/* ============================================================================
   Admin BluPRO - Stylesheet
   Dark theme matching Blu Shift Creative branding
   ============================================================================ */

/* ----------------------------------------------------------------------------
   Variables
   ---------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-bg-primary: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;
    
    --color-border: #334155;
    --color-border-light: #475569;
    
    --color-text-primary: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-purple: #a78bfa;
    
    /* Sizing */
    --sidebar-width: 260px;
    --header-height: 64px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-full: 9999px;
}

/* ----------------------------------------------------------------------------
   Reset & Base
   ---------------------------------------------------------------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    color: var(--color-accent-hover);
}

/* ----------------------------------------------------------------------------
   App Container
   ---------------------------------------------------------------------------- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* ----------------------------------------------------------------------------
   Sidebar
   ---------------------------------------------------------------------------- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-primary);
}

.logo:hover {
    color: var(--color-text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-text small {
    font-weight: 400;
    color: var(--color-text-muted);
    margin-left: 0.25rem;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    margin-bottom: 0.25rem;
}

.nav-item:hover {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.nav-item.active {
    background-color: var(--color-accent);
    color: white;
}

.nav-icon {
    font-size: 1.125rem;
    width: 24px;
    text-align: center;
}

.nav-badge {
    margin-left: auto;
    background-color: var(--color-error);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
}

.nav-divider {
    height: 1px;
    background-color: var(--color-border);
    margin: 1rem 0;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.user-avatar-placeholder {
    background-color: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.user-details {
    min-width: 0;
}

.user-name {
    font-weight: 500;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logout-form {
    margin: 0;
}

.btn-logout {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.btn-logout:hover {
    opacity: 1;
}

/* ----------------------------------------------------------------------------
   Main Content
   ---------------------------------------------------------------------------- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.content-header {
    height: var(--header-height);
    padding: 0 2rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--color-bg-secondary);
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.page-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.content-body {
    flex: 1;
    padding: 2rem;
}

/* ----------------------------------------------------------------------------
   Flash Messages
   ---------------------------------------------------------------------------- */
.flash {
    padding: 1rem 1.5rem;
    margin: 0 2rem;
    margin-top: 1rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flash-success {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.flash-error {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.flash-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    color: var(--color-warning);
}

.flash-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
}

.flash-close:hover {
    opacity: 1;
}

/* ----------------------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-border-light);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background-color: var(--color-border-light);
    color: var(--color-text-primary);
}

.btn-danger {
    background-color: var(--color-error);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

/* ----------------------------------------------------------------------------
   Cards
   ---------------------------------------------------------------------------- */
.card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg-primary);
}

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

.stat-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.stat-change {
    font-size: 0.75rem;
    margin-top: 0.5rem;
}

.stat-change.positive {
    color: var(--color-success);
}

.stat-change.negative {
    color: var(--color-error);
}

/* ----------------------------------------------------------------------------
   Forms
   ---------------------------------------------------------------------------- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.form-checkbox input {
    width: 1.25rem;
    height: 1.25rem;
}

/* ----------------------------------------------------------------------------
   Tables
   ---------------------------------------------------------------------------- */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    background-color: var(--color-bg-primary);
}

.table tbody tr:hover {
    background-color: var(--color-bg-tertiary);
}

/* ----------------------------------------------------------------------------
   Badges
   ---------------------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.badge-gray {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
}

.badge-blue {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--color-accent);
}

.badge-green {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
}

.badge-yellow {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
}

.badge-red {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--color-error);
}

.badge-purple {
    background-color: rgba(167, 139, 250, 0.2);
    color: var(--color-purple);
}

/* ----------------------------------------------------------------------------
   Kanban Board
   ---------------------------------------------------------------------------- */
.kanban-board {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.kanban-column {
    min-width: 280px;
    max-width: 280px;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
}

.column-header {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.column-title {
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.column-count {
    background-color: var(--color-bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.column-cards {
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
    overflow-y: auto;
    max-height: 60vh;
}

.pipeline-card {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.pipeline-card-username {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.pipeline-card-name {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.75rem;
}

.pipeline-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
}

.pipeline-card-date {
    color: var(--color-text-muted);
}

/* ----------------------------------------------------------------------------
   Modal
   ---------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* ----------------------------------------------------------------------------
   Utilities
   ---------------------------------------------------------------------------- */
.text-muted {
    color: var(--color-text-muted);
}

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-error {
    color: var(--color-error);
}

.text-sm {
    font-size: 0.875rem;
}

.text-xs {
    font-size: 0.75rem;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }

.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

/* ----------------------------------------------------------------------------
   Empty States
   ---------------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.empty-state-text {
    margin-bottom: 1.5rem;
}

/* ----------------------------------------------------------------------------
   Loading
   ---------------------------------------------------------------------------- */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--color-bg-tertiary);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ----------------------------------------------------------------------------
   Activity Feed
   ---------------------------------------------------------------------------- */
.activity-item {
    transition: background-color var(--transition-fast);
}

.activity-item:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

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

.activity-icon {
    flex-shrink: 0;
}

/* Activity color variants */
.activity-blue .activity-icon {
    opacity: 1;
}

.activity-green .activity-icon {
    opacity: 1;
}

.activity-red .activity-icon {
    opacity: 1;
}

.activity-purple .activity-icon {
    opacity: 1;
}

.activity-gray .activity-icon {
    opacity: 0.6;
}