/* ═══════════════════════════════════════════════
   KaleidoForge — Design System
   Shared CSS across all pages
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255,255,255,0.03);
    --bg-card-hover: rgba(255,255,255,0.06);
    --bg-card-border: rgba(255,255,255,0.06);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-blue: #818cf8;
    --accent-purple: #a855f7;
    --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7);
    --accent-gradient-hover: linear-gradient(135deg, #7c7ff7, #b76ef9);
    --success: #34d399;
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── Background Orbs ── */
.bg-wrapper { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.bg-orb { position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.12; }
.bg-orb--1 { width: 600px; height: 600px; background: #6366f1; top: -200px; left: -100px; }
.bg-orb--2 { width: 500px; height: 500px; background: #a855f7; bottom: -150px; right: -100px; }
.bg-orb--3 { width: 400px; height: 400px; background: #818cf8; top: 50%; left: 50%; transform: translate(-50%, -50%); opacity: 0.06; }

/* ── Navigation ── */
nav {
    position: sticky; top: 0; z-index: 100;
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--bg-card-border);
    padding: 14px 0;
}
.nav-inner {
    max-width: 1100px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-brand img { height: 28px; }
.nav-brand-name {
    font-size: 1.2rem; font-weight: 700;
    background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-brand-sub {
    font-size: 0.65rem; color: var(--text-muted); font-weight: 500;
    letter-spacing: 0.08em; margin-top: -2px;
}
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
    color: var(--text-secondary); text-decoration: none; font-size: 0.88rem;
    font-weight: 500; transition: color 0.2s; position: relative;
}
.nav-links a:hover { color: white; }
.nav-links a.active { color: white; }
.nav-links a.active::after {
    content: ''; position: absolute; bottom: -6px; left: 0; right: 0;
    height: 2px; background: var(--accent-gradient); border-radius: 1px;
}
.nav-cta {
    background: var(--accent-gradient); color: white; padding: 8px 20px;
    border-radius: 8px; font-weight: 600; font-size: 0.82rem; text-decoration: none;
    transition: var(--transition); white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(99,102,241,0.4); }

/* Mobile hamburger */
.nav-toggle { display: none; background: none; border: none; color: var(--text-secondary); cursor: pointer; padding: 4px; }
.nav-toggle svg { width: 24px; height: 24px; }

/* ── Container ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ── Hero ── */
.hero { text-align: center; padding: 100px 24px 60px; max-width: 800px; margin: 0 auto; }
.hero-badge {
    display: inline-block; background: rgba(99,102,241,0.15);
    border: 1px solid rgba(99,102,241,0.3); color: var(--accent-blue);
    padding: 6px 16px; border-radius: 20px;
    font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em; margin-bottom: 24px;
}
.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem); font-weight: 800;
    letter-spacing: -0.03em; margin-bottom: 20px; line-height: 1.15;
}
.hero h1 span {
    background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto 32px; line-height: 1.7; }
.hero-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── Buttons ── */
.btn-primary {
    background: var(--accent-gradient); color: white; padding: 14px 28px;
    border-radius: var(--radius-sm); font-weight: 600; text-decoration: none;
    transition: var(--transition); font-size: 0.95rem; display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(99,102,241,0.4); }
.btn-secondary {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
    color: white; padding: 14px 28px; border-radius: var(--radius-sm); font-weight: 600;
    text-decoration: none; transition: var(--transition); font-size: 0.95rem;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-outline {
    background: transparent; border: 1px solid rgba(99,102,241,0.4);
    color: var(--accent-blue); padding: 10px 22px; border-radius: var(--radius-sm);
    font-weight: 600; text-decoration: none; transition: var(--transition); font-size: 0.88rem;
}
.btn-outline:hover { background: rgba(99,102,241,0.1); border-color: var(--accent-blue); }

/* ── Sections ── */
section { padding: 80px 0; }
.section-title {
    font-size: 2rem; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.02em;
}
.section-subtitle {
    color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 48px; max-width: 600px;
}

/* ── Cards Grid ── */
.card-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px;
}
.card {
    background: var(--bg-card); border: 1px solid var(--bg-card-border);
    border-radius: var(--radius); padding: 32px; transition: var(--transition);
}
.card:hover {
    border-color: rgba(99,102,241,0.3); transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.card-icon {
    width: 44px; height: 44px; border-radius: 12px;
    background: rgba(99,102,241,0.1); display: flex;
    align-items: center; justify-content: center; margin-bottom: 16px;
}
.card-icon svg { width: 22px; height: 22px; color: var(--accent-blue); }
.card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.6; }
.card-tag {
    display: inline-block; padding: 3px 10px; border-radius: 6px;
    font-size: 0.72rem; font-weight: 600; margin-top: 12px; letter-spacing: 0.03em;
}
.card-tag--blue { background: rgba(99,102,241,0.15); color: var(--accent-blue); }
.card-tag--purple { background: rgba(168,85,247,0.15); color: var(--accent-purple); }
.card-tag--green { background: rgba(52,211,153,0.15); color: var(--success); }

/* ── Content Block ── */
.content-block { max-width: 720px; }
.content-block h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 16px; margin-top: 48px; }
.content-block h2:first-child { margin-top: 0; }
.content-block h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; margin-top: 32px; }
.content-block p { color: var(--text-secondary); margin-bottom: 16px; font-size: 0.95rem; }
.content-block ul { color: var(--text-secondary); margin-bottom: 16px; padding-left: 20px; font-size: 0.95rem; }
.content-block li { margin-bottom: 8px; }
.content-block .cta-banner {
    max-width: 1052px;
    width: calc(100vw - 48px);
    margin-left: calc((720px - 100vw + 48px) / 2);
    position: relative;
}
@media (min-width: 1148px) {
    .content-block .cta-banner {
        width: 1052px;
        margin-left: calc((720px - 1052px) / 2);
    }
}

/* ── CTA Banner ── */
.cta-banner {
    margin-top: 48px; padding: 36px; background: var(--bg-card);
    border: 1px solid var(--bg-card-border); border-radius: var(--radius); text-align: center;
}
.cta-banner h3 { margin-bottom: 8px; font-size: 1.2rem; }
.cta-banner p { color: var(--text-secondary); margin-bottom: 24px; font-size: 0.95rem; }

/* ── Footer ── */
footer {
    border-top: 1px solid var(--bg-card-border); padding: 40px 24px;
    text-align: center; color: var(--text-muted); font-size: 0.85rem;
}
footer a { color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
footer a:hover { color: white; }
footer .footer-links { margin-top: 12px; display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .nav-links.open {
        display: flex; flex-direction: column; position: absolute;
        top: 100%; left: 0; right: 0; background: rgba(10,10,15,0.95);
        backdrop-filter: blur(20px); padding: 20px 24px; gap: 16px;
        border-bottom: 1px solid var(--bg-card-border);
    }
    .hero { padding: 60px 24px 40px; }
    .card-grid { grid-template-columns: 1fr; }
    section { padding: 60px 0; }
}