/* Signal Room inspired design system */
:root {
    --bg: #121a1f;
    --panel: #1a252c;
    --line: #2a3b44;
    --text: #e8eef2;
    --muted: #8fa5b1;
    --cyan: #50a8bd;
    --sand: #d6ae7d;
    --rose: #cf7d7d;
    --mint: #70b894;
}

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

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: 'IBM Plex Serif', Georgia, serif;
    color: var(--text);
    margin-bottom: 1rem;
}

a {
    color: var(--cyan);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header & Navigation */
header {
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    padding: 1rem 0;
}

nav {
    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;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cyan);
}

.logo-img {
    height: 48px;
    width: 48px;
}

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

nav a {
    color: var(--text);
    transition: color 0.2s;
}

nav a:hover {
    color: var(--cyan);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--sand);
}

.tagline {
    font-size: 1.25rem;
    color: var(--muted);
    max-width: 700px;
    margin: 0 auto 2rem;
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

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

.btn-primary:hover {
    background: var(--mint);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background: var(--panel);
    text-decoration: none;
}

/* Feature Grid */
.features {
    padding: 4rem 0;
}

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

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

.feature-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 2rem;
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--cyan);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    border-radius: 12px;
    background: var(--panel);
    border: 2px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* Icon styles - minimalist line-art */
.icon-voice::before {
    content: '';
    width: 24px;
    height: 32px;
    border: 2px solid var(--cyan);
    border-radius: 12px 12px 0 0;
    position: relative;
}

.icon-voice::after {
    content: '';
    position: absolute;
    bottom: 16px;
    width: 32px;
    height: 2px;
    background: var(--cyan);
}

.icon-brain::before {
    content: '';
    width: 36px;
    height: 36px;
    border: 2px solid var(--mint);
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
}

.icon-chart::before {
    content: '';
    width: 32px;
    height: 32px;
    background: linear-gradient(to top, var(--cyan) 0%, var(--cyan) 30%, transparent 30%, transparent 50%, var(--cyan) 50%, var(--cyan) 65%, transparent 65%, transparent 80%, var(--cyan) 80%);
    background-repeat: repeat-x;
    background-size: 8px 32px;
}

.icon-target::before {
    content: '';
    width: 32px;
    height: 32px;
    border: 2px solid var(--sand);
    border-radius: 50%;
    box-shadow: inset 0 0 0 6px var(--panel), inset 0 0 0 8px var(--sand);
}

.icon-lock::before {
    content: '';
    width: 24px;
    height: 16px;
    border: 2px solid var(--rose);
    border-radius: 4px;
    position: relative;
    top: 4px;
}

.icon-lock::after {
    content: '';
    position: absolute;
    top: 16px;
    width: 12px;
    height: 14px;
    border: 2px solid var(--rose);
    border-bottom: none;
    border-radius: 12px 12px 0 0;
}

.icon-clock::before {
    content: '';
    width: 32px;
    height: 32px;
    border: 2px solid var(--cyan);
    border-radius: 50%;
}

.icon-clock::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 12px;
    background: var(--cyan);
    top: 18px;
    left: 50%;
    transform: translateX(-1px);
}

.feature-card h3 {
    color: var(--cyan);
    margin-bottom: 0.5rem;
}

/* CTA Section */
.cta {
    text-align: center;
    padding: 4rem 0;
    background: var(--panel);
    border-radius: 12px;
    margin-top: 4rem;
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Legal Content */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--sand);
}

.legal-content h2 {
    font-size: 1.75rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--cyan);
}

.legal-content h3 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--mint);
}

.legal-content section {
    margin-bottom: 2rem;
}

.legal-content ul, .legal-content ol {
    margin-left: 2rem;
    margin-top: 0.5rem;
}

.legal-content li {
    margin-bottom: 0.5rem;
}

/* Support Content */
.support-content {
    max-width: 900px;
    margin: 0 auto;
}

.voice-support-highlight {
    background: linear-gradient(135deg, var(--panel) 0%, #1f2f38 100%);
    border: 2px solid var(--cyan);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 3rem;
}

.voice-support-highlight h2 {
    color: var(--cyan);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.voice-instructions {
    background: var(--bg);
    border-left: 4px solid var(--mint);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 4px;
    font-size: 0.95rem;
}

/* FAQ */
.faq {
    margin-top: 3rem;
}

.faq h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--sand);
}

.faq-item {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.faq-item h3 {
    color: var(--cyan);
    margin-bottom: 0.75rem;
}

/* Contact Grid */
.contact {
    margin-top: 3rem;
}

.contact h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--sand);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-box {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 1.5rem;
}

.contact-box h3 {
    color: var(--mint);
    margin-bottom: 0.75rem;
}

.response-time {
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
}

/* Footer */
footer {
    background: var(--panel);
    border-top: 1px solid var(--line);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

footer p {
    color: var(--muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    main {
        padding: 2rem 1rem;
    }
}