/* Variables - Exact Algsoch App Colors */
:root {
    --background-dark: #0B0F14;
    --surface-secondary: #121821;
    --accent-blue: #3B82F6;
    --accent-cyan: #06B6D4;
    --accent-violet: #8B5CF6;
    --accent-pink: #EC4899;
    --accent-green: #10B981;
    --accent-orange: #F97316;
    --text-primary: #FFFFFF;
    --text-muted: #94A3B8;
    --text-secondary: #B0B8C1;
    --transition: all 0.3s ease;
    
    /* Additional Variables for Clarity */
    --primary-color: #3B82F6;
    --dark-bg: #0B0F14;
    --light-bg: #F8FAFC;
    --text-light: #64748B;
    --text-dark: #1E293B;
}

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

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: var(--background-dark);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0;
}

.logo p {
    font-size: 0.8rem;
    opacity: 0.8;
    margin: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-links a:hover {
    background: rgba(74, 144, 226, 0.2);
}

/* Hero Section */
.hero {
    background: var(--background-dark);
    color: white;
    padding: 80px 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

/* Buttons */
.btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(74, 144, 226, 0.3);
}

.btn-secondary {
    background: white;
    color: #3B82F6;
    border-color: white;
    border: 2px solid #3B82F6;
    font-weight: 700;
}

.btn-secondary:hover {
    background: #3B82F6;
    color: white;
    box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* Phone Mockup */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    background: white;
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    width: 300px;
    aspect-ratio: 9/16;
    border: 8px solid #333;
    position: relative;
    overflow: hidden;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 25px;
    background: #333;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.screen {
    background: var(--background-dark);
    height: 100%;
    border-radius: 30px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Animated Screen Carousel */
.animated-screen {
    position: relative;
    width: 100%;
    height: 100%;
}

.screen-content {
    position: absolute;
    width: 100%;
    height: 100%;
    display: none;
    opacity: 0;
    animation: screenFade 12s infinite;
}

.screen-1 {
    display: flex;
    animation-delay: 0s;
}

.screen-2 {
    display: flex;
    animation-delay: 4s;
}

.screen-3 {
    display: flex;
    animation-delay: 8s;
}

@keyframes screenFade {
    0% {
        opacity: 0;
    }
    5% {
        opacity: 1;
    }
    28% {
        opacity: 1;
    }
    33% {
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--light-bg);
}

.features h2,
.modes h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-bg);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    border: 1px solid #E2E8F0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #0B0F14;
    font-weight: 700;
}

.feature-card p {
    color: #475569;
    line-height: 1.8;
    font-size: 0.95rem;
}

/* Speed Section */
.speed-section {
    padding: 90px 0;
    background:
        radial-gradient(circle at top right, rgba(6, 182, 212, 0.10), transparent 28%),
        radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.12), transparent 32%),
        linear-gradient(180deg, #F8FAFC 0%, #EEF4FF 100%);
}

.speed-section .section-header h2 {
    color: #0B0F14;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.55);
}

.speed-section .section-header p {
    color: #334155;
    font-weight: 500;
}

.speed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.speed-card {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(59, 130, 246, 0.10);
    border-radius: 18px;
    padding: 1.75rem;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
    transition: var(--transition);
}

.speed-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.10);
}

.speed-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.14), rgba(6, 182, 212, 0.16));
}

.speed-card h3 {
    color: #0B0F14;
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.speed-card p {
    color: #475569;
    line-height: 1.75;
    font-size: 0.96rem;
}

.speed-note {
    background: #0F172A;
    color: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}

.speed-note h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
    color: white;
}

.speed-list {
    list-style: none;
    display: grid;
    gap: 0.9rem;
}

.speed-list li {
    position: relative;
    padding-left: 1.7rem;
    color: #DBEAFE;
    line-height: 1.7;
}

.speed-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-cyan);
    font-size: 1.2rem;
    line-height: 1.4;
}

/* Modes Section */
.modes {
    padding: 80px 0;
    background: white;
}

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

.mode-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.mode-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

.mode-header {
    padding: 1.5rem;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.mode-header h3 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 700;
}

.mode-content {
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
    max-height: 600px;
}

