/* Variables & Reset */
:root {
    /* Colors */
    --primary-color: #25D366; /* WhatsApp Green */
    --primary-dark: #128C7E;
    --primary-light: #DCF8C6;
    --secondary-color: #34B7F1;
    
    --bg-dark: #0a0a0a;
    --bg-card: #161616;
    --bg-card-hover: #1f1f1f;
    
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --text-inverse: #111111;
    
    --border-color: #333333;
    
    /* Gradients */
    --gradient-main: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    --gradient-glow: radial-gradient(circle, rgba(37, 211, 102, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    
    /* Spacing & Layout */
    --container-width: 1200px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 15px;
}

.section-padding {
    padding: 100px 0;
}

.text-center {
    text-align: center;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

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

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

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.full-width {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
}

.logo img {
    height: 40px;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-list a {
    color: var(--text-muted);
    font-weight: 500;
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
}

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

.hero-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    z-index: -1;
    pointer-events: none;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(37, 211, 102, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(37, 211, 102, 0.2);
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Hero Mockup */
.mockup-wrapper {
    position: relative;
    perspective: 1000px;
}

.mockup-screen {
    position: relative;
    border-radius: var(--radius-md);
    overflow: visible;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.mockup-screen:hover {
    transform: rotateY(0) rotateX(0);
}

.dashboard-img {
    border-radius: var(--radius-md);
    width: 100%;
    height: auto;
}

.floating-card {
    position: absolute;
    background: var(--bg-card);
    padding: 15px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    animation: float 6s ease-in-out infinite;
    z-index: 10;
}

.card-1 {
    top: 10%;
    left: -30px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 15%;
    right: -30px;
    animation-delay: 2s;
}

.floating-card i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.floating-card div {
    display: flex;
    flex-direction: column;
}

.floating-card span {
    font-weight: 600;
    font-size: 0.9rem;
}

.floating-card small {
    font-size: 0.8rem;
    color: var(--text-muted);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Features Grid */
.section-header {
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(37, 211, 102, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Detailed Features */
.details {
    background: linear-gradient(to bottom, var(--bg-dark), #0f0f0f);
}

.detail-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 100px;
}

.detail-row:last-child {
    margin-bottom: 0;
}

.detail-row.reverse {
    direction: rtl;
}

.detail-row.reverse .detail-content {
    direction: ltr;
}

.detail-content h3 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.detail-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.detail-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.detail-list li i {
    color: var(--primary-color);
}

.detail-image img {
    border-radius: var(--radius-md);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
}

/* Pricing */
.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.toggle-label {
    font-weight: 600;
    font-size: 1.1rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-card-hover);
    transition: .4s;
    border: 1px solid var(--border-color);
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

.discount-badge {
    background: #FF5252;
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    vertical-align: super;
    margin-left: 5px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.pricing-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 40px;
    position: relative;
    transition: var(--transition-normal);
}

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

.pricing-card.featured {
    border-color: var(--primary-color);
    background: linear-gradient(to bottom, rgba(37, 211, 102, 0.05), var(--bg-card));
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--text-inverse);
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

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

.card-header h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.card-header p {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.price .currency {
    font-size: 1.5rem;
    vertical-align: top;
    font-weight: 600;
}

.price .amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.price .period {
    font-size: 1rem;
    color: var(--text-muted);
}

.feature-list {
    margin-bottom: 30px;
}

.feature-list li {
    margin-bottom: 15px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-list li i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.feature-list li strong {
    color: var(--text-main);
}

/* FAQ */
.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 20px 0;
    text-align: left;
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding-bottom: 20px;
    color: var(--text-muted);
}

/* CTA Footer */
.cta-footer {
    background: var(--gradient-main);
    padding: 80px 0;
    color: var(--text-inverse);
}

.cta-footer h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-footer p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-footer .btn {
    background: var(--text-inverse);
    color: var(--primary-color);
    border-color: var(--text-inverse);
}

.cta-footer .btn:hover {
    background: transparent;
    color: var(--text-inverse);
}

/* Footer */
.footer {
    padding: 80px 0 30px;
    background: #050505;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col p {
    color: var(--text-muted);
    margin: 20px 0;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--text-muted);
}

.footer-col ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-description {
        margin: 0 auto 40px;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .detail-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .detail-row.reverse {
        direction: ltr;
    }
    
    .detail-row.reverse .detail-content {
        direction: ltr;
    }
    
    .detail-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--bg-dark);
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-list {
        flex-direction: column;
        text-align: center;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .header-actions .btn {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}