/**
 * MIDNIGHT BLUE - Current Default
 * Dark navy/black theme with blue accent
 * Professional, tech-forward, serious
 */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f16;
    --bg-tertiary: #14141e;
    --bg-card: #1a1a26;
    --text-primary: #e8e6e3;
    --text-secondary: #9a9a9a;
    --text-muted: #6a6a6a;
    --accent: #4a9eff;
    --accent-dim: #2a5a9f;
    --accent-glow: rgba(74, 158, 255, 0.15);
    --border: #2a2a38;
    --border-light: #3a3a48;
    --success: #4ade80;
    --warning: #f59e0b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-wide {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.3;
    font-weight: 600;
}

h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.section-intro {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
}

.emphasis {
    color: var(--accent);
    font-weight: 600;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--accent);
}

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

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.nav-cta {
    background: var(--accent);
    color: var(--bg-primary) !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
}

.nav-cta:hover {
    background: #5aafff;
}

/* Hero */
.hero {
    padding: 10rem 0 6rem;
    text-align: center;
}

.hero-label {
    display: inline-block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 1.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--accent-dim);
    border-radius: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero h1 span {
    color: var(--accent);
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 750px;
    margin: 0 auto 2.5rem;
}

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

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: #5aafff;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

/* Section styling */
section {
    padding: 5rem 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-darker {
    background: var(--bg-tertiary);
}

/* Insight / Problem Section */
.insight {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

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

.insight h2 {
    margin-bottom: 1.5rem;
}

.insight-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.ai-loop {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
}

.ai-loop h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.loop-step {
    display: flex;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.loop-step:last-child {
    border-bottom: none;
}

.loop-step .num {
    width: 24px;
    height: 24px;
    background: var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    margin-right: 1rem;
    color: var(--text-muted);
}

.loop-arrow {
    text-align: center;
    padding: 0.5rem 0;
    color: var(--text-muted);
}

.failures {
    margin-top: 2rem;
}

.failures h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--warning);
    margin-bottom: 1rem;
}

.failures ul {
    list-style: none;
}

.failures li {
    padding: 0.4rem 0;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.failures li::before {
    content: "×";
    position: absolute;
    left: 0;
    color: var(--warning);
    font-weight: bold;
}

/* Platform Section */
.platform {
    padding: 6rem 0;
}

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

.platform-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: border-color 0.3s;
}

.platform-card:hover {
    border-color: var(--accent-dim);
}

.platform-card .icon {
    width: 48px;
    height: 48px;
    background: var(--accent-glow);
    border: 1px solid var(--accent-dim);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

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

.platform-card .tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.platform-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.platform-card ul {
    list-style: none;
}

.platform-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
}

.platform-card li::before {
    content: "→";
    color: var(--accent);
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.platform-questions {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.platform-questions h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.platform-questions li {
    font-style: italic;
    color: var(--text-muted);
}

.platform-questions li::before {
    content: '"';
    color: var(--accent-dim);
}

/* Code First Section */
.code-first {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.code-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.code-column h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
}

.code-column.primary h4 {
    color: var(--accent);
    border-color: var(--accent-dim);
}

.code-column.secondary h4 {
    color: var(--text-muted);
}

.code-column ul {
    list-style: none;
}

.code-column li {
    padding: 0.6rem 0;
    color: var(--text-secondary);
}

.principles {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.principles h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 1rem;
}

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

.principles li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.principles li::before {
    content: "✓";
    color: var(--success);
    margin-right: 0.75rem;
    font-weight: bold;
}

/* Why This Matters */
.why-matters {
    padding: 5rem 0;
    text-align: center;
}

.why-matters h2 {
    margin-bottom: 1rem;
}

.why-matters .section-intro {
    margin: 0 auto 3rem;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    text-align: left;
}

.capability {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem;
}

.capability p {
    color: var(--text-secondary);
}

.not-chatbot {
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--accent-dim);
    border-radius: 12px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.not-chatbot p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.not-chatbot strong {
    color: var(--accent);
}

/* Progress Section */
.progress {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

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

.progress-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.progress-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
}

.progress-box h3 {
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

.progress-box h3::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    margin-right: 0.75rem;
}

.progress-box ul {
    list-style: none;
}

.progress-box li {
    padding: 0.6rem 0;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

.progress-box li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
}

.progress-box.roadmap h3::before {
    background: var(--accent);
}

.progress-box.roadmap li::before {
    content: "→";
    color: var(--accent);
}

.roadmap-item {
    margin-bottom: 1.5rem;
}

.roadmap-item h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.roadmap-item ul {
    margin-left: 1rem;
}

.roadmap-item li {
    font-size: 0.9rem;
}

.validation {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-style: italic;
    color: var(--text-muted);
}

