/* ============================================
   Modern Aesthetic Admin CSS for POS System
   ============================================ */

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

/* ============================================
   CSS Variables - Modern Color Palette
   ============================================ */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --success-light: #d1fae5;
    --danger-color: #ef4444;
    --danger-light: #fee2e2;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --info-color: #3b82f6;
    --info-light: #dbeafe;
    --dark: #1f2937;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --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 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* ============================================
   Global Typography
   ============================================ */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
    font-weight: 400 !important;
    line-height: 1.6 !important;
    color: var(--gray-800) !important;
    background: var(--gray-50) !important;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

/* ============================================
   Navbar Enhancements
   ============================================ */
.main-header {
    background: var(--primary-gradient) !important;
    box-shadow: var(--shadow-md) !important;
    border-bottom: none !important;
    min-height: 60px !important;
    padding: 0 20px !important;
}

.main-header .navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.01em;
    color: rgba(255, 255, 255, 1) !important;
    text-decoration: none;
}

.main-header .navbar-brand:hover {
    color: rgba(255, 255, 255, 0.95) !important;
    text-decoration: none;
}

.main-header .navbar-brand::before,
.main-header .navbar-brand::after {
    display: none !important;
    content: none !important;
}

.main-header .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    transition: all 0.2s ease;
    border-radius: var(--radius-sm);
    padding: 8px 12px !important;
    margin: 0 4px;
}

.main-header .navbar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    color: var(--white) !important;
    transform: translateY(-1px);
}

/* ============================================
   Header Search Bar & Icons
   ============================================ */
.main-header .navbar-nav .nav-link i,
.main-header .navbar-nav .nav-link svg,
.main-header .navbar-nav .nav-link .fa,
.main-header .navbar-nav .nav-link .fas,
.main-header .navbar-nav .nav-link .far,
.main-header .navbar-nav .nav-link .fab {
    font-size: 16px !important;
    width: 16px !important;
    height: 16px !important;
    line-height: 1 !important;
    vertical-align: middle !important;
    margin-right: 6px !important;
}

.main-header .navbar-nav .nav-link {
    display: flex !important;
    align-items: center !important;
    font-size: 0.875rem !important;
}

/* Search input in header */
.main-header input[type="text"],
.main-header input[type="search"],
.main-header .form-control {
    font-size: 0.875rem !important;
    padding: 8px 12px !important;
    border-radius: var(--radius) !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    background: rgba(255, 255, 255, 0.15) !important;
    color: var(--white) !important;
    transition: all 0.2s ease !important;
}

.main-header input[type="text"]::placeholder,
.main-header input[type="search"]::placeholder {
    color: rgba(255, 255, 255, 0.7) !important;
}

.main-header input[type="text"]:focus,
.main-header input[type="search"]:focus,
.main-header .form-control:focus {
    background: rgba(255, 255, 255, 0.25) !important;
    border-color: rgba(255, 255, 255, 0.5) !important;
    outline: none !important;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1) !important;
}

/* Search button/icon in header */
.main-header .btn-search,
.main-header button[type="submit"],
.main-header .search-submit {
    background: rgba(255, 255, 255, 0.2) !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    color: var(--white) !important;
    padding: 8px 12px !important;
    border-radius: var(--radius) !important;
    font-size: 14px !important;
    transition: all 0.2s ease !important;
}

.main-header .btn-search:hover,
.main-header button[type="submit"]:hover,
.main-header .search-submit:hover {
    background: rgba(255, 255, 255, 0.3) !important;
    transform: translateY(-1px);
}

.main-header .btn-search i,
.main-header .btn-search svg,
.main-header button[type="submit"] i,
.main-header button[type="submit"] svg {
    font-size: 14px !important;
    width: 14px !important;
    height: 14px !important;
}

/* User menu and dropdown icons */
.main-header .dropdown-toggle i,
.main-header .dropdown-toggle svg {
    font-size: 16px !important;
    width: 16px !important;
    height: 16px !important;
    margin-right: 6px !important;
}

/* ============================================
   Sidebar Enhancements
   ============================================ */
.main-sidebar {
    background: linear-gradient(180deg, #1f2937 0%, #111827 100%) !important;
    box-shadow: var(--shadow-lg) !important;
}

.main-sidebar .brand-link {
    background: rgba(255, 255, 255, 0.05) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.main-sidebar .nav-sidebar > .nav-item > .nav-link {
    border-radius: var(--radius);
    margin: 4px 8px;
    padding: 12px 16px !important;
    transition: all 0.2s ease;
    font-weight: 500;
}

.main-sidebar .nav-sidebar > .nav-item > .nav-link:hover {
    background: rgba(102, 126, 234, 0.15) !important;
    transform: translateX(4px);
    border-left: 3px solid var(--primary-color);
}

.main-sidebar .nav-sidebar > .nav-item > .nav-link.active {
    background: var(--primary-gradient) !important;
    box-shadow: var(--shadow-md);
}

.main-sidebar .nav-sidebar .nav-icon {
    margin-right: 12px;
    width: 20px;
    text-align: center;
}

/* ============================================
   Content Area
   ============================================ */
.content-wrapper {
    background: var(--gray-50);
    padding: 24px;
}

.content-header {
    margin-bottom: 24px;
}

.content-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

/* ============================================
   Cards & Modules
   ============================================ */
.card, .module {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: none;
    margin-bottom: 24px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover, .module:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header, .module h2 {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
    padding: 16px 24px !important;
    margin: 0 !important;
    font-weight: 600;
    font-size: 1rem;
    border: none !important;
}

