/**
 * TaskSphere - Main Stylesheet
 * Modern, Clean, Responsive Design
 */

/* ========================================
   CSS Variables
======================================== */
:root {
    /* Primary Colors */
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #3B82F6;
    --primary-bg: #EFF6FF;

    /* Secondary Colors */
    --secondary: #0F172A;
    --secondary-light: #1E293B;

    /* Status Colors */
    --success: #22C55E;
    --success-dark: #16A34A;
    --success-bg: #DCFCE7;

    --warning: #F59E0B;
    --warning-dark: #D97706;
    --warning-bg: #FEF3C7;

    --danger: #EF4444;
    --danger-dark: #DC2626;
    --danger-bg: #FEE2E2;

    --info: #06B6D4;
    --info-dark: #0891B2;
    --info-bg: #CFFAFE;

    /* Grayscale */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;

    /* Background */
    --bg-main: #F8FAFC;
    --bg-card: #FFFFFF;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition: all 0.2s ease;
    --transition-fast: all 0.1s ease;
    --transition-slow: all 0.3s ease;

    /* Spacing */
    --sidebar-width: 260px;
    --header-height: 70px;

    /* Font */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 0.9375rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--bg-main);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 1rem;
}

.text-muted { color: var(--gray-500); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-info { color: var(--info); }

.text-sm { font-size: 0.8125rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ========================================
   Layout
======================================== */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

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

.content-wrapper {
    flex: 1;
    padding: 24px;
    padding-top: calc(var(--header-height) + 24px);
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ========================================
   Grid System
======================================== */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -12px;
}

.col {
    flex: 1;
    padding: 0 12px;
}

.col-12 { width: 100%; flex: 0 0 100%; padding: 0 12px; }
.col-6 { width: 50%; flex: 0 0 50%; padding: 0 12px; }
.col-4 { width: 33.333%; flex: 0 0 33.333%; padding: 0 12px; }
.col-3 { width: 25%; flex: 0 0 25%; padding: 0 12px; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }
.gap-5 { gap: 2rem; }

/* ========================================
   Flexbox Utilities
======================================== */
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-none { display: none; }
.d-block { display: block; }

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-end { justify-content: flex-end; }
.justify-content-start { justify-content: flex-start; }

/* ========================================
   Spacing Utilities
======================================== */
.m-0 { margin: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }

.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.my-1 { margin-top: 0.25rem; margin-bottom: 0.25rem; }
.my-2 { margin-top: 0.5rem; margin-bottom: 0.5rem; }
.my-3 { margin-top: 1rem; margin-bottom: 1rem; }
.my-4 { margin-top: 1.5rem; margin-bottom: 1.5rem; }
.my-5 { margin-top: 2rem; margin-bottom: 2rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 2rem; }

/* ========================================
   Cards
======================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3,
.card-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
}

/* Stat Cards */
.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
}

.stat-icon.primary { background: var(--primary-bg); color: var(--primary); }
.stat-icon.success { background: var(--success-bg); color: var(--success); }
.stat-icon.warning { background: var(--warning-bg); color: var(--warning); }
.stat-icon.danger { background: var(--danger-bg); color: var(--danger); }
.stat-icon.info { background: var(--info-bg); color: var(--info); }

.stat-content h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
    line-height: 1.2;
}

.stat-content p {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin: 4px 0 0;
}

/* ========================================
   Buttons
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

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

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

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

.btn-success:hover {
    background: var(--success-dark);
    color: var(--white);
}

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

.btn-warning:hover {
    background: var(--warning-dark);
    color: var(--white);
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-primary {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius);
}

.btn-icon.btn-sm {
    width: 30px;
    height: 30px;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Button Group */
.btn-group {
    display: inline-flex;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius) 0 0 var(--radius);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* ========================================
   Forms
======================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-control {
    display: block;
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--gray-800);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    transition: var(--transition);
    appearance: none;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-control:disabled {
    background: var(--gray-100);
    cursor: not-allowed;
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--danger-bg);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-text {
    display: block;
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: 4px;
}

.invalid-feedback {
    display: block;
    font-size: 0.8125rem;
    color: var(--danger);
    margin-top: 4px;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.form-check-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.form-check-label {
    font-size: 0.9375rem;
    color: var(--gray-700);
    cursor: pointer;
}

/* Input Group */
.input-group {
    display: flex;
    width: 100%;
}

.input-group .form-control {
    flex: 1;
    border-radius: 0;
}

.input-group .form-control:first-child {
    border-radius: var(--radius) 0 0 var(--radius);
}

.input-group .form-control:last-child {
    border-radius: 0 var(--radius) var(--radius) 0;
}

.input-group .btn {
    border-radius: 0;
}

.input-group .btn:last-child {
    border-radius: 0 var(--radius) var(--radius) 0;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: 0 14px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
    font-size: 0.9375rem;
}

/* Search Input */
.search-input {
    position: relative;
}

.search-input .form-control {
    padding-left: 42px;
}

.search-input svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--gray-400);
}

/* ========================================
   Tables
======================================== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    box-shadow: var(--shadow);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.table th,
.table td {
    padding: 14px 16px;
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-100);
}

