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

:root {
    /* 21st.dev Developer-First Light Palette */
    --bg-deep: #f9fafb;     /* zinc-50 */
    --bg-surface: #f4f4f5;  /* zinc-100 */
    --bg-card: #ffffff;     /* white */
    
    --primary: #09090b;     /* zinc-950 */
    --primary-glow: rgba(0, 0, 0, 0.05);
    --accent: #71717a;      /* zinc-500 */
    --accent-glow: rgba(0, 0, 0, 0.02);
    
    --success: #10b981;     /* emerald-500 */
    --danger: #ef4444;      /* red-500 */
    --warning: #f59e0b;     /* amber-500 */
    
    --text-main: #09090b;   /* zinc-950 */
    --text-muted: #71717a;  /* zinc-500 */
    --text-dim: #a1a1aa;    /* zinc-400 */
    
    --border-main: #e4e4e7;   /* zinc-200 */
    --border-bright: #d4d4d8; /* zinc-300 */
    
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-heading: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --radius-xl: 16px;
    --radius-lg: 12px;
    --radius-md: 8px;
    
    --shadow-main: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --transition: all 0.2s ease-out;
}

/* Base Reset */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }

body {
    background-color: var(--bg-deep);
    color: var(--text-main);
    min-height: 100vh;
    overflow: hidden;
    position: relative;
}

/* Animations */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.animate-fade { animation: fadeIn 0.4s var(--transition) forwards; }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Layout Structure */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
    padding: 16px;
    gap: 16px;
}

/* Sidebar: Clean structural left-rail */
.sidebar {
    width: 260px;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-main);
    padding: 32px 0;
    transition: var(--transition);
}

.logo-container {
    padding: 0 32px 32px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-orb {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 8px;
    display: grid; place-items: center;
    color: #fff;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.nav-section { padding: 0 16px; margin-bottom: 32px; }
.nav-label { font-size: 0.7rem; color: var(--text-muted); font-weight: 600; margin: 0 16px 8px; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-item:hover { color: var(--text-main); background: rgba(0,0,0,0.03); }
.nav-item.active { color: var(--text-main); background: var(--bg-card); border: 1px solid var(--border-main); box-shadow: 0 1px 2px rgba(0,0,0,0.02); font-weight: 600; }

/* Main Content Area */
.main-content {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-main);
    padding: 48px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 48px;
}

.page-title { font-family: var(--font-heading); font-size: 2.2rem; font-weight: 700; letter-spacing: -1px; color: var(--text-main); }

/* Panels & Cards */
.glass-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.glass-panel:hover { border-color: var(--border-bright); box-shadow: var(--shadow-hover); }

.stat-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-label { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); }
.stat-value { font-family: var(--font-heading); font-size: 2.2rem; font-weight: 700; line-height: 1.1; color: var(--text-main); }

/* Form Elite */
.v8-input {
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: var(--text-main);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
    width: 100%;
}

.v8-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(9, 9, 11, 0.1); }

.v8-btn {
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-main);
    background: var(--bg-card);
    color: var(--text-main);
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}

.v8-btn:hover { background: var(--bg-surface); }

.v8-btn.primary {
    background: var(--primary);
    color: #fff;
    border: 1px solid var(--primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.v8-btn.primary:hover { transform: scale(0.98); box-shadow: none; background: #27272a; border-color: #27272a; }

.v8-btn.danger { color: var(--danger); border-color: var(--border-main); }
.v8-btn.danger:hover { background: #fef2f2; border-color: var(--danger); }

/* Table Professional */
.v8-table { width: 100%; border-collapse: separate; border-spacing: 0; }
.v8-table th { padding: 12px 24px; text-align: left; font-size: 0.75rem; font-weight: 600; color: var(--text-muted); border-bottom: 1px solid var(--border-main); }
.v8-table td { padding: 16px 24px; background: var(--bg-card); border-bottom: 1px solid var(--border-main); font-size: 0.9rem; }
.v8-table tr:hover td { background: var(--bg-surface); }

/* Grid Registry Status Pulse */
.status-indicator { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 8px; }
.status-indicator.online { background: var(--success); }
.status-indicator.offline { background: var(--danger); }

/* Terminal Override for Light Mode */
.v8-terminal { background: #18181b !important; color: #a1a1aa !important; border-radius: var(--radius-md); padding: 16px; font-family: var(--font-mono); overflow-y: auto; }

/* Modal System */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(255,255,255,0.6); backdrop-filter: blur(4px);
    z-index: 10000; display: none; align-items: center; justify-content: center; padding: 24px;
}

.modal-content {
    background: var(--bg-card); border: 1px solid var(--border-main);
    width: 100%; max-width: 480px; border-radius: var(--radius-lg); padding: 32px;
    box-shadow: var(--shadow-main); position: relative;
    animation: fadeIn 0.2s var(--transition);
}

/* Utilities */
.text-gradient { color: var(--text-main); } /* Removed gradient for cleaner text */
.mb-4 { margin-bottom: 1rem; }
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* Login Screen Styles */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: var(--bg-deep);
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 48px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-main);
}