.card-body {
    padding: 24px;
}

/* ============================================
   Tables
   ============================================ */
.table {
    border-radius: var(--radius);
    overflow: hidden;
}

.table thead th {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 16px !important;
    border: none !important;
}

.table tbody tr {
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--gray-200);
}

.table tbody tr:hover {
    background: var(--gray-50) !important;
    transform: scale(1.01);
    box-shadow: var(--shadow-sm);
}

.table tbody td {
    padding: 16px !important;
    vertical-align: middle;
}

/* ============================================
   Forms
   ============================================ */
.form-row {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: all 0.2s ease;
}

.form-row:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.form-row label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="url"],
input[type="date"],
input[type="datetime-local"],
textarea,
select {
    border-radius: var(--radius) !important;
    border: 2px solid var(--gray-200) !important;
    padding: 12px 16px !important;
    font-size: 0.9375rem;
    transition: all 0.2s ease;
    background: var(--white);
    color: var(--gray-800);
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1) !important;
    outline: none !important;
    transform: translateY(-1px);
}

/* ============================================
   Buttons
   ============================================ */
.btn, .button, input[type="submit"], .submit-row input {
    border-radius: var(--radius) !important;
    padding: 12px 24px !important;
    font-weight: 600 !important;
    font-size: 0.875rem !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    border: none !important;
}

.btn:hover, .button:hover, input[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary, .button.default, input[type="submit"].default {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
}

.btn-primary:hover, .button.default:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #6a3f8f 100%) !important;
    box-shadow: var(--shadow-lg);
}

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

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

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

.btn-info {
    background: var(--info-color) !important;
    color: var(--white) !important;
}

/* ============================================
   Dashboard
   ============================================ */
.dashboard .module {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.dashboard .module:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.dashboard .module h2 {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
    padding: 20px 24px !important;
    margin: 0 !important;
    font-weight: 700;
    font-size: 1.125rem;
    border: none !important;
}

.dashboard .module table {
    margin: 0;
}

.dashboard .module table th {
    background: var(--gray-100);
    font-weight: 600;
    padding: 12px 16px;
}

.dashboard .module table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
}

/* ============================================
   Filters & Sidebar
   ============================================ */
#changelist-filter {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--white);
    border: 1px solid var(--gray-200);
}

#changelist-filter h2 {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
    padding: 16px 20px !important;
    margin: 0 !important;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none !important;
}

#changelist-filter h3 {
    background: var(--gray-100);
    padding: 12px 16px;
    margin: 0;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--gray-700);
}

#changelist-filter ul {
    padding: 8px 0;
}

#changelist-filter li {
    padding: 8px 16px;
    transition: all 0.2s ease;
}

#changelist-filter li:hover {
    background: var(--gray-50);
}

#changelist-filter li.selected a {
    color: var(--primary-color);
    font-weight: 600;
}

/* ============================================
   Pagination
   ============================================ */
.paginator {
    margin: 24px 0;
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
}

.paginator a,
.paginator .this-page {
    border-radius: var(--radius);
    padding: 10px 16px;
    margin: 0 2px;
    transition: all 0.2s ease;
    font-weight: 500;
    text-decoration: none;
    border: 2px solid var(--gray-200);
    background: var(--white);
    color: var(--gray-700);
}

.paginator a:hover {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.paginator .this-page {
    background: var(--primary-gradient) !important;
    color: var(--white) !important;
    border-color: var(--primary-color);
    font-weight: 700;
}

/* ============================================
   Messages & Alerts
   ============================================ */
.messagelist {
    margin: 0 0 24px 0;
    padding: 0;
    list-style: none;
}

.messagelist li {
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-md);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.messagelist .success {
    background: var(--success-light);
    border-left: 4px solid var(--success-color);
    color: #065f46;
}

.messagelist .error {
    background: var(--danger-light);
    border-left: 4px solid var(--danger-color);
    color: #991b1b;
}

.messagelist .warning {
    background: var(--warning-light);
    border-left: 4px solid var(--warning-color);
    color: #92400e;
}

.messagelist .info {
    background: var(--info-light);
    border-left: 4px solid var(--info-color);
    color: #1e40af;
}

/* ============================================
   Login Page
   ============================================ */
.login {
    background: var(--primary-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login .form-row {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 100%;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login h1 {
    text-align: center;
    margin-bottom: 32px;
    color: var(--gray-900);
    font-size: 1.75rem;
}

.login .submit-row {
    margin-top: 24px;
}

/* ============================================
   Action Bar
   ============================================ */
.actions {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.actions select {
    border-radius: var(--radius);
    padding: 8px 12px;
    border: 2px solid var(--gray-200);
}

/* ============================================
   Badges
   ============================================ */
.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: var(--success-light);
    color: #065f46;
}

.badge-danger {
    background: var(--danger-light);
    color: #991b1b;
}

.badge-warning {
    background: var(--warning-light);
    color: #92400e;
}

.badge-info {
    background: var(--info-light);
    color: #1e40af;
}

/* ============================================
   Loading Spinner
   ============================================ */
.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(102, 126, 234, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .content-wrapper {
        padding: 16px;
    }
    
    .form-row {
        padding: 16px;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table thead th,
    .table tbody td {
        padding: 12px !important;
    }
}

/* ============================================
   Smooth Transitions
   ============================================ */
* {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}