.table th {
    background: var(--gray-50);
    font-weight: 600;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    color: var(--gray-600);
    white-space: nowrap;
}

.table tbody tr {
    transition: var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table-actions {
    display: flex;
    gap: 8px;
}

/* ========================================
   Badges
======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--primary-bg);
    color: var(--primary);
}

.badge-secondary {
    background: var(--gray-100);
    color: var(--gray-600);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success-dark);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning-dark);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger-dark);
}

.badge-critical {
    background: var(--danger);
    color: var(--white);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info-dark);
}

/* ========================================
   Alerts
======================================== */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.alert-success {
    background: var(--success-bg);
    border: 1px solid var(--success);
    color: var(--success-dark);
}

.alert-warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning);
    color: var(--warning-dark);
}

.alert-danger {
    background: var(--danger-bg);
    border: 1px solid var(--danger);
    color: var(--danger-dark);
}

.alert-info {
    background: var(--info-bg);
    border: 1px solid var(--info);
    color: var(--info-dark);
}

/* ========================================
   Modals
======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: var(--gray-500);
    cursor: pointer;
    border-radius: var(--radius);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-lg {
    max-width: 700px;
}

.modal-sm {
    max-width: 400px;
}

/* ========================================
   Dropdowns
======================================== */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 180px;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(4px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--gray-700);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.dropdown-item svg {
    width: 16px;
    height: 16px;
    color: var(--gray-500);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-100);
    margin: 8px 0;
}

/* ========================================
   Empty State
======================================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state svg {
    width: 80px;
    height: 80px;
    color: var(--gray-300);
    margin-bottom: 16px;
}

.empty-state h4 {
    font-size: 1.125rem;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--gray-500);
    margin-bottom: 20px;
}

/* ========================================
   Pagination
======================================== */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    padding: 20px;
}

.pagination {
    display: flex;
    gap: 4px;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    font-size: 0.875rem;
    color: var(--gray-700);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
}

.page-link:hover {
    background: var(--gray-50);
    border-color: var(--primary);
    color: var(--primary);
}

.page-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.page-ellipsis {
    display: flex;
    align-items: center;
    padding: 0 8px;
    color: var(--gray-400);
}

/* ========================================
   Page Header
======================================== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.page-subtitle {
    font-size: 0.9375rem;
    color: var(--gray-500);
    margin-top: 4px;
}

.page-actions {
    display: flex;
    gap: 12px;
}

/* ========================================
   Loading Spinner
======================================== */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ========================================
   Avatar
======================================== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--primary-bg);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
    overflow: hidden;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-sm { width: 32px; height: 32px; font-size: 0.8125rem; }
.avatar-lg { width: 56px; height: 56px; font-size: 1.25rem; }
.avatar-xl { width: 80px; height: 80px; font-size: 1.5rem; }

/* ========================================
   Tooltips
======================================== */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 10px;
    background: var(--gray-900);
    color: var(--white);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    pointer-events: none;
    margin-bottom: 6px;
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Progress Bar
======================================== */
.progress {
    height: 8px;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.progress-bar.success { background: var(--success); }
.progress-bar.warning { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }

/* ========================================
   Tabs
======================================== */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab-link {
    padding: 12px 20px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-500);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-link:hover {
    color: var(--gray-700);
}

.tab-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ========================================
   Charts Container
======================================== */
.chart-container {
    position: relative;
    height: 300px;
}

/* ========================================
   Auth Pages
======================================== */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 440px;
    padding: 40px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.auth-logo p {
    color: var(--gray-500);
    font-size: 0.9375rem;
}

.auth-form .form-group {
    margin-bottom: 20px;
}

.auth-form .btn {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--gray-500);
    font-size: 0.9375rem;
}

.auth-footer a {
    color: var(--primary);
    font-weight: 500;
}

/* ========================================
   Notifications Dropdown
======================================== */
.notification-dropdown {
    width: 360px;
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    padding: 14px 16px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    gap: 12px;
    transition: var(--transition-fast);
}

.notification-item:hover {
    background: var(--gray-50);
}

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

.notification-item.unread {
    background: var(--primary-bg);
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-content h5 {
    font-size: 0.875rem;
    margin-bottom: 2px;
}

.notification-content p {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin: 0;
}

.notification-time {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 4px;
}

/* ========================================
   Activity Timeline
======================================== */
.activity-timeline {
    position: relative;
    padding-left: 30px;
}

.activity-timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
}

.activity-item {
    position: relative;
    padding-bottom: 24px;
}

.activity-item:last-child {
    padding-bottom: 0;
}

.activity-item::before {
    content: '';
    position: absolute;
    left: -22px;
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    border: 2px solid var(--white);
}

.activity-item .activity-content {
    font-size: 0.9375rem;
    color: var(--gray-700);
}

.activity-item .activity-time {
    font-size: 0.8125rem;
    color: var(--gray-400);
    margin-top: 4px;
}

/* ========================================
   Utility Classes
======================================== */
.w-100 { width: 100%; }
.w-auto { width: auto; }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.cursor-pointer { cursor: pointer; }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}