/* DeceMSG Website Styles */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --accent: #8b5cf6;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --success: #22c55e;
    --white: #ffffff;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-bubble {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(14, 165, 233, 0.05));
    animation: float 20s infinite ease-in-out;
}

.bg-bubble:nth-child(1) { width: 400px; height: 400px; top: -100px; left: -100px; animation-delay: 0s; }
.bg-bubble:nth-child(2) { width: 300px; height: 300px; top: 50%; right: -50px; animation-delay: -5s; }
.bg-bubble:nth-child(3) { width: 200px; height: 200px; bottom: 10%; left: 10%; animation-delay: -10s; }
.bg-bubble:nth-child(4) { width: 350px; height: 350px; bottom: -100px; right: 20%; animation-delay: -15s; }
.bg-bubble:nth-child(5) { width: 250px; height: 250px; top: 30%; left: 50%; animation-delay: -7s; }

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(50px, 50px) rotate(5deg); }
    50% { transform: translate(0, 100px) rotate(0deg); }
    75% { transform: translate(-50px, 50px) rotate(-5deg); }
}

/* Navigation */
nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    transition: transform 0.3s;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:not(.btn-github):hover {
    color: var(--primary);
}

.nav-links a:not(.btn-github)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-links a:not(.btn-github):hover::after {
    width: 100%;
}

.btn-github {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--dark);
    color: white !important;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-github:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Header */
header {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 50%, var(--secondary) 100%);
    color: white;
    padding: 160px 0 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

header .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: left;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

header h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.1;
    display: flex;
    align-items: center;
    gap: 16px;
}

.hero-icon {
    font-size: 4.5rem;
    animation: bounce 2s infinite;
}

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

.tagline {
    font-size: 1.5rem;
    opacity: 0.95;
    margin-bottom: 32px;
    line-height: 1.6;
}

.highlight {
    color: #fef08a;
}

.highlight.gradient {
    background: linear-gradient(90deg, #fef08a, #fcd34d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.badges img {
    height: 24px;
    border-radius: 4px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-large {
    padding: 20px 40px;
    font-size: 1.1rem;
}

/* Chat Preview Visual */
.hero-visual {
    position: relative;
}

.chat-preview {
    background: var(--white);
    border-radius: 20px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s;
}

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

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: #f1f5f9;
    border-bottom: 1px solid #e2e8f0;
}

.chat-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 600;
    color: var(--dark);
    font-size: 1rem;
}

.chat-members {
    font-size: 0.8rem;
    color: var(--gray);
}

.chat-messages {
    padding: 20px;
    height: 320px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: #fafafa;
}

.message {
    display: flex;
    gap: 10px;
    max-width: 85%;
}

.message.received {
    align-self: flex-start;
}

.message.sent {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.message-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.message-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray);
}

.message-bubble {
    background: var(--white);
    padding: 12px 16px;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    font-size: 0.95rem;
    line-height: 1.5;
}

.message.sent .message-bubble {
    background: var(--primary);
    color: white;
}

.message-time {
    font-size: 0.7rem;
    color: var(--gray-light);
}

.chat-input {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    background: var(--white);
    border-top: 1px solid #e2e8f0;
}

.chat-input input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 0.95rem;
    transition: border-color 0.3s;
}

.chat-input input:focus {
    outline: none;
    border-color: var(--primary);
}

.send-btn {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.send-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    padding: 10px 16px;
    border-radius: 50px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    font-weight: 600;
    font-size: 0.875rem;
    animation: floatBadge 3s ease-in-out infinite;
}

.badge-1 {
    top: -20px;
    right: -30px;
    color: var(--success);
    animation-delay: 0s;
}

.badge-2 {
    bottom: 40px;
    left: -40px;
    color: var(--accent);
    animation-delay: 1.5s;
}

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

/* Animations */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Sections */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-alt {
    background: var(--white);
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 60px;
    color: var(--dark);
}

.title-icon {
    font-size: 2.8rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    position: relative;
    background: var(--white);
    padding: 40px 32px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 60px rgba(99, 102, 241, 0.15);
    border-color: var(--primary-light);
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s;
}

.feature-card:hover .feature-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon {
    font-size: 2.5rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--dark);
}

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

.feature-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.feature-card:hover .feature-glow {
    opacity: 1;
}

/* Quick Start Steps */
.steps-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--dark);
}

/* Code Blocks */
.code-block {
    background: var(--darker);
    border-radius: 16px;
    padding: 24px;
    overflow-x: auto;
    text-align: left;
}

.code-block h3, .code-block h4 {
    color: var(--success);
    margin-bottom: 16px;
    font-size: 1rem;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    color: #e2e8f0;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

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

.screenshot-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s;
}

.screenshot-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.12);
}

.screenshot {
    height: 200px;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshot-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--gray);
}

.placeholder-icon {
    font-size: 3rem;
    opacity: 0.5;
}

.screenshot-card h4 {
    padding: 20px 20px 8px;
    font-size: 1.1rem;
    color: var(--dark);
}

.screenshot-card p {
    padding: 0 20px 20px;
    color: var(--gray);
    font-size: 0.9rem;
}

/* AI Section */
.ai-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.ai-intro {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 32px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid #f1f5f9;
    font-size: 1rem;
}

.list-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--success), #16a34a);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* Security Grid */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.security-card {
    background: var(--white);
    padding: 40px 24px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.4s;
}

.security-card:hover {
    border-color: var(--primary-light);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.1);
}

.security-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.security-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.security-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Support Section */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.support-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 40px 30px;
    background: var(--white);
    border-radius: 20px;
    text-decoration: none;
    color: inherit;
    border: 2px solid transparent;
    transition: all 0.4s;
}

.support-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.15);
}

.support-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.support-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--dark);
}

.support-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Comparison Table */
.compare-table {
    max-width: 900px;
    margin: 0 auto;
    overflow-x: auto;
}

.compare-table table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.compare-table th, .compare-table td {
    padding: 20px 24px;
    text-align: center;
    border-bottom: 1px solid #f1f5f9;
}

.compare-table th {
    background: var(--dark);
    color: white;
    font-weight: 600;
}

.compare-table th:first-child {
    text-align: left;
}

.compare-table td:first-child {
    text-align: left;
    font-weight: 500;
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table tr:hover td {
    background: #f8fafc;
}

.check {
    color: var(--success);
    font-weight: bold;
    font-size: 1.2rem;
}

.cross {
    color: #ef4444;
    font-weight: bold;
}

.partial {
    color: var(--gray);
    font-size: 0.875rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: white;
}

.cta-content p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

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

.cta-section .btn-secondary {
    background: transparent;
    border-color: white;
    color: white;
}

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

/* Footer */
footer {
    background: var(--dark);
    color: white;
    padding: 60px 0 30px;
    text-align: center;
}

.footer-content {
    margin-bottom: 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-tagline {
    color: var(--gray-light);
    margin-bottom: 8px;
}

.footer-license a {
    color: var(--secondary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-links a {
    color: var(--gray-light);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-copy {
    color: var(--gray);
    font-size: 0.875rem;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive */
@media (max-width: 1024px) {
    header .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .badges {
        justify-content: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
    
    .ai-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    header {
        padding: 120px 0 80px;
        min-height: auto;
    }
    
    header h1 {
        font-size: 2.5rem;
    }
    
    .hero-icon {
        font-size: 3rem;
    }
    
    .tagline {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .btn-large {
        padding: 16px 24px;
        font-size: 1rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
}