/* =====================================================
   Sirius Landing Page - EXACT Original Styles
   ===================================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #fafafa;
    color: #111827;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
.header {
    padding: 1.5rem 0;
    border-bottom: 1px solid #e5e7eb;
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: #111827;
}

.logo-symbol {
    width: 32px;
    height: 32px;
    background: #3b82f6;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    font-weight: 600;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

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

.nav-link {
    color: #6b7280;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: #111827;
}

.header-cta {
    background: #3b82f6;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.header-cta:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.header-cta-secondary {
    background: #f3f4f6 !important;
    color: #6b7280 !important;
    border: 1px solid #d1d5db !important;
}

.header-cta-secondary:hover {
    background: #e5e7eb !important;
    color: #374151 !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    background: linear-gradient(135deg, #fafafa 0%, #f3f4f6 100%);
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 60vh;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
    color: #111827;
}

.hero-content .highlight {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.375rem;
    color: #4b5563;
    margin-bottom: 2.5rem;
    line-height: 1.6;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding: 1.25rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    color: #6b7280;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s ease;
    font-size: 1.1rem;
}

.btn-secondary:hover {
    color: #111827;
}

.hero-demo {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.interactive-demo {
    width: 100%;
    max-width: 480px;
    height: 500px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.15);
    border: 1px solid #e5e7eb;
    overflow: hidden;
    position: relative;
}

.demo-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #f9fafb;
}

.demo-title {
    font-weight: 600;
    color: #374151;
    font-size: 0.9rem;
}

.demo-controls {
    display: flex;
    gap: 0.5rem;
}

.demo-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #d1d5db;
}

.demo-dot:first-child {
    background: #ef4444;
}

.demo-dot:nth-child(2) {
    background: #f59e0b;
}

.demo-dot:nth-child(3) {
    background: #10b981;
}

.demo-content {
    flex: 1;
    padding: 1.5rem;
    background: #fafafa;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: calc(100% - 80px);
    overflow-y: auto;
}

.chat-message {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.5;
    animation: fadeInUp 0.5s ease-out;
}

.chat-message.user {
    background: #3b82f6;
    color: white;
    margin-left: 2rem;
    margin-bottom: 0.5rem;
}

.chat-message.ai {
    background: #ffffff;
    color: #374151;
    margin-right: 2rem;
    border: 1px solid #e5e7eb;
    margin-bottom: 1rem;
}

.typing-indicator {
    background: #ffffff;
    color: #9ca3af;
    margin-right: 2rem;
    border: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: #9ca3af;
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.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: 0.4;
    }

    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Features Section */
.features {
    padding: 8rem 0;
    background: #ffffff;
}

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

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: #111827;
    letter-spacing: -0.025em;
}

.section-header p {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.features-layout {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.feature-main {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 2px solid #e2e8f0;
    border-radius: 24px;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.feature-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6 0%, #1d4ed8 100%);
}

.feature-main h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #111827;
}

.feature-main p {
    color: #4b5563;
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.feature-highlight {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #3b82f6;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.feature-sub {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-sub:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

.feature-sub h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #111827;
}

.feature-sub p {
    color: #6b7280;
    line-height: 1.6;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    display: block;
}

/* How it Works */
.how-it-works {
    padding: 8rem 0;
    background: #f8fafb;
}

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

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.step-item {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin: 0 auto 1.5rem;
}

.step-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #111827;
}

.step-item p {
    color: #6b7280;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, #111827 0%, #1f2937 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    position: relative;
    z-index: 10;
}

.cta h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.cta p {
    font-size: 1.25rem;
    color: #d1d5db;
    margin-bottom: 3rem;
    line-height: 1.6;
}

.cta .btn-primary {
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
    color: #111827;
    font-size: 1.125rem;
    padding: 1.25rem 2.5rem;
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
}

.cta .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 255, 255, 0.3);
}

/* Footer */
.footer {
    padding: 3rem 0;
    border-top: 1px solid #e5e7eb;
    background: #fafafa;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    color: #6b7280;
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #6b7280;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: #111827;
}

/* Responsive */
@media (max-width: 1024px) {
    .features-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }

    .nav {
        display: none;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 0 1rem;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .cta h2 {
        font-size: 2rem;
    }
}