/* styles.css */
/* Simple CRM - Stylesheet */
/* Date: 2025-01-04 */

/* ==================== CSS VARIABLES ==================== */
:root {
    --primary-900: #0a1628;
    --primary-800: #0f2744;
    --primary-700: #1a3a5c;
    --primary-600: #1e4976;
    --primary-500: #2563a8;
    --primary-400: #3b82c4;
    --primary-300: #60a5e8;
    --primary-200: #93c5fd;
    --primary-100: #dbeafe;
    --primary-50: #eff6ff;
    
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal-backdrop: 300;
    --z-modal: 400;
    --z-toast: 500;
    
    --bg-primary: var(--gray-50);
    --bg-secondary: var(--white);
    --bg-tertiary: var(--gray-100);
    --bg-card: var(--white);
    --bg-input: var(--white);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --border-color: var(--gray-200);
    --border-light: var(--gray-100);
}

[data-theme="dark"] {
    --bg-primary: var(--primary-900);
    --bg-secondary: var(--primary-800);
    --bg-tertiary: var(--primary-700);
    --bg-card: var(--primary-800);
    --bg-input: var(--primary-700);
    --text-primary: var(--gray-100);
    --text-secondary: var(--gray-300);
    --text-muted: var(--gray-400);
    --border-color: var(--primary-600);
    --border-light: var(--primary-700);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background-color: var(--bg-primary); color: var(--text-primary); line-height: 1.6; min-height: 100vh; }
a { color: var(--primary-500); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--primary-600); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

.app-container { display: flex; min-height: 100vh; }

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--primary-800) 0%, var(--primary-900) 100%);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-sticky);
    transition: transform var(--transition-normal);
}

.sidebar-header { padding: var(--space-lg); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.sidebar-logo { display: flex; align-items: center; gap: var(--space-sm); font-size: 1.25rem; font-weight: 700; color: var(--white); }
.sidebar-logo svg { width: 32px; height: 32px; }
.sidebar-nav { flex: 1; padding: var(--space-md); overflow-y: auto; }
.nav-section { margin-bottom: var(--space-lg); }
.nav-section-title { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--primary-300); padding: var(--space-sm) var(--space-md); margin-bottom: var(--space-xs); }
.nav-item { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); border-radius: var(--radius-md); color: var(--primary-100); transition: all var(--transition-fast); margin-bottom: 2px; cursor: pointer; }
.nav-item:hover { background: rgba(255, 255, 255, 0.1); color: var(--white); }
.nav-item.active { background: var(--primary-500); color: var(--white); }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.nav-item-badge { margin-left: auto; background: var(--danger); color: var(--white); font-size: 0.75rem; font-weight: 600; padding: 2px 8px; border-radius: var(--radius-full); }
.sidebar-footer { padding: var(--space-md); border-top: 1px solid rgba(255, 255, 255, 0.1); }
.user-menu { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm); border-radius: var(--radius-md); cursor: pointer; transition: background var(--transition-fast); }
.user-menu:hover { background: rgba(255, 255, 255, 0.1); }
.user-avatar { width: 36px; height: 36px; border-radius: var(--radius-full); background: var(--primary-500); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 0.875rem; }
.user-info { flex: 1; min-width: 0; }
.user-name { font-weight: 500; font-size: 0.875rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-status { font-size: 0.75rem; color: var(--primary-300); }