.mode-header.direct {
    background: #8B5CF6;
}

.mode-header.answer {
    background: #3B82F6;
}

.mode-header.explain {
    background: #06B6D4;
}

.mode-header.notes {
    background: #10b981;
}

.mode-header.direction {
    background: #f97316;
}

.mode-header.creative {
    background: #ec4899;
}

.mode-header.theory {
    background: #3B82F6;
}

.mode-badge {
    background: rgba(255,255,255,0.3);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.mode-content {
    padding: 1.5rem;
}

.mode-description {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: #1E293B;
}

.mode-details {
    background: #F8FAFC;
    padding: 1rem;
    border-radius: 8px;
}

.mode-details h4 {
    color: #3B82F6;
    margin: 1rem 0 0.5rem 0;
    font-size: 0.95rem;
    font-weight: 700;
}

.mode-details ul {
    list-style: none;
    padding-left: 1rem;
}

.mode-details li {
    margin: 0.5rem 0;
    color: #475569;
    position: relative;
    padding-left: 1.5rem;
    font-weight: 500;
}

.mode-details li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.mode-details p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0.5rem 0;
}

/* Technical Features */
.technical-features {
    background: var(--background-dark);
    color: white;
    padding: 80px 0;
}

.technical-features h2 {
    text-align: center;
    color: white;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tech-item {
    background: rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.tech-item h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: white;
    font-weight: 700;
}

.tech-item p {
    line-height: 2;
    color: #E2E8F0;
    font-weight: 500;
}

.tech-item strong {
    color: #60A5FA;
}

/* Download Section */
.download {
    padding: 80px 0;
    background: var(--light-bg);
}

.download h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-bg);
}

.download-card {
    background: white;
    border-radius: 12px;
    padding: 3rem;
    margin: 2rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.download-info h3 {
    font-size: 2rem;
    color: #0B0F14;
    margin-bottom: 1rem;
    font-weight: 700;
}

.download-info p {
    margin: 0.5rem 0;
    color: #475569;
    font-size: 1.1rem;
    font-weight: 500;
}

.download-info strong {
    color: #3B82F6;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    flex-direction: column;
}

.installation-guide {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.installation-guide h3 {
    color: var(--dark-bg);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    text-align: center;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.spec-item {
    padding: 1.5rem;
    background: #F8FAFC;
    border-radius: 8px;
    border-left: 4px solid #3B82F6;
}

.spec-item h4 {
    color: #0B0F14;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.spec-item p {
    color: #475569;
    font-size: 0.95rem;
    line-height: 1.6;
    font-weight: 500;
}

/* System Prompt Section */
.system-prompt {
    background: #0F172A;
    border-left: 4px solid #3B82F6;
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    max-width: 100%;
}

.system-prompt h5 {
    margin: 0 0 0.75rem 0;
    font-size: 0.9rem;
    color: #60A5FA;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.system-prompt pre {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.5;
    color: #E2E8F0;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
    word-break: break-word;
}


.model-download-warning {
    background: #f97316;
    padding: 2.5rem;
    border-radius: 12px;
    margin-top: 2.5rem;
    box-shadow: 0 10px 30px rgba(255, 165, 0, 0.3);
    border: 3px solid rgba(255,255,255,0.3);
    color: white;
}

.model-download-warning h3 {
    font-size: 1.6rem;
    margin: 0 0 1rem 0;
    color: white;
}

.model-download-warning > p {
    font-size: 1.05rem;
    margin: 0 0 1.5rem 0;
    line-height: 1.8;
}

.warning-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.warning-item {
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid rgba(255,255,255,0.5);
}

.warning-item h4 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem 0;
    color: white;
}

.warning-item p {
    margin: 0;
    opacity: 0.95;
    font-size: 0.95rem;
    line-height: 1.6;
}


.first-time-banner {
    background: #ef4444;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 2rem;
    box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
    border: 2px solid rgba(255,255,255,0.2);
}

.first-time-banner h3 {
    font-size: 1.5rem;
    margin: 0 0 0.5rem 0;
    color: white;
}

.first-time-banner p {
    margin: 0;
    color: white;
    font-size: 1.05rem;
    font-weight: 500;
}

.first-time-banner strong {
    color: #fff;
    font-weight: 700;
}


.installation-steps {
    background: var(--background-dark);
    color: white;
    padding: 80px 0;
}

.installation-steps h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.step-number {
    min-width: 60px;
    width: 60px;
    height: 60px;
    background: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    color: white;
    font-weight: 700;
}

