/* --- DESIGN SYSTEM --- */
:root {
    --bg-deep: #0B1F2A;
    --bg-alt: #0F172A;
    --surface: #1F2937;
    --accent: #3B82F6;
    --accent-teal: #14B8A6;
    --text-primary: #E5E7EB;
    --text-secondary: #9CA3AF;
    --border: rgba(255, 255, 255, 0.08);
    --container-width: 1100px;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* --- RESET & BASE --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background-color: var(--bg-deep);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 40px;
}

section { padding: 120px 0; }
.bg-alt { background-color: var(--bg-alt); }
.center-text { text-align: center; }
.label {
    display: block;
    color: var(--accent);
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

h1, h2, h3 { font-weight: 500; line-height: 1.2; color: #fff; }
h1 { font-size: 3.5rem; margin-bottom: 24px; letter-spacing: -0.02em; }
h2 { font-size: 2.2rem; margin-bottom: 20px; }
h3 { font-size: 1.2rem; margin-bottom: 12px; }

p { color: var(--text-secondary); font-size: 1.1rem; max-width: 550px; }
.max-width-600 { max-width: 600px; margin-left: auto; margin-right: auto; }

/* --- NAVIGATION --- */
.nav-container {
    position: fixed;
    top: 0; width: 100%;
    z-index: 100;
    background: rgba(11, 31, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { display: flex; align-items: center; gap: 12px; font-weight: 600; font-size: 14px; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { text-decoration: none; color: var(--text-secondary); font-size: 14px; transition: color 0.2s; }
.nav-links a:hover { color: var(--accent); }

/* --- BUTTONS --- */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 14px 28px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.2s, background 0.2s;
}
.btn-primary:hover { transform: translateY(-2px); background: #2563EB; }
.btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    color: var(--text-primary);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: background 0.2s;
}
.btn-secondary:hover { background: var(--surface); }
.btn-sm {
    padding: 8px 16px;
    background: var(--accent);
    color: white;
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
}

/* --- GRID SYSTEM --- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 60px; }

/* --- COMPONENT STYLES --- */
.hero { padding-top: 200px; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 60px; }
.cta-group { display: flex; gap: 16px; margin-top: 40px; }

.visual-box {
    background: rgba(31, 41, 55, 0.3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 60px;
}
.step { border-top: 1px solid var(--border); padding-top: 24px; }
.step-num { color: var(--accent); font-family: monospace; font-size: 14px; display: block; margin-bottom: 12px; }

.card {
    background: var(--surface);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
}
.card-icon { color: var(--accent); font-size: 24px; margin-bottom: 20px; }

.studio-panel {
    background: linear-gradient(145deg, #1F2937 0%, #0B1F2A 100%);
    padding: 80px;
    border-radius: 12px;
    border: 1px solid var(--border);
    text-align: center;
}
.module-tags { display: flex; justify-content: center; gap: 12px; margin-top: 32px; }
.module-tags span {
    font-size: 12px;
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 20px;
    color: var(--text-secondary);
}

.diff-list { display: flex; flex-direction: column; gap: 32px; }
.diff-item strong { display: block; color: #fff; margin-bottom: 8px; font-size: 14px; text-transform: uppercase; }

/* --- FOOTER --- */
footer { padding: 60px 0; border-top: 1px solid var(--border); }
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* --- ANIMATION --- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .grid-2, .hero { grid-template-columns: 1fr; gap: 40px; }
    .grid-3, .workflow-grid { grid-template-columns: 1fr; }
    h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
    section { padding: 80px 0; }
    .studio-panel { padding: 40px 20px; }
}