.main-content { flex: 1; margin-left: 260px; min-height: 100vh; display: flex; flex-direction: column; }
.page-header { background: var(--bg-card); border-bottom: 1px solid var(--border-color); padding: var(--space-lg) var(--space-xl); position: sticky; top: 0; z-index: var(--z-sticky); }
.page-header-content { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap; }
.page-title { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); }
.page-subtitle { font-size: 0.875rem; color: var(--text-muted); margin-top: var(--space-xs); }
.page-actions { display: flex; align-items: center; gap: var(--space-sm); }
.page-body { flex: 1; padding: var(--space-xl); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); font-size: 0.875rem; font-weight: 500; border-radius: var(--radius-md); border: none; transition: all var(--transition-fast); white-space: nowrap; }
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--primary-500); color: var(--white); }
.btn-primary:hover { background: var(--primary-600); }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--gray-200); border-color: var(--gray-300); }
.btn-success { background: var(--success); color: var(--white); }
.btn-success:hover { background: #059669; }
.btn-danger { background: var(--danger); color: var(--white); }
.btn-danger:hover { background: #dc2626; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.btn-sm { padding: var(--space-xs) var(--space-sm); font-size: 0.8125rem; }
.btn-lg { padding: var(--space-md) var(--space-lg); font-size: 1rem; }
.btn-icon { padding: var(--space-sm); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.form-group { margin-bottom: var(--space-md); }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--text-primary); margin-bottom: var(--space-xs); }
.form-label-optional { font-weight: 400; color: var(--text-muted); }
.form-input, .form-select, .form-textarea { width: 100%; padding: var(--space-sm) var(--space-md); font-size: 0.9375rem; border: 1px solid var(--border-color); border-radius: var(--radius-md); background: var(--bg-input); color: var(--text-primary); transition: all var(--transition-fast); }
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary-500); box-shadow: 0 0 0 3px var(--primary-100); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 100px; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; background-size: 1rem; padding-right: 2.5rem; }
.form-checkbox, .form-radio { display: flex; align-items: center; gap: var(--space-sm); cursor: pointer; }
.form-checkbox input, .form-radio input { width: 18px; height: 18px; accent-color: var(--primary-500); }
.form-hint { font-size: 0.8125rem; color: var(--text-muted); margin-top: var(--space-xs); }
.form-error { font-size: 0.8125rem; color: var(--danger); margin-top: var(--space-xs); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-md); }

.card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; }
.card-header { padding: var(--space-md) var(--space-lg); border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
.card-title { font-size: 1rem; font-weight: 600; color: var(--text-primary); }
.card-body { padding: var(--space-lg); }
.card-footer { padding: var(--space-md) var(--space-lg); border-top: 1px solid var(--border-color); background: var(--bg-tertiary); }

.table-container { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: var(--space-sm) var(--space-md); text-align: left; border-bottom: 1px solid var(--border-color); }
.table th { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); background: var(--bg-tertiary); position: sticky; top: 0; }
.table td { font-size: 0.875rem; color: var(--text-primary); }
.table tbody tr { transition: background var(--transition-fast); }
.table tbody tr:hover { background: var(--bg-tertiary); }
.table-sortable th { cursor: pointer; user-select: none; }
.table-sortable th:hover { color: var(--text-primary); }
.table-checkbox { width: 40px; }
.table-actions { width: 100px; text-align: right; }

.modal-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(4px); z-index: var(--z-modal-backdrop); display: flex; align-items: center; justify-content: center; padding: var(--space-md); opacity: 0; visibility: hidden; transition: all var(--transition-normal); }
.modal-backdrop.active { opacity: 1; visibility: visible; }
.modal { background: var(--bg-card); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); width: 100%; max-width: 560px; max-height: 90vh; overflow: hidden; display: flex; flex-direction: column; transform: scale(0.95) translateY(20px); transition: transform var(--transition-normal); }
.modal-backdrop.active .modal { transform: scale(1) translateY(0); }
.modal-lg { max-width: 800px; }
.modal-xl { max-width: 1100px; }
.modal-header { padding: var(--space-lg); border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
.modal-title { font-size: 1.125rem; font-weight: 600; }
.modal-close { width: 32px; height: 32px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: var(--text-muted); transition: all var(--transition-fast); }
.modal-close:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.modal-body { padding: var(--space-lg); overflow-y: auto; flex: 1; }
.modal-footer { padding: var(--space-md) var(--space-lg); border-top: 1px solid var(--border-color); display: flex; align-items: center; justify-content: flex-end; gap: var(--space-sm); }

.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; font-size: 0.75rem; font-weight: 500; border-radius: var(--radius-full); }
.badge-primary { background: var(--primary-100); color: var(--primary-700); }
.badge-success { background: var(--success-light); color: #065f46; }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-danger { background: var(--danger-light); color: #991b1b; }
.badge-gray { background: var(--gray-100); color: var(--gray-700); }

