/* ===== Variables ===== */
:root {
    --primary-color: #6C5CE7;
    --secondary-color: #00B894;
    --accent-color: #FD79A8;
    --warning-color: #FDCB6E;
    --info-color: #74B9FF;
    --danger-color: #FF7675;
    --text-dark: #2D3436;
    --text-light: #636E72;
    --light-bg: #F8F9FA;
    --card-bg: #FFFFFF;
    --border-color: #DFE6E9;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
}

.logo img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 92, 231, 0.3);
}

.btn-secondary {
    background: var(--light-bg);
    color: var(--text-dark);
}

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

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

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* ===== Hero Section ===== */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #F8F9FA 0%, #E9ECEF 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.badge-new {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

/* ===== Mockup ===== */
.mockup-container {
    position: relative;
}

.mockup-chat {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.mockup-header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mockup-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.mockup-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.mockup-status {
    font-size: 0.9rem;
    opacity: 0.9;
}

.mockup-messages {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 300px;
}

.mockup-message {
    display: flex;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mockup-message.sent {
    justify-content: flex-end;
}

.mockup-bubble {
    max-width: 70%;
    padding: 1rem 1.25rem;
    border-radius: 18px;
}

.mockup-message.received .mockup-bubble {
    background: var(--light-bg);
}

.mockup-message.sent .mockup-bubble {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.mockup-file {
    display: flex;
    gap: 1rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.75rem;
    border-radius: 12px;
}

.mockup-file-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.mockup-file-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.mockup-file-size {
    font-size: 0.75rem;
    opacity: 0.8;
}

.mockup-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.2) 0%, transparent 70%);
    z-index: -1;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

/* ===== Sections ===== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* ===== Features ===== */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ===== File Types ===== */
.file-types {
    background: var(--light-bg);
}

.file-types-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 2rem;
}

.file-type-card {
    background: white;
    padding: 2rem 1rem;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
}

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

.file-type-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    margin: 0 auto 1rem;
}

.file-type-icon.pdf {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.file-type-icon.image {
    background: linear-gradient(135deg, #6C5CE7, #A29BFE);
}

.file-type-icon.word {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
}

.file-type-icon.excel {
    background: linear-gradient(135deg, #27ae60, #1e8449);
}

.file-type-icon.zip {
    background: linear-gradient(135deg, #f39c12, #d68910);
}

.file-type-icon.text {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
}

.file-type-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.file-type-card p {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===== Benefits ===== */
.benefits {
    background: white;
}

.benefits-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.benefit-item {
    display: flex;
    gap: 1.5rem;
}

.benefit-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--secondary-color), #55EFC4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.benefit-text h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.benefit-text p {
    color: var(--text-light);
    line-height: 1.8;
}

.benefits-card {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    padding: 2rem;
    border-radius: 20px;
    color: white;
}

.benefits-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.benefits-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.benefits-stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.benefits-stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.benefits-stat-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

.benefits-stat-fill {
    height: 100%;
    background: white;
    border-radius: 4px;
    animation: fillBar 2s ease-out;
}

@keyframes fillBar {
    from { width: 0; }
}

/* ===== Demo ===== */
.demo {
    background: var(--light-bg);
}

.demo-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.demo-step {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    position: relative;
}

.demo-step::after {
    content: '→';
    position: absolute;
    right: -2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    color: var(--primary-color);
}

.demo-step:last-child::after {
    display: none;
}

.demo-step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    font-size: 1.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.demo-step h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.demo-step p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== CTA ===== */
.cta {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand img {
    width: 60px;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .file-types-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .benefits-content {
        grid-template-columns: 1fr;
    }
    
    .demo-steps {
        grid-template-columns: 1fr;
    }
    
    .demo-step::after {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
}