.step-content p {
    margin: 0;
    color: #E2E8F0;
    font-weight: 500;
}
    font-size: 0.95rem;
    line-height: 1.6;
}

.install-notes {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.install-notes p {
    margin: 0;
    opacity: 0.9;
    font-size: 0.95rem;
}


.faq {
    padding: 80px 0;
    background: white;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #0B0F14;
    font-weight: 700;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: #F8FAFC;
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #3B82F6;
}

.faq-item h4 {
    color: #0B0F14;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.faq-item p {
    color: #475569;
    line-height: 1.8;
    font-weight: 500;
}

/* Contact Section */
.contact-section {
    background: var(--surface-secondary);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.contact-info p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

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

/* About Me Section */
.about-me {
    background: var(--surface-secondary);
    color: white;
    padding: 80px 0;
}

.about-me h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

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

.avatar {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 4px solid var(--primary-color);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    object-fit: cover;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: white;
}

.about-subtitle {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1rem;
    line-height: 1.8;
    opacity: 0.95;
    font-size: 1.05rem;
}

.about-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #0B0F14 0%, #121821 100%);
    color: white;
    padding: 2rem 0;
    border-top: 2px solid rgba(59, 130, 246, 0.3);
    margin-top: 4rem;
}

.footer-box {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    display: grid;
    grid-template-columns: auto 1px auto 1px auto;
    gap: 2rem;
    align-items: center;
}

.footer-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #3B82F6;
    margin: 0;
}

.footer-item p {
    margin: 0;
    color: #CBD5E1;
    font-size: 0.9rem;
}

.footer-divider {
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
}

.footer-links-inline {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-links-inline a {
    color: #94A3B8;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.footer-links-inline a:hover {
    color: #3B82F6;
}

.footer-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.15);
    color: #60A5FA;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.footer-bottom-simple {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom-simple p {
    margin: 0;
    color: #94A3B8;
    font-size: 0.9rem;
}

.footer-bottom-simple a {
    color: #3B82F6;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.footer-bottom-simple a:hover {
    color: #60A5FA;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
        color: white;
        text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    }

    .hero p {
        color: #e2e8f0;
        font-size: 1rem;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-image {
        display: none;
    }

    .nav-links {
        gap: 0.5rem;
        font-size: 0.9rem;
        flex-wrap: wrap;
    }

    .nav-links a {
        padding: 0.5rem 0.8rem;
        color: white;
        font-weight: 500;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-links {
        justify-content: center;
        flex-direction: column;
    }
    
    .avatar {
        width: 250px;
        height: 250px;
    }

    .features-grid,
    .tech-grid,
    .faq-grid,
    .specs-grid,
    .steps-container,
    .warning-details {
        grid-template-columns: 1fr;
    }

    /* Tablet: 2 columns for modes */
    .modes-container {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Footer Tablet */
    .footer-box {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .footer-divider {
        display: none;
    }

    .feature-card h3,
    .mode-card h3,
    .tech-item h4 {
        color: var(--background-dark);
        font-size: 1.1rem;
    }

    .feature-card p,
    .mode-card p,
    .tech-item p {
        color: var(--text-dark);
        line-height: 1.6;
    }

    .download-card {
        grid-template-columns: 1fr;
    }

    .download-buttons {
        flex-direction: column;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .features h2,
    .modes h2 {
        font-size: 2rem;
        color: var(--dark-bg);
    }

    .section-subtitle {
        color: var(--text-light);
        font-size: 1rem;
    }

    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }

    .contact-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    h2, h3, h4, h5 {
        color: var(--dark-bg);
    }

    p, li, span {
        color: var(--text-dark);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 16px;
        line-height: 1.6;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .navbar {
        padding: 1rem 0.75rem;
    }

    .navbar .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 0.5rem;
    }

    .navbar .logo h1 {
        font-size: 1.5rem;
        color: white;
        text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        margin: 0;
    }
    
    .navbar .logo p {
        font-size: 0.7rem;
        color: #e2e8f0;
    }

    .nav-links {
        width: auto;
        justify-content: flex-end;
        flex-wrap: wrap;
        gap: 0.25rem;
        font-size: 0.9rem;
    }
    
    .nav-links a {
        padding: 0.4rem 0.6rem;
        font-size: 0.9rem;
        color: white;
        font-weight: 500;
    }