.tag { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; font-size: 0.75rem; font-weight: 500; border-radius: var(--radius-md); background: var(--primary-100); color: var(--primary-700); }
.tag-remove { width: 14px; height: 14px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: currentColor; opacity: 0.6; cursor: pointer; transition: opacity var(--transition-fast); }
.tag-remove:hover { opacity: 1; }

.avatar { width: 40px; height: 40px; border-radius: var(--radius-full); background: var(--primary-500); color: var(--white); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 0.875rem; flex-shrink: 0; }
.avatar-sm { width: 32px; height: 32px; font-size: 0.75rem; }
.avatar-lg { width: 56px; height: 56px; font-size: 1.125rem; }

.dropdown { position: relative; display: inline-block; }
.dropdown-menu { position: absolute; top: 100%; right: 0; min-width: 180px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); z-index: var(--z-dropdown); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: all var(--transition-fast); }
.dropdown.active .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(4px); }
.dropdown-item { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); font-size: 0.875rem; color: var(--text-primary); transition: background var(--transition-fast); cursor: pointer; }
.dropdown-item:hover { background: var(--bg-tertiary); }
.dropdown-item svg { width: 16px; height: 16px; color: var(--text-muted); }
.dropdown-divider { height: 1px; background: var(--border-color); margin: var(--space-xs) 0; }

.tabs { display: flex; border-bottom: 1px solid var(--border-color); gap: var(--space-xs); }
.tab { padding: var(--space-sm) var(--space-md); font-size: 0.875rem; font-weight: 500; color: var(--text-muted); background: transparent; border: none; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all var(--transition-fast); cursor: pointer; }
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--primary-500); border-bottom-color: var(--primary-500); }
.tab-content { padding: var(--space-lg) 0; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.search-box { position: relative; width: 100%; max-width: 400px; }
.search-box svg { position: absolute; left: var(--space-md); top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--text-muted); pointer-events: none; }
.search-box input { width: 100%; padding: var(--space-sm) var(--space-md); padding-left: 2.75rem; font-size: 0.875rem; border: 1px solid var(--border-color); border-radius: var(--radius-md); background: var(--bg-input); color: var(--text-primary); transition: all var(--transition-fast); }
.search-box input:focus { outline: none; border-color: var(--primary-500); box-shadow: 0 0 0 3px var(--primary-100); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: var(--space-md); }
.stat-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: var(--space-lg); }
.stat-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-sm); }
.stat-card-title { font-size: 0.875rem; color: var(--text-muted); font-weight: 500; }
.stat-card-icon { width: 40px; height: 40px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; }
.stat-card-icon svg { width: 20px; height: 20px; }
.stat-card-value { font-size: 1.75rem; font-weight: 700; color: var(--text-primary); line-height: 1.2; }
.stat-card-change { font-size: 0.8125rem; margin-top: var(--space-xs); }
.stat-card-change.positive { color: var(--success); }
.stat-card-change.negative { color: var(--danger); }

.pipeline { display: flex; gap: var(--space-md); overflow-x: auto; padding-bottom: var(--space-md); }
.pipeline-column { flex: 0 0 280px; background: var(--bg-tertiary); border-radius: var(--radius-lg); display: flex; flex-direction: column; max-height: calc(100vh - 280px); }
.pipeline-header { padding: var(--space-md); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border-color); }
.pipeline-title { font-weight: 600; font-size: 0.875rem; }
.pipeline-count { font-size: 0.75rem; color: var(--text-muted); background: var(--bg-card); padding: 2px 8px; border-radius: var(--radius-full); }
.pipeline-value { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.pipeline-cards { flex: 1; overflow-y: auto; padding: var(--space-sm); }
.pipeline-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: var(--space-md); margin-bottom: var(--space-sm); cursor: pointer; transition: all var(--transition-fast); }
.pipeline-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-300); }
.pipeline-card-title { font-weight: 500; font-size: 0.875rem; margin-bottom: var(--space-xs); }
.pipeline-card-value { font-size: 1rem; font-weight: 600; color: var(--primary-600); }
.pipeline-card-meta { font-size: 0.75rem; color: var(--text-muted); margin-top: var(--space-sm); display: flex; align-items: center; gap: var(--space-sm); }
.pipeline-card.dragging { opacity: 0.5; transform: rotate(3deg); }

