/* ================================================
   MerchantPro - Global Styles
   Purple Gradient Theme
   ================================================ */

/* CSS Variables */
:root {
    --primary: #667eea;
    --primary-dark: #764ba2;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hover: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);

    --text-primary: #374151;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;

    --bg-light: #f9fafb;
    --bg-gray: #f3f4f6;
    --bg-white: #ffffff;

    --border-light: #e5e7eb;
    --border-medium: #d1d5db;

    --success: #10b981;
    --success-bg: #d1fae5;
    --error: #ef4444;
    --error-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --info: #3b82f6;
    --info-bg: #dbeafe;

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

    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --sidebar-width: 260px;
    --header-height: 64px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

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; }

/* ================================================
   Layout - Dashboard
   ================================================ */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-white);
    border-right: 1px solid var(--border-light);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    background: var(--gradient);
    color: white;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-logo i {
    font-size: 1.5rem;
}

.sidebar-user {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.sidebar-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.sidebar-user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.sidebar-user-role {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Sidebar Navigation */
.sidebar-nav {
    padding: 16px 0;
}

.nav-section {
    margin-bottom: 8px;
}

.nav-section-title {
    padding: 8px 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

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

.nav-item.active {
    background: #eef2ff;
    color: var(--primary);
    border-left-color: var(--primary);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.nav-item .badge {
    margin-left: auto;
    background: var(--error);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
}

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

/* Header */
.main-header {
    height: var(--header-height);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--bg-gray);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.2s;
}

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

.header-btn .badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--error);
    color: white;
    font-size: 0.65rem;
    font-weight: 600;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Content Area */
.content-area {
    padding: 24px;
}

/* ================================================
   Components
   ================================================ */

/* Cards */
.card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

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

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

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-light);
    background: var(--bg-light);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-icon.purple {
    background: #ede9fe;
    color: #7c3aed;
}

.stat-icon.blue {
    background: #dbeafe;
    color: #2563eb;
}

.stat-icon.green {
    background: #d1fae5;
    color: #059669;
}

.stat-icon.orange {
    background: #ffedd5;
    color: #ea580c;
}

.stat-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--gradient-hover);
    opacity: 0.9;
    color: white;
}

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

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

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

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

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

.btn-outline:hover {
    background: var(--bg-gray);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

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

.btn-block {
    width: 100%;
}

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

/* Forms */
.form-group {
    margin-bottom: 16px;
}

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

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.9rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius);
    background: var(--bg-white);
    transition: border-color 0.2s;
}

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

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

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

.form-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 4px;
}

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

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

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

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-icon .form-control {
    padding-left: 44px;
}

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

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

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    background: var(--bg-light);
}

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

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 20px;
}

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

.badge-error {
    background: var(--error-bg);
    color: #991b1b;
}

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

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

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

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert-success {
    background: var(--success-bg);
    color: #065f46;
}

.alert-error {
    background: var(--error-bg);
    color: #991b1b;
}

.alert-warning {
    background: var(--warning-bg);
    color: #92400e;
}

.alert-info {
    background: var(--info-bg);
    color: #1e40af;
}

.alert i {
    margin-top: 2px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

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

.modal {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s;
}

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

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

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--bg-gray);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.modal-close:hover {
    background: var(--border-light);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

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

.page-btn {
    min-width: 36px;
    height: 36px;
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    background: var(--bg-white);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.page-btn:hover {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.page-btn.active {
    background: var(--gradient);
    color: white;
    border-color: transparent;
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-gray);
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.2s;
    color: var(--text-primary);
}

.lang-btn:hover {
    background: var(--border-light);
}

/* For lang switcher in gradient/dark headers */
.store-header .lang-btn,
.header-actions .lang-btn,
[style*="gradient"] .lang-btn,
.gradient-header .lang-btn,
.lang-btn.lang-btn-light {
    background: rgba(255, 255, 255, 0.2) !important;
    color: #ffffff !important;
}

.store-header .lang-btn:hover,
.header-actions .lang-btn:hover,
[style*="gradient"] .lang-btn:hover,
.gradient-header .lang-btn:hover,
.lang-btn.lang-btn-light:hover {
    background: rgba(255, 255, 255, 0.3) !important;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: #ffffff !important;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s;
    z-index: 1000;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: 10px 16px;
    color: #1f2937 !important;
    font-size: 0.875rem;
    transition: background 0.2s;
    text-decoration: none;
    background: #ffffff;
}

.lang-option:hover {
    background: var(--bg-light);
}

.lang-option.active {
    background: #eef2ff;
    color: var(--primary);
}

/* Currency Switcher */
.currency-switcher {
    position: relative;
}

.currency-select {
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius);
    font-size: 0.875rem;
    cursor: pointer;
    color: #ffffff;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-right: 28px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
}

.currency-select:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.currency-select:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
}

.currency-select option {
    background: #ffffff;
    color: #1f2937;
}

/* Dark mode currency select for admin/merchant panels */
.main-header .currency-select,
.sidebar .currency-select {
    background-color: var(--bg-gray);
    border-color: var(--border-light);
    color: var(--text-primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

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

.empty-state i {
    font-size: 4rem;
    color: var(--border-medium);
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

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

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

@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;
}

/* ================================================
   Auth Pages
   ================================================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    padding: 20px;
}

.auth-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 420px;
    padding: 40px;
}

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

.auth-logo {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.auth-footer a {
    font-weight: 500;
}

/* ================================================
   Responsive
   ================================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
    }

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

@media (max-width: 768px) {
    .stat-cards {
        grid-template-columns: 1fr;
    }

    .content-area {
        padding: 16px;
    }

    .auth-card {
        padding: 24px;
    }

    .card-body {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .main-header {
        padding: 0 16px;
    }

    .header-right {
        gap: 8px;
    }

    .btn {
        padding: 8px 16px;
    }
}

/* ================================================
   Utilities
   ================================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.w-100 { width: 100%; }
.hidden { display: none !important; }