/* =====================================================
   SAKURA V3 - Optimized Premium WhatsApp Bot Landing Page
   Creator: EMPEROR SUKUNA | Year: 2025
   Performance Optimized & Card Overlap Fixed
   ===================================================== */

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

:root {
    /* Colors - Streamlined Premium Theme */
    --primary-black: #000000;
    --secondary-black: #111111;
    --tertiary-black: #1a1a1a;
    --primary-red: #ff0040;
    --secondary-red: #cc0033;
    --accent-red: #ff3366;
    --neon-pink: #ff006e;
    --electric-blue: #00d4ff;
    --text-white: #ffffff;
    --text-gray: #b3b3b3;
    --text-light-gray: #e6e6e6;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 0, 64, 0.2);
    --premium-gradient: linear-gradient(135deg, var(--primary-red), var(--neon-pink));
    --card-shadow: 0 10px 30px rgba(255, 0, 64, 0.1);
    --card-shadow-hover: 0 15px 40px rgba(255, 0, 64, 0.15);
    
    /* Typography */
    --font-primary: 'Orbitron', monospace;
    --font-secondary: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    --border-radius: 12px;
    --border-radius-large: 20px;
    
    /* Simplified Animations */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}

/* Global Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    background: var(--primary-black);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* Simplified Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(45deg, var(--primary-black), var(--secondary-black));
    overflow: hidden;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

.particles::before {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--primary-red);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
    box-shadow: 
        100px 200px var(--accent-red),
        300px 100px var(--primary-red),
        500px 300px var(--accent-red);
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.3; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 0.6; }
}

.wave-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100px;
    background: linear-gradient(90deg, transparent, var(--primary-red), transparent);
    border-radius: 50%;
    opacity: 0.1;
    animation: wave 6s ease-in-out infinite;
}

.wave2 { animation-delay: -2s; opacity: 0.05; }
.wave3 { animation-delay: -4s; opacity: 0.03; }

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

/* Navigation - Optimized */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-fast);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 24px;
    font-weight: 900;
    background: var(--premium-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-version {
    font-family: var(--font-primary);
    font-size: 12px;
    color: var(--accent-red);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-red);
    transition: var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    transition: var(--transition-fast);
}

/* Hero Section - Optimized */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--section-padding);
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero-content {
    z-index: 10;
}

.hero-badge {
    display: inline-block;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 8px 20px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.badge-text {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--premium-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
}

.title-main {
    background: var(--premium-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-version {
    color: var(--accent-red);
    font-size: 24px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-light-gray);
}

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

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.cta-button.primary {
    background: var(--premium-gradient);
    color: var(--text-white);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--card-shadow-hover);
}

.cta-button.secondary {
    background: var(--glass-bg);
    color: var(--text-white);
    border: 1px solid var(--glass-border);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.button-arrow {
    transition: var(--transition-fast);
}

.cta-button.primary:hover .button-arrow {
    transform: translateX(5px);
}

/* Hero Visual - Simplified Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: var(--secondary-black);
    border-radius: 30px;
    border: 3px solid var(--glass-border);
    padding: 20px;
    position: relative;
    box-shadow: var(--card-shadow);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--primary-black);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}

.chat-interface {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: var(--premium-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.chat-name {
    font-weight: 600;
    font-size: 14px;
}

.chat-status {
    font-size: 12px;
    color: var(--text-gray);
}

.chat-messages {
    flex: 1;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    display: flex;
}

.bot-message {
    justify-content: flex-start;
}

.user-message {
    justify-content: flex-end;
}

.message-bubble {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 15px;
    font-size: 12px;
    line-height: 1.4;
}

.bot-message .message-bubble {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

.user-message .message-bubble {
    background: var(--primary-red);
    color: var(--text-white);
}

.typing-indicator {
    display: flex;
    justify-content: flex-start;
    padding: 10px 15px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--text-gray);
    border-radius: 50%;
    margin: 0 2px;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.3; }
    30% { transform: translateY(-10px); opacity: 1; }
}

/* Features Section - Fixed Card Layout */
.features {
    padding: var(--section-padding);
    position: relative;
}

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

.section-title {
    font-family: var(--font-primary);
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--premium-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-large);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition-medium);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
    height: fit-content;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--premium-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: var(--text-white);
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-white);
}

.feature-description {
    color: var(--text-gray);
    line-height: 1.6;
    font-size: 14px;
}

/* Testimonials Section - Improved Layout */
.testimonials {
    padding: var(--section-padding);
    background: var(--secondary-black);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.testimonial-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-large);
    padding: 30px;
    backdrop-filter: blur(10px);
    transition: var(--transition-medium);
}

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

.testimonial-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.stars {
    color: #ffd700;
    margin-bottom: 20px;
    font-size: 18px;
}

.testimonial-content p {
    flex: 1;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 25px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--premium-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.author-name {
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 5px;
}

.author-role {
    font-size: 14px;
    color: var(--text-gray);
}

/* FAQ Section - Improved Spacing */
.faq {
    padding: var(--section-padding);
}

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

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: var(--transition-fast);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.05);
}

.faq-icon {
    transition: var(--transition-fast);
    color: var(--primary-red);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition-medium);
    border-top: 1px solid var(--glass-border);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 25px 30px;
    color: var(--text-gray);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--secondary-black);
    padding: 60px 0 30px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-description {
    color: var(--text-gray);
    line-height: 1.6;
    max-width: 400px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-red);
    border-color: var(--primary-red);
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-section h4 {
    color: var(--text-white);
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-section a {
    display: block;
    color: var(--text-gray);
    text-decoration: none;
    margin-bottom: 10px;
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--text-white);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--glass-border);
}

.footer-copyright {
    color: var(--text-gray);
}

.footer-copyright strong {
    color: var(--primary-red);
}

.footer-support {
    margin-top: 10px;
}

.footer-support a {
    color: var(--primary-red);
    text-decoration: none;
}

.footer-support a:hover {
    text-decoration: underline;
}

/* Responsive Design - Improved */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        gap: 40px;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    .hero-cta {
        flex-direction: column;
        gap: 15px;
    }
}

/* Performance Improvements */
* {
    will-change: auto;
}

.feature-card,
.testimonial-card,
.cta-button {
    contain: layout style paint;
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Additional CSS for navbar scrolled state and responsive improvements */
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.98);
    box-shadow: 0 2px 20px rgba(255, 0, 64, 0.1);
}

/* Mobile navigation styles */
@media (max-width: 768px) {
    .nav-menu.active {
        display: flex;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        padding: 20px;
        border-top: 1px solid var(--glass-border);
        backdrop-filter: blur(10px);
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Loading states */
body:not(.loaded) * {
    transition: none !important;
}

/* Focus styles for accessibility */
.faq-question:focus,
.nav-link:focus,
.cta-button:focus {
    outline: 2px solid var(--primary-red);
    outline-offset: 2px;
}

/* Improved card hover effects */
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-red);
}

.testimonial-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow);
}