.empty-state { text-align: center; padding: var(--space-2xl); }
.empty-state-icon { width: 80px; height: 80px; margin: 0 auto var(--space-lg); background: var(--bg-tertiary); border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; }
.empty-state-icon svg { width: 40px; height: 40px; color: var(--text-muted); }
.empty-state-title { font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-sm); }
.empty-state-text { color: var(--text-muted); margin-bottom: var(--space-lg); max-width: 400px; margin-left: auto; margin-right: auto; }

.toast-container { position: fixed; bottom: var(--space-lg); right: var(--space-lg); z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--space-sm); }
.toast { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); padding: var(--space-md); display: flex; align-items: flex-start; gap: var(--space-sm); min-width: 300px; max-width: 450px; transform: translateX(120%); transition: transform var(--transition-normal); }
.toast.show { transform: translateX(0); }
.toast-icon { width: 20px; height: 20px; flex-shrink: 0; }
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--danger); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-content { flex: 1; }
.toast-title { font-weight: 500; font-size: 0.875rem; }
.toast-message { font-size: 0.8125rem; color: var(--text-muted); margin-top: 2px; }
.toast-close { width: 24px; height: 24px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: var(--text-muted); cursor: pointer; transition: all var(--transition-fast); }
.toast-close:hover { background: var(--bg-tertiary); color: var(--text-primary); }

.loading-spinner { width: 40px; height: 40px; border: 3px solid var(--border-color); border-top-color: var(--primary-500); border-radius: var(--radius-full); animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay { position: fixed; inset: 0; background: rgba(255, 255, 255, 0.8); display: flex; align-items: center; justify-content: center; z-index: var(--z-modal); }
[data-theme="dark"] .loading-overlay { background: rgba(10, 22, 40, 0.8); }
.skeleton { background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

.timeline { position: relative; padding-left: var(--space-xl); }
.timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--border-color); }
.timeline-item { position: relative; padding-bottom: var(--space-lg); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker { position: absolute; left: calc(-1 * var(--space-xl) + 1px); width: 16px; height: 16px; border-radius: var(--radius-full); background: var(--primary-500); border: 3px solid var(--bg-card); }
.timeline-content { background: var(--bg-tertiary); border-radius: var(--radius-md); padding: var(--space-md); }
.timeline-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-xs); }
.timeline-title { font-weight: 500; font-size: 0.875rem; }
.timeline-date { font-size: 0.75rem; color: var(--text-muted); }
.timeline-text { font-size: 0.875rem; color: var(--text-secondary); }

.detail-header { display: flex; align-items: flex-start; gap: var(--space-lg); padding-bottom: var(--space-lg); border-bottom: 1px solid var(--border-color); margin-bottom: var(--space-lg); }
.detail-avatar { width: 80px; height: 80px; font-size: 2rem; }
.detail-info { flex: 1; }
.detail-name { font-size: 1.5rem; font-weight: 700; margin-bottom: var(--space-xs); }
.detail-subtitle { color: var(--text-muted); font-size: 1rem; }
.detail-meta { display: flex; flex-wrap: wrap; gap: var(--space-md); margin-top: var(--space-sm); }
.detail-meta-item { display: flex; align-items: center; gap: var(--space-xs); font-size: 0.875rem; color: var(--text-secondary); }
.detail-meta-item svg { width: 16px; height: 16px; color: var(--text-muted); }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-lg); }
.detail-section { margin-bottom: var(--space-lg); }
.detail-section-title { font-size: 0.875rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-md); }
.detail-field { margin-bottom: var(--space-md); }
.detail-field-label { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 2px; }
.detail-field-value { font-size: 0.9375rem; }