    .nav-links a:hover {
        background-color: rgba(255,255,255,0.1);
    }

    .hero h1 {
        font-size: 1.75rem;
        color: white;
        text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        line-height: 1.3;
    }

    .hero p {
        font-size: 0.95rem;
        color: #e2e8f0;
        line-height: 1.6;
    }

    .section-subtitle {
        font-size: 0.95rem;
        color: var(--text-light);
    }

    h2 {
        font-size: 1.75rem;
        color: var(--dark-bg);
    }

    h3 {
        font-size: 1.3rem;
        color: var(--dark-bg);
    }

    h4 {
        font-size: 1.1rem;
        color: var(--dark-bg);
    }

    p, li, span {
        font-size: 0.95rem;
        color: var(--text-dark);
        line-height: 1.6;
    }

    .feature-card,
    .mode-card,
    .tech-item {
        padding: 1rem;
    }

    /* Mobile: 1 column for modes */
    .modes-container {
        grid-template-columns: 1fr;
    }

    .mode-card {
        max-height: none;
    }

    .mode-content {
        max-height: 500px;
        padding: 1rem;
    }

    .mode-header {
        padding: 1rem;
    }

    .mode-badge {
        font-size: 0.7rem;
        padding: 3px 8px;
    }

    .feature-card h3,
    .mode-card h3 {
        font-size: 1.2rem;
        color: var(--background-dark);
        margin-bottom: 0.5rem;
    }

    .feature-card p,
    .mode-card p {
        font-size: 0.95rem;
        color: var(--text-dark);
        line-height: 1.6;
    }

    .btn {
        font-size: 0.95rem;
        padding: 0.75rem 1.25rem;
        color: white;
        font-weight: 600;
    }

    .hero-buttons,
    .download-buttons,
    .contact-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero-buttons .btn,
    .download-buttons .btn,
    .contact-buttons .btn {
        width: 100%;
    }
    
    .about-links .btn {
        width: 100%;
    }

    .system-prompt {
        background-color: #0f172a;
        border-left: 3px solid #3B82F6;
        padding: 0.75rem;
        margin: 0.75rem 0;
        font-size: 0.8rem;
        font-family: 'Courier New', monospace;
        color: #e2e8f0;
        overflow-x: auto;
        line-height: 1.4;
        word-break: break-word;
    }

    .system-prompt pre {
        font-size: 0.8rem;
        line-height: 1.4;
    }

    .system-prompt strong {
        color: #60a5fa;
    }

    .mode-content {
        max-height: 600px;
        overflow-y: auto;
    }

    .mode-details {
        background: #F8FAFC;
        padding: 0.75rem;
        border-radius: 6px;
        margin: 0.5rem 0;
    }

    .mode-details h4 {
        font-size: 0.95rem;
        margin: 0.5rem 0 0.25rem 0;
    }

    .mode-details li {
        font-size: 0.9rem;
        margin: 0.25rem 0;
    }

    .spec-item {
        color: var(--text-dark);
        font-size: 0.95rem;
    }

    .spec-item strong {
        color: var(--background-dark);
    }

    footer p, footer a {
        font-size: 0.9rem;
        color: #94A3B8;
    }

    footer a {
        color: #3B82F6;
        text-decoration: underline;
    }
}
    
    .avatar {
        width: 200px;
        height: 200px;
    }
    
    .about-text h3 {
        font-size: 1.5rem;
    }
    
    .spec-item {
        padding: 1rem;
        font-size: 0.9rem;
    }
    
    .spec-item h4 {
        font-size: 1rem;
    }
    
    .installation-guide {
        padding: 1rem;
        margin-top: 1rem;
    }
    
    .installation-guide h3 {
        font-size: 1.1rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .step-content h4 {
        font-size: 1rem;
    }
    
    .step-content p {
        font-size: 0.9rem;
    }
    
    .installation-steps h2 {
        font-size: 1.8rem;
    }
    
    .install-notes p {
        font-size: 0.85rem;
    }
    
    .model-download-warning {
        padding: 1.5rem;
        margin-top: 2rem;
    }
    
    .model-download-warning h3 {
        font-size: 1.3rem;
    }
    
    .warning-details {
        grid-template-columns: 1fr;
    }
    
    .first-time-banner {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .first-time-banner h3 {
        font-size: 1.2rem;
        margin-bottom: 0.3rem;
    }
    
