:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --accent: #8b5cf6;
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background-color: var(--bg-surface); color: var(--text-main); line-height: 1.6; }
.bg-gray { background-color: var(--bg-main); }
a { text-decoration: none; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Typography */
.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn { display: inline-block; padding: 10px 20px; border-radius: 8px; font-weight: 500; cursor: pointer; text-align: center; transition: 0.2s; border: none; font-size: 14px;}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: white; border: 1px solid var(--border); color: var(--text-main); }
.btn-secondary:hover { background: var(--bg-main); }
.btn-danger { background: #ef4444; color: white; }
.btn-block { display: block; width: 100%; }
.btn-lg { padding: 14px 28px; font-size: 16px; }

/* Grid & Cards */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }

/* Forms & Auth */
.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.auth-card { width: 100%; max-width: 400px; padding: 40px; background: white; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); }
.auth-header { text-align: center; margin-bottom: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 8px; font-size: 14px; color: var(--text-main); }
.form-control { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: 14px; transition: border 0.2s; }
.form-control:focus { outline: none; border-color: var(--primary); }

/* Landing Elements */
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; }
.logo { font-size: 24px; font-weight: 800; color: var(--text-main); }
.nav-links { display: flex; gap: 20px; align-items: center; }
.hero { text-align: center; padding: 100px 0; }
.hero-title { font-size: 56px; font-weight: 800; line-height: 1.1; margin-bottom: 20px; letter-spacing: -1px; }
.hero-subtitle { font-size: 20px; color: var(--text-muted); max-width: 700px; margin: 0 auto 40px auto; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 50px; }
.terminal-box { background: #0f172a; color: #10b981; padding: 20px; border-radius: 12px; font-family: monospace; max-width: 600px; margin: 0 auto; text-align: left; overflow-x: auto; }
.section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 50px; font-size: 32px; font-weight: 700; }
.footer { text-align: center; padding: 40px 0; color: var(--text-muted); border-top: 1px solid var(--border); margin-top: 60px; }