/* 
 * Enterprise-Grade Vanilla CSS 
 * Premium Aesthetic: Dark Mode, Glassmorphism, Modern Typography
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --border-color: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    --radius-md: 8px;
    --radius-lg: 12px;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
}

/* App Header */
.app-header {
    background-color: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header .logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.app-header nav a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.app-header nav a:hover {
    color: var(--text-primary);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Typography */
h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
    box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3), 0 2px 4px -1px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Inbox & Leads */
.inbox .actions {
    margin: 2rem 0;
}

.empty-state {
    padding: 3rem;
    text-align: center;
    background: var(--surface-color);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
}

/* Metrics Dashboard */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s;
}

.metric-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-value.accent { color: var(--accent-color); }
.metric-value.success { color: var(--success); }
.metric-value.warning { color: var(--warning); }

/* Notes Section */
.notes-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.notes-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.note-card {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    border-left: 3px solid var(--accent-color);
}

.note-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.note-author {
    font-weight: 600;
    color: var(--text-primary);
}

.note-content {
    font-size: 0.95rem;
    line-height: 1.5;
}

.note-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.note-form textarea {
    width: 100%;
    min-height: 80px;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--background-color);
    color: var(--text-primary);
    font-family: inherit;
    resize: vertical;
}

.note-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-primary {
    align-self: flex-start;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: var(--accent-color);
}

/* Dual Pane Dashboard */
.dashboard-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    height: calc(100vh - 180px);
}

.lead-inbox {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.lead-item {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lead-item:hover {
    background: var(--surface-hover);
}

.lead-item:last-child {
    border-bottom: none;
}

.lead-info h3 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    font-weight: 600;
}

.lead-info p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.icp-score {
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.1);
}

.score-high { color: var(--success); background: rgba(16, 185, 129, 0.1); }
.score-med { color: var(--warning); background: rgba(245, 158, 11, 0.1); }
.score-low { color: var(--danger); background: rgba(239, 68, 68, 0.1); }

.lead-detail-pane {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    overflow-y: auto;
}

.detail-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    text-align: center;
}

/* AI Analysis Block */
.ai-analysis-block {
    background: rgba(59, 130, 246, 0.05);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    margin-top: 2rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.ai-analysis-block h4 {
    margin: 0 0 0.5rem 0;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}