@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --is-primary: #0066F5;
    --is-primary-hover: #0052CC;
    --is-primary-active: #0043A8;
    --is-primary-light: #EFF6FF;
    --is-primary-subtle: #DBEAFE;
    
    --is-success: #10B981;
    --is-success-light: #ECFDF5;
    --is-success-border: #A7F3D0;
    
    --is-warning: #F59E0B;
    --is-warning-light: #FFFBEB;
    --is-warning-border: #FDE68A;
    
    --is-danger: #EF4444;
    --is-danger-light: #FEF2F2;
    --is-danger-border: #FECACA;
    
    --is-info: #06B6D4;
    --is-info-light: #ECFEFF;
    --is-info-border: #A5F3FC;

    --is-bg: #F8FAFC;
    --is-surface: #FFFFFF;
    --is-border: #E2E8F0;
    --is-border-light: #F1F5F9;
    
    --is-text-heading: #0F172A;
    --is-text-body: #334155;
    --is-text-muted: #64748B;
    --is-text-subtle: #94A3B8;

    --is-sidebar-w: 260px;
    --is-header-h: 68px;
    --is-radius: 12px;
    --is-radius-lg: 16px;
    --is-radius-sm: 8px;
    
    --is-shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
    --is-shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.06);
    --is-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --is-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
}

/* Base resets */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--is-text-body);
    background-color: var(--is-bg);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--is-text-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    color: var(--is-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}
a:hover {
    color: var(--is-primary-hover);
}

/* Layout Architecture */
.is-app-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* Sidebar */
.is-sidebar {
    width: var(--is-sidebar-w);
    background-color: var(--is-surface);
    border-right: 1px solid var(--is-border);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.is-sidebar-brand {
    height: var(--is-header-h);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--is-border-light);
}

.is-brand-badge {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, #0066F5 0%, #004BC7 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(0, 102, 245, 0.25);
}

.is-brand-name {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--is-text-heading);
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.is-brand-name span {
    color: var(--is-primary);
}

.is-brand-tag {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 6px;
    background-color: var(--is-primary-light);
    color: var(--is-primary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.is-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem 0.85rem;
}

.is-nav-heading {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--is-text-subtle);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.75rem 0.75rem 0.4rem;
}

.is-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.85rem;
    color: var(--is-text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: var(--is-radius-sm);
    margin-bottom: 0.2rem;
    transition: all 0.15s ease;
    position: relative;
}

.is-nav-link:hover {
    color: var(--is-text-heading);
    background-color: var(--is-border-light);
}

.is-nav-link.active {
    color: var(--is-primary);
    background-color: var(--is-primary-light);
    font-weight: 600;
}

.is-nav-link.active::before {
    content: '';
    position: absolute;
    left: -0.85rem;
    top: 50%;
    transform: translateY(-50%);
    height: 20px;
    width: 3.5px;
    background-color: var(--is-primary);
    border-radius: 0 4px 4px 0;
}

.is-nav-icon {
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
}

.is-nav-badge {
    margin-left: auto;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
}

/* User Box in Sidebar */
.is-sidebar-footer {
    padding: 1rem 1rem;
    border-top: 1px solid var(--is-border-light);
    background-color: #FAFCFE;
}

.is-user-snippet {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.is-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, #0066F5 0%, #3B82F6 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.is-user-info {
    overflow: hidden;
    line-height: 1.2;
}

.is-user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--is-text-heading);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.is-user-role {
    font-size: 0.75rem;
    color: var(--is-text-muted);
}

/* Main Content Area */
.is-main {
    flex: 1;
    margin-left: var(--is-sidebar-w);
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 100vh;
    transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Top Navbar */
.is-navbar {
    height: var(--is-header-h);
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--is-border);
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    padding: 0 1.75rem;
    gap: 1rem;
}

.is-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--is-border);
    border-radius: var(--is-radius-sm);
    padding: 0.4rem 0.6rem;
    color: var(--is-text-body);
    cursor: pointer;
}

.is-page-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
    color: var(--is-text-heading);
}

/* App Body Container */
.is-content {
    flex: 1;
    padding: 1.75rem;
    max-width: 1440px;
    width: 100%;
}

/* Clean Cards (iSeller Style) */
.card {
    background-color: var(--is-surface);
    border: 1px solid var(--is-border);
    border-radius: var(--is-radius);
    box-shadow: var(--is-shadow-xs);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: var(--is-shadow-sm);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--is-border-light);
    padding: 1.15rem 1.35rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    color: var(--is-text-heading);
}

.card-body {
    padding: 1.35rem;
}

.card-footer {
    background-color: #FAFCFE;
    border-top: 1px solid var(--is-border-light);
    padding: 1rem 1.35rem;
    border-bottom-left-radius: var(--is-radius) !important;
    border-bottom-right-radius: var(--is-radius) !important;
}

/* KPI Stat Cards */
.is-stat-card {
    border-radius: var(--is-radius);
    border: 1px solid var(--is-border);
    background: var(--is-surface);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

.is-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

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

.is-stat-content {
    flex: 1;
    min-width: 0;
}

.is-stat-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--is-text-muted);
    margin-bottom: 0.25rem;
    display: block;
}

.is-stat-value {
    font-size: 1.625rem;
    font-weight: 800;
    color: var(--is-text-heading);
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.is-stat-sub {
    font-size: 0.75rem;
    color: var(--is-text-subtle);
}