    .first-time-banner p {
        font-size: 0.95rem;
    }

    /* Footer Mobile Responsive */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 2rem;
    }

    .footer-column h4 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }

    .footer-column p {
        font-size: 0.9rem;
    }

    .footer-bottom {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }

    .footer-bottom-left,
    .footer-bottom-right {
        text-align: center;
    }

    .footer-bottom p {
        font-size: 0.85rem;
    }

    .badge {
        display: inline-block;
        margin: 0.2rem 0.15rem;
    }

    /* Mobile Footer Box */
    .footer-box {
        grid-template-columns: 1fr;
        padding: 1.5rem;
        gap: 1rem;
    }

    .footer-item {
        gap: 0.25rem;
    }

    .footer-item h4 {
        font-size: 0.95rem;
    }

    .footer-item p {
        font-size: 0.85rem;
    }

    .footer-links-inline {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .footer-links-inline a {
        font-size: 0.85rem;
    }
}

/* ===== NEW MODERN SECTIONS CSS ===== */

/* Tech Stack Section */
.tech-stack-section {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(15,23,42,0.8) 0%, rgba(15,23,42,0.9) 100%);
    border-radius: 20px;
    margin: 4rem 0;
    color: #E2E8F0;
    border: 1px solid rgba(59,130,246,0.2);
}

.installation-section,
.why-algsoch-section,
.faq-section {
    color: #E2E8F0;
    padding: 4rem 2rem;
    margin: 4rem 0;
    background: linear-gradient(135deg, rgba(15,23,42,0.7) 0%, rgba(15,23,42,0.8) 100%);
    border-radius: 20px;
    border: 1px solid rgba(59,130,246,0.15);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #FFFFFF;
    font-weight: 700;
}

.section-header p {
    font-size: 1.1rem;
    color: #A0AEC0;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tech-card {
    background: rgba(30,41,59,0.8);
    border: 1px solid rgba(59,130,246,0.3);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.tech-card:hover {
    border-color: rgba(59,130,246,0.8);
    background: rgba(30,41,59,0.95);
    transform: translateY(-4px);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tech-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: #06B6D4;
    font-weight: 700;
}

.tech-card p,
.tech-specs,
.installation-section p,
.why-algsoch-section p,
.faq-section p {
    color: #F1F5F9;
    line-height: 1.6;
}

.tech-specs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.spec-label {
    font-size: 0.9rem;
    color: #6d4ad7;
    font-weight: 600;
}

.spec-value {
    font-weight: 700;
    color: #1f0495;
    background: rgba(59,130,246,0.25);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
}

.spec-divider {
    height: 1px;
    background: rgba(59,130,246,0.1);
}

/* Download Hero */
.download-hero {
    margin: 4rem 0;
    padding: 3rem;
    background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(18,24,33,0.95) 100%);
    border-radius: 20px;
    border: 1px solid rgba(59,130,246,0.4);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.download-text h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: #FFFFFF;
    font-weight: 700;
}

.download-text p {
    font-size: 1.1rem;
    color: #E2E8F0;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.download-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.btn-primary, .btn-secondary {
    display: inline-block;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #3B82F6 0%, #06B6D4 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(59,130,246,0.3);
}

.btn-secondary {
    background: rgba(59,130,246,0.1);
    color: #3B82F6;
    border: 1px solid rgba(59,130,246,0.3);
}

.btn-secondary:hover {
    background: rgba(59,130,246,0.2);
    border-color: rgba(59,130,246,0.6);
}

.app-specs-card {
    background: rgba(30,41,59,0.75);
    border: 1px solid rgba(59,130,246,0.3);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.spec-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.spec-title {
    font-size: 0.9rem;
    color: #A0AEC0;
    margin: 0;
    font-weight: 600;
}

.spec-data {
    font-size: 1.2rem;
    font-weight: 700;
    color: #FFFFFF;
    margin: 0;
}

/* Installation Timeline */
.installation-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
    padding: 2rem 0;
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    position: relative;
}

.timeline-marker {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3B82F6 0%, #06B6D4 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.8rem;
    color: white;
    flex-shrink: 0;
}

.highlight-step .timeline-marker {
    background: linear-gradient(135deg, #EF4444 0%, #F97316 100%);
}

.timeline-content {
    background: rgba(30,41,59,0.8);
    border: 1px solid rgba(59,130,246,0.2);
    border-radius: 12px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.timeline-content h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #FFFFFF;
    font-weight: 600;
}

