    font-size: 64px;
    font-weight: 700;
    color: #111827;
    line-height: 1;
}

.period {
    font-size: 18px;
    color: #6b7280;
    margin-left: 5px;
}

.pricing-features {
    margin-bottom: 30px;
}

.pricing-features ul {
    list-style: none;
    padding: 0;
}

.pricing-features li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.pricing-features i {
    color: var(--secondary);
    margin-right: 12px;
    font-size: 16px;
}

.pricing-footer {
    margin-top: auto;
}

.pricing-note {
    text-align: center;
    font-size: 16px;
    color: #6b7280;
}

@media (max-width: 992px) {
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }
}

/* 11. Team Section */
.team-card {
    text-align: center;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.team-image {
    height: 200px;
    overflow: hidden;
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.team-card:hover .team-image img {
    transform: scale(1.05);
}

.team-info {
    padding: 30px;
}

.team-role {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.team-bio {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 20px;
    line-height: 1.6;
}

.team-social {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.team-social a {
    width: 36px;
    height: 36px;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    transition: var(--transition);
    text-decoration: none;
}

.team-social a:hover {
    background: var(--primary);
    color: white;
}

/* 12. FAQ Section */
.faq-section {
    background-color: var(--light);
}

.accordion-item {
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
}

.accordion-button {
    padding: 25px;
    font-weight: 600;
    font-size: 18px;
    color: #111827;
    background: white;
    box-shadow: none;
}

.accordion-button:not(.collapsed) {
    color: var(--primary);
    background: white;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--primary);
}

.accordion-body {
    padding: 0 25px 25px;
    color: #6b7280;
    line-height: 1.8;
}

/* 13. CTA Section */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
}

.cta-wrapper {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 60px;
}

.cta-title {
    color: white;
    font-size: 42px;
    margin-bottom: 20px;
}

.cta-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 18px;
    margin-bottom: 0;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary);
    border-color: white;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
}

.cta-section .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.cta-note {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-top: 10px;
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .cta-wrapper {
        padding: 40px 30px;
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .cta-description {
        font-size: 16px;
        margin-bottom: 30px;
    }
}

/* 14. Footer */
.footer {
    background-color: #111827;
    color: white;
    padding: 80px 0 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-description {
    color: #9ca3af;
    margin-bottom: 30px;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
    text-decoration: none;
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer h4 {
    color: white;
    font-size: 18px;
    margin-bottom: 25px;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    color: #9ca3af;
    margin-bottom: 0;
}

.footer-note {
    color: #9ca3af;
    font-size: 14px;
    margin-bottom: 0;
}

/* 15. Components */
.badge {
    display: inline-block;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
}

/* 16. Utilities */
.text-gradient {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    .text-center-mobile {
        text-align: center;
    }
}