.auth-container { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: var(--space-lg); background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-900) 100%); }
.auth-card { background: var(--bg-card); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); width: 100%; max-width: 420px; padding: var(--space-2xl); }
.auth-logo { text-align: center; margin-bottom: var(--space-xl); }
.auth-logo svg { width: 48px; height: 48px; color: var(--primary-500); }
.auth-title { font-size: 1.5rem; font-weight: 700; text-align: center; margin-bottom: var(--space-xs); }
.auth-subtitle { text-align: center; color: var(--text-muted); margin-bottom: var(--space-xl); }
.auth-footer { text-align: center; margin-top: var(--space-lg); font-size: 0.875rem; color: var(--text-muted); }
.auth-footer a { font-weight: 500; }

.quick-add-btn { position: fixed; bottom: var(--space-xl); right: var(--space-xl); width: 56px; height: 56px; border-radius: var(--radius-full); background: var(--primary-500); color: var(--white); border: none; box-shadow: var(--shadow-lg); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all var(--transition-fast); z-index: var(--z-sticky); }
.quick-add-btn:hover { background: var(--primary-600); transform: scale(1.05); }
.quick-add-btn svg { width: 24px; height: 24px; }
.quick-add-menu { position: fixed; bottom: calc(var(--space-xl) + 70px); right: var(--space-xl); background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); padding: var(--space-sm); z-index: var(--z-sticky); opacity: 0; visibility: hidden; transform: translateY(10px); transition: all var(--transition-fast); }
.quick-add-menu.active { opacity: 1; visibility: visible; transform: translateY(0); }
.quick-add-item { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); border-radius: var(--radius-md); font-size: 0.875rem; color: var(--text-primary); white-space: nowrap; cursor: pointer; transition: background var(--transition-fast); }
.quick-add-item:hover { background: var(--bg-tertiary); }
.quick-add-item svg { width: 18px; height: 18px; color: var(--text-muted); }

.filters-bar { display: flex; align-items: center; gap: var(--space-md); padding: var(--space-md) 0; flex-wrap: wrap; }
.filter-group { display: flex; align-items: center; gap: var(--space-sm); }
.filter-label { font-size: 0.8125rem; color: var(--text-muted); }
.filter-select { padding: var(--space-xs) var(--space-sm); font-size: 0.8125rem; border: 1px solid var(--border-color); border-radius: var(--radius-md); background: var(--bg-input); color: var(--text-primary); min-width: 120px; }
.active-filters { display: flex; align-items: center; gap: var(--space-sm); flex-wrap: wrap; }
.active-filter { display: inline-flex; align-items: center; gap: 4px; padding: 4px 8px; font-size: 0.75rem; background: var(--primary-100); color: var(--primary-700); border-radius: var(--radius-md); }
.active-filter button { width: 16px; height: 16px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; background: transparent; border: none; color: currentColor; cursor: pointer; opacity: 0.6; }
.active-filter button:hover { opacity: 1; }

.app-footer { padding: var(--space-lg) var(--space-xl); border-top: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; gap: var(--space-sm); font-size: 0.8125rem; color: var(--text-muted); }
.app-footer img { width: 24px; height: 24px; }
.app-footer a { color: var(--text-muted); }
.app-footer a:hover { color: var(--primary-500); }

.mobile-menu-btn { display: none; width: 40px; height: 40px; border-radius: var(--radius-md); background: transparent; border: none; color: var(--text-primary); cursor: pointer; }
.mobile-menu-btn svg { width: 24px; height: 24px; }

.chart-container { position: relative; height: 300px; width: 100%; }
.chart-legend { display: flex; flex-wrap: wrap; gap: var(--space-md); justify-content: center; margin-top: var(--space-md); }
.chart-legend-item { display: flex; align-items: center; gap: var(--space-xs); font-size: 0.8125rem; color: var(--text-secondary); }
.chart-legend-color { width: 12px; height: 12px; border-radius: 2px; }