.timeline-content p {
    color: #F1F5F9;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.timeline-highlight {
    background: rgba(59,130,246,0.15);
    border-left: 3px solid #3B82F6;
    padding: 0.8rem;
    padding-left: 1rem;
    font-size: 0.95rem;
    color: #E2E8F0;
    border-radius: 4px;
    font-weight: 500;
}

.highlight-step .timeline-highlight {
    background: rgba(239,68,68,0.15);
    border-left-color: #EF4444;
    color: #FECACA;
    font-weight: 600;
}

/* Why Features Grid */
.why-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.why-card {
    background: rgba(30,41,59,0.75);
    border: 1px solid rgba(59,130,246,0.3);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.why-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3B82F6, #06B6D4);
}

.why-card:hover {
    transform: translateY(-8px);
    border-color: rgba(59,130,246,0.8);
    background: rgba(30,41,59,0.9);
}

.why-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

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

.why-card h3 {
    font-size: 1.3rem;
    margin: 0;
    color: #FFFFFF;
    font-weight: 600;
}

.why-card p {
    color: #F1F5F9;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.why-benefits {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.why-benefits li {
    color: #F1F5F9;
    padding-left: 1.5rem;
    position: relative;
}

.why-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #06B6D4;
    font-weight: bold;
}

/* FAQ Styling */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 3rem;
}

.faq-item {
    background: rgba(30,41,59,0.75);
    border: 1px solid rgba(59,130,246,0.2);
    border-radius: 12px;
    overflow: visible;
    transition: all 0.3s ease;
    margin-bottom: 0.5rem;
}

.faq-item[open] {
    background: rgba(30,41,59,0.9);
    border-color: rgba(59,130,246,0.5);
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px rgba(59,130,246,0.1);
}

.faq-item summary {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq-question {
    font-weight: 600;
    font-size: 1.05rem;
    color: #FFFFFF;
}

.faq-toggle {
    color: #3B82F6;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item[open] .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: #F1F5F9;
    line-height: 1.7;
    border-top: 1px solid rgba(59,130,246,0.1);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-answer p {
    margin: 0;
    color: #F1F5F9;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .download-content {
        grid-template-columns: 1fr;
    }

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

/* Responsive - Mobile */
@media (max-width: 768px) {
    .tech-stack-section {
        padding: 2rem 1.5rem;
        margin: 2rem 0;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .tech-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .tech-card {
        padding: 1.5rem;
    }

    .tech-card h3 {
        font-size: 1.1rem;
    }

    .download-hero {
        margin: 2rem 0;
        padding: 2rem;
    }

    .download-text h2 {
        font-size: 1.6rem;
    }

    .download-text p {
        font-size: 1rem;
    }

    .download-cta {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    .app-specs-card {
        padding: 1.5rem;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .timeline-marker {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }

    .timeline-content {
        padding: 1.2rem;
    }

    .timeline-content h4 {
        font-size: 1.1rem;
    }

    .timeline-content p {
        font-size: 0.95rem;
    }

    .timeline-highlight {
        font-size: 0.9rem;
        padding: 0.6rem 0.8rem;
    }

    .why-features-grid {
        grid-template-columns: 1fr;
    }

    .why-card {
        padding: 1.8rem;
    }

    .why-card h3 {
        font-size: 1.2rem;
    }

    .why-benefits li {
        font-size: 0.95rem;
    }

    .faq-item summary {
        padding: 1.2rem;
    }

    .faq-question {
        font-size: 1rem;
    }

    .faq-container {
        gap: 1rem;
    }

    .faq-item {
        margin-bottom: 0.3rem;
    }

    .faq-item[open] {
        margin-bottom: 1rem;
        box-shadow: 0 4px 12px rgba(59,130,246,0.1);
    }

    .faq-toggle {
        font-size: 1.3rem;
    }

    .faq-answer {
        padding: 0 1.2rem 1.2rem 1.2rem;
        font-size: 0.95rem;
    }

    .badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }

    .footer-bottom-simple {
        padding-top: 1rem;
    }

    .footer-bottom-simple p {
        font-size: 0.8rem;
    }

    .tech-card p {
        color: #F1F5F9;
    }

    .spec-label {
        color: #147eff;
    }

    .why-card p {
        color: #F1F5F9;
    }
}