/* Buttons (Modern SaaS) */
.btn {
    font-family: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.55rem 1rem;
    border-radius: var(--is-radius-sm);
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    line-height: 1.4;
}

.btn-primary {
    background-color: var(--is-primary);
    border-color: var(--is-primary);
    color: #ffffff;
    box-shadow: 0 1px 2px rgba(0, 102, 245, 0.2);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--is-primary-hover);
    border-color: var(--is-primary-hover);
    color: #ffffff;
    box-shadow: 0 4px 8px rgba(0, 102, 245, 0.25);
}

.btn-outline-primary {
    color: var(--is-primary);
    border-color: var(--is-border);
    background-color: var(--is-surface);
}

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

.btn-outline-secondary {
    color: var(--is-text-body);
    border-color: var(--is-border);
    background-color: var(--is-surface);
}

.btn-outline-secondary:hover {
    background-color: var(--is-border-light);
    color: var(--is-text-heading);
    border-color: var(--is-text-subtle);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8125rem;
    border-radius: 6px;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 10px;
}

/* Badges */
.badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    letter-spacing: 0.01em;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.badge-subtle-primary {
    background-color: var(--is-primary-light);
    color: var(--is-primary);
    border: 1px solid var(--is-primary-subtle);
}

.badge-subtle-success {
    background-color: var(--is-success-light);
    color: #047857;
    border: 1px solid var(--is-success-border);
}

.badge-subtle-warning {
    background-color: var(--is-warning-light);
    color: #B45309;
    border: 1px solid var(--is-warning-border);
}

.badge-subtle-danger {
    background-color: var(--is-danger-light);
    color: #B91C1C;
    border: 1px solid var(--is-danger-border);
}

.badge-subtle-info {
    background-color: var(--is-info-light);
    color: #0E7490;
    border: 1px solid var(--is-info-border);
}

.badge-subtle-secondary {
    background-color: var(--is-border-light);
    color: var(--is-text-muted);
    border: 1px solid var(--is-border);
}

/* Forms */
.form-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--is-text-heading);
    margin-bottom: 0.4rem;
}

.form-control, .form-select {
    font-size: 0.875rem;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--is-border);
    border-radius: var(--is-radius-sm);
    color: var(--is-text-heading);
    background-color: #ffffff;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--is-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 245, 0.15);
    outline: none;
}

/* Modern Tables (iSeller Style) */
.table {
    margin-bottom: 0;
    color: var(--is-text-body);
}

.table > :not(caption) > * > * {
    padding: 0.95rem 1.15rem;
    background-color: transparent;
    border-bottom: 1px solid var(--is-border-light);
    vertical-align: middle;
}

.table thead th {
    background-color: #F8FAFC;
    color: var(--is-text-muted);
    font-size: 0.725rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--is-border);
    white-space: nowrap;
}

.table-hover tbody tr:hover > * {
    background-color: #F8FAFC;
}

/* Error Inspection Components */
.error-preview-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background-color: var(--is-danger-light);
    color: #DC2626;
    border: 1px solid var(--is-danger-border);
    border-radius: 6px;
    padding: 0.25rem 0.55rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.error-preview-pill:hover {
    background-color: #FEE2E2;
    color: #991B1B;
    transform: translateY(-1px);
}

.error-detail-box {
    background-color: #0F172A;
    color: #F1F5F9;
    border-radius: var(--is-radius-sm);
    padding: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    line-height: 1.5;
    max-height: 280px;
    overflow-y: auto;
    position: relative;
    border: 1px solid #1E293B;
}

.copy-btn {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    font-size: 0.75rem;
    padding: 0.25rem 0.55rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: background 0.15s ease;
}
.copy-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* Code Snippets for API Docs */
.code-window {
    background-color: #0F172A;
    border-radius: var(--is-radius);
    overflow: hidden;
    border: 1px solid #1E293B;
    margin-bottom: 1.25rem;
}

.code-header {
    background-color: #1E293B;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.code-dots {
    display: flex;
    gap: 0.35rem;
}

.code-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.code-dot.red { background-color: #EF4444; }
.code-dot.yellow { background-color: #F59E0B; }
.code-dot.green { background-color: #10B981; }

.code-body {
    padding: 1rem 1.25rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: #E2E8F0;
    line-height: 1.6;
    overflow-x: auto;
    margin: 0;
}

/* Modals */
.modal-content {
    border-radius: var(--is-radius-lg);
    border: 1px solid var(--is-border);
    box-shadow: var(--is-shadow-lg);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--is-border-light);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--is-border-light);
    background-color: #FAFCFE;
    border-bottom-left-radius: var(--is-radius-lg);
    border-bottom-right-radius: var(--is-radius-lg);
}

/* Mobile & Responsive Rules */
@media (max-width: 991.98px) {
    .is-sidebar {
        transform: translateX(-100%);
    }

    .is-sidebar.show {
        transform: translateX(0);
        box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
    }

    .is-main {
        margin-left: 0 !important;
    }

    .is-menu-toggle {
        display: inline-flex;
    }

    .is-content {
        padding: 1rem;
    }
    
    .is-sidebar-backdrop {
        position: fixed;
        inset: 0;
        background-color: rgba(15, 23, 42, 0.4);
        backdrop-filter: blur(2px);
        z-index: 1030;
        display: none;
    }
    
    .is-sidebar-backdrop.show {
        display: block;
    }
}