:root {
    --color-bg: #0b1020;
    --color-bg-elevated: #111827;
    --color-surface: #111827;
    --color-surface-soft: #111827;
    --color-border: #1f2937;
    --color-text: #e5e7eb;
    --color-text-muted: #9ca3af;
    --color-accent: #4f46e5; /* indigo / purple */
    --color-accent-soft: #6366f1;
    --color-accent-green: #059669; /* forest-leaning green */
    --color-danger: #f97373;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #111827 0, #020617 50%, #020617 100%);
    color: var(--color-text);
}

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

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 1.5rem;
}

.site-header {
    border-bottom: 1px solid var(--color-border);
    background: rgba(11,16,32,0.95);
    backdrop-filter: blur(14px);
    position: sticky;
    top: 0;
    z-index: 40;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 0.9rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-green));
    position: relative;
    box-shadow: 0 0 0 1px rgba(15,23,42,0.6), 0 10px 20px rgba(15,23,42,0.8);
}

.logo-icon::before,
.logo-icon::after {
    content: "";
    position: absolute;
    left: 7px;
    right: 7px;
    height: 3px;
    border-radius: 999px;
    background: rgba(15,23,42,0.85);
}

.logo-icon::before {
    top: 9px;
}

.logo-icon::after {
    bottom: 9px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-title {
    font-weight: 600;
    letter-spacing: 0.03em;
    font-size: 1.05rem;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.main-nav a {
    margin-left: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

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

.site-main {
    padding: 2rem 0 3rem;
}

.site-footer {
    border-top: 1px solid var(--color-border);
    background: #020617;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

h1, h2, h3, h4 {
    margin-top: 0;
    font-weight: 600;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.1fr);
    gap: 2.5rem;
    align-items: center;
    margin-bottom: 2.5rem;
}

.hero-kicker {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-accent-green);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.hero p.lead {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1rem;
}

.button,
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 1.1rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    background: var(--color-accent);
    color: #f9fafb;
    box-shadow: 0 10px 25px rgba(15,23,42,0.9);
}

.button.secondary {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    box-shadow: none;
}

.button:hover,
button:hover {
    background: var(--color-accent-soft);
    text-decoration: none;
}

.button.secondary:hover {
    background: rgba(55,65,81,0.5);
    border-color: rgba(156,163,175,0.9);
}

.hero-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.hero-card {
    background: radial-gradient(circle at top left, rgba(79,70,229,0.2), transparent 60%),
                linear-gradient(to bottom right, #020617, #020617);
    border-radius: 1.25rem;
    padding: 1.25rem;
    border: 1px solid rgba(75,85,99,0.8);
    box-shadow: 0 18px 40px rgba(15,23,42,0.9);
}

.hero-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.hero-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.75rem;
}

.badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    border: 1px solid rgba(148,163,184,0.8);
    color: var(--color-text-muted);
    background: rgba(15,23,42,0.6);
}

.section-subheading {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
    margin-bottom: 0.4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.feature-card {
    background: rgba(15,23,42,0.9);
    border-radius: 1rem;
    border: 1px solid rgba(55,65,81,0.9);
    padding: 1rem;
    font-size: 0.9rem;
}

.feature-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
}

.feature-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.inline-app-preview {
    background: rgba(15,23,42,0.9);
    border-radius: 1.25rem;
    border: 1px solid rgba(55,65,81,0.9);
    padding: 1.25rem;
    margin-bottom: 2rem;
}

.inline-app-preview h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.app-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.1fr);
    gap: 1.25rem;
    align-items: flex-start;
}

.card {
    background: rgba(15,23,42,0.9);
    border-radius: 1rem;
    border: 1px solid rgba(75,85,99,0.9);
    padding: 1rem 1.25rem;
    box-shadow: 0 14px 35px rgba(15,23,42,0.9);
}

textarea {
    width: 100%;
    font-family: inherit;
    border-radius: 0.7rem;
    border: 1px solid rgba(55,65,81,0.9);
    padding: 0.6rem 0.8rem;
    min-height: 120px;
    resize: vertical;
    background: rgba(15,23,42,0.8);
    color: var(--color-text);
}

textarea::placeholder {
    color: rgba(148,163,184,0.8);
}

.hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.35rem;
}

.app-output h3 {
    margin-bottom: 0.5rem;
}

.locked {
    position: relative;
    opacity: 0.4;
    filter: blur(1px);
}

.locked::after {
    content: "🔒 Locked";
    position: absolute;
    top: 0.6rem;
    right: 0.8rem;
    font-size: 0.8rem;
    background: rgba(15,23,42,0.9);
    color: #f9fafb;
    padding: 2px 6px;
    border-radius: 999px;
    border: 1px solid rgba(148,163,184,0.9);
}

.unlock-hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

.error {
    color: var(--color-danger);
    font-size: 0.85rem;
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(2,6,23,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: #020617;
    border-radius: 1rem;
    padding: 1.25rem 1.5rem;
    max-width: 420px;
    width: 100%;
    border: 1px solid rgba(75,85,99,0.9);
    box-shadow: 0 18px 45px rgba(0,0,0,0.9);
}

.modal-content h3 {
    margin-top: 0;
}

.email-form-container {
    margin: 0.75rem 0 1rem;
    padding: 0.75rem;
    border-radius: 0.75rem;
    border: 1px dashed rgba(75,85,99,0.9);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    background: rgba(15,23,42,0.5);
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: minmax(0, 1fr);
        gap: 1.5rem;
    }
    .app-layout {
        grid-template-columns: minmax(0, 1fr);
    }
    .main-nav a {
        margin-left: 0.7rem;
    }
}

@media (max-width: 640px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .main-nav {
        display: flex;
        flex-wrap: wrap;
    }
    .hero h1 {
        font-size: 1.6rem;
    }
    .features-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}