/* Applications Section */
.applications {
    padding: 6rem 0;
}

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

.applications-header h2 {
    margin-bottom: 1rem;
}

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

.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: border-color 0.3s;
}

.app-card:hover {
    border-color: var(--accent-dim);
}

.app-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.app-card .fit {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--success);
    margin-bottom: 1rem;
}

.app-detail {
    margin-bottom: 1.25rem;
}

.app-detail h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.app-detail ul {
    list-style: none;
}

.app-detail li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 0.25rem 0;
}

.app-detail.advantage li::before {
    content: "→";
    color: var(--accent);
    margin-right: 0.5rem;
}

/* Who This Is For */
.audience {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

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

.audience h2 {
    margin-bottom: 1rem;
}

.audience-text .highlight {
    font-size: 1.25rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

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

.audience-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.audience-list li:last-child {
    border-bottom: none;
}

.audience-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.tagline-box {
    background: var(--bg-card);
    border: 1px solid var(--accent-dim);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
}

.tagline-box p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--text-secondary);
}

.tagline-box p strong {
    color: var(--accent);
    font-style: normal;
}

/* Vision Section */
.vision {
    padding: 6rem 0;
    text-align: center;
}

.vision-content {
    max-width: 800px;
    margin: 0 auto;
}

.vision h2 {
    margin-bottom: 2rem;
}

.vision blockquote {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 2rem;
    padding: 2rem;
    border-left: 4px solid var(--accent);
    background: var(--bg-card);
    border-radius: 0 12px 12px 0;
    text-align: left;
}

.vision-points {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 3rem;
    text-align: left;
}

.vision-points li {
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
}

.vision-points li::before {
    content: "✓";
    color: var(--accent);
    margin-right: 0.75rem;
}

.vision-summary {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.vision-summary .name {
    color: var(--accent);
    font-weight: 600;
}

/* Contact */
.contact {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

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

.contact-text h2 {
    margin-bottom: 1rem;
}

.contact-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-reasons {
    list-style: none;
}

.contact-reasons li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.contact-reasons li::before {
    content: "→";
    color: var(--accent);
    margin-right: 0.75rem;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    margin-bottom: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

.contact-form button {
    width: 100%;
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.contact-form button:hover {
    background: #5aafff;
}

.contact-form button:disabled {
    background: var(--accent-dim);
    cursor: not-allowed;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    display: none;
    text-align: center;
}

.form-status.success {
    display: block;
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid #ef4444;
    color: #ef4444;
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: background 0.2s;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: transform 0.3s, top 0.3s;
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* Hamburger animation when open */
.mobile-menu-btn.active .hamburger {
    background: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Responsive */
@media (max-width: 900px) {
    .insight-grid,
    .platform-grid,
    .code-grid,
    .progress-content,
    .app-grid,
    .audience-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

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

    .principles-grid,
    .vision-points {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    /* Mobile navigation */
    .mobile-menu-btn {
        display: flex;
    }

    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        align-items: stretch;
        padding: 5rem 2rem 2rem;
        gap: 0;
        border-left: 1px solid var(--border);
        transition: right 0.3s ease;
        z-index: 99;
    }

    nav.active {
        right: 0;
    }

    nav a {
        padding: 1rem 0;
        border-bottom: 1px solid var(--border);
        font-size: 1rem;
    }

    nav a:last-of-type {
        border-bottom: none;
    }

    nav .nav-cta {
        margin-top: 1rem;
        text-align: center;
    }

    nav .theme-toggle {
        margin-top: 1.5rem;
        justify-content: center;
    }

    /* Mobile overlay */
    .mobile-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s, visibility 0.3s;
        z-index: 98;
    }

    .mobile-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    .hero {
        padding: 7rem 0 4rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero h1 br {
        display: none;
    }

    h2 {
        font-size: 1.75rem;
    }

    section {
        padding: 3rem 0;
    }

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

    .hero-cta .btn {
        width: 100%;
        text-align: center;
    }

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .section-intro {
        font-size: 1rem;
    }

    /* Better touch targets */
    .btn {
        padding: 1rem 2rem;
        min-height: 48px;
    }

    .contact-form input,
    .contact-form textarea,
    .contact-form select {
        padding: 1rem;
        font-size: 16px; /* Prevents iOS zoom */
    }

    .contact-form button {
        min-height: 48px;
    }

    /* Cards stack nicely */
    .platform-card,
    .app-card,
    .progress-box {
        padding: 1.5rem;
    }

    /* Vision section */
    .vision blockquote {
        font-size: 1.25rem;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .hero-label {
        font-size: 0.7rem;
        padding: 0.3rem 0.75rem;
    }

    .platform-card .icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

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