.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

@media (max-width: 1024px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .mobile-menu-btn { display: flex; align-items: center; justify-content: center; }
    .page-header-content { flex-direction: column; align-items: flex-start; }
    .page-actions { width: 100%; flex-wrap: wrap; }
}

@media (max-width: 768px) {
    .page-body { padding: var(--space-md); }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .detail-header { flex-direction: column; align-items: center; text-align: center; }
    .detail-meta { justify-content: center; }
    .pipeline { flex-direction: column; }
    .pipeline-column { flex: 0 0 auto; max-height: 400px; }
    .modal { max-height: 100vh; border-radius: 0; }
    .quick-add-btn { bottom: var(--space-md); right: var(--space-md); }
    .quick-add-menu { bottom: calc(var(--space-md) + 70px); right: var(--space-md); }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .auth-card { padding: var(--space-lg); }
}

@media print {
    .sidebar, .quick-add-btn, .quick-add-menu, .toast-container, .modal-backdrop { display: none !important; }
    .main-content { margin-left: 0; }
    .page-header { position: static; }
}

/* ==================== SESSION 2-4 ADDITIONS ==================== */

/* Drag and drop styles */
.pipeline-cards.drag-over {
    background: var(--primary-100);
    border: 2px dashed var(--primary-400);
}

.pipeline-card.dragging {
    opacity: 0.5;
    transform: rotate(2deg);
}

/* Selected row */
tr.selected {
    background: var(--primary-50) !important;
}

/* Bulk actions bar */
.bulk-actions {
    border-bottom: 1px solid var(--border-color);
}

/* Code/kbd styles */
code, kbd {
    font-family: var(--font-mono);
    font-size: 0.875em;
}

/* Score bar */
.score-bar {
    width: 40px;
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}

.score-bar-fill {
    height: 100%;
    transition: width 0.3s ease;
}

/* Link styles in detail views */
.detail-field-value a {
    color: var(--primary-500);
}

.detail-field-value a:hover {
    text-decoration: underline;
}

/* Activity type badges */
.activity-type-call { background: var(--info-light); color: var(--info); }
.activity-type-email { background: var(--success-light); color: var(--success); }
.activity-type-meeting { background: var(--warning-light); color: var(--warning); }
.activity-type-note { background: var(--gray-100); color: var(--gray-600); }

/* Smooth transitions for theme switching */
body, .sidebar, .main-content, .card, .modal {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Print styles for detail views */
@media print {
    .modal-backdrop {
        position: static;
        background: none;
        backdrop-filter: none;
    }
    
    .modal {
        position: static;
        max-width: none;
        max-height: none;
        box-shadow: none;
        border: none;
    }
    
    .modal-footer,
    .tabs,
    button {
        display: none !important;
    }
}

/* Onboarding modal */
.onboarding-step {
    text-align: center;
    padding: var(--space-lg);
}

/* Notification permission prompt */
.notification-prompt {
    background: var(--info-light);
    border: 1px solid var(--info);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
}

/* CSV mapping table */
.csv-mapping-table select {
    min-width: 150px;
}

/* Stale leads warning */
.stale-leads-alert {
    border-left: 4px solid var(--warning);
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* Dark mode refinements */
[data-theme="dark"] {
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

[data-theme="dark"] .avatar {
    background: var(--primary-400);
}

[data-theme="dark"] .badge-gray {
    background: var(--gray-700);
    color: var(--gray-200);
}

[data-theme="dark"] .pipeline-column {
    background: var(--primary-700);
}

[data-theme="dark"] .stat-card-icon {
    opacity: 0.9;
}

[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, var(--gray-700) 25%, var(--gray-600) 50%, var(--gray-700) 75%);
    background-size: 200% 100%;
}

/* Animation for quick add menu */
.quick-add-menu {
    transform-origin: bottom right;
}

.quick-add-menu.active {
    animation: popIn 0.2s ease-out;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Better mobile touch targets */
@media (max-width: 768px) {
    .btn {
        min-height: 44px;
    }
    
    .nav-item {
        padding: var(--space-md);
    }
    
    .table td, .table th {
        padding: var(--space-sm);
    }
}