/**
 * Modern Dark Theme - Google Ads Manager
 * Version: 1.0.0
 *
 * Designed with WCAG AA accessibility standards
 * Optimized for dark mode environments
 * Professional, clean, modern aesthetic
 */

/* =========================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================= */

:root {
    /* === COLOR PALETTE === */

    /* Background Colors - Pro1.pl Theme */
    --bg-primary: #1a1a1a;          /* Main app background */
    --bg-secondary: #2a2a2a;        /* Card/panel backgrounds */
    --bg-tertiary: #333333;         /* Elevated surfaces */
    --bg-quaternary: #383838;       /* Input fields - Pro1.pl header gray */
    --bg-hover: #404040;            /* Hover states */
    --bg-active: #4a4a4a;           /* Active/pressed states */
    --bg-header: #383838;           /* Pro1.pl header color */

    /* Primary Brand Colors - Pro1.pl Lime Green */
    --primary-50: #f9fde7;
    --primary-100: #f0f4c3;
    --primary-200: #e6ee9c;
    --primary-300: #dce775;
    --primary-400: #d4e157;
    --primary-500: #BDCF00;         /* Main primary color - Pro1.pl brand */
    --primary-600: #a8b800;
    --primary-700: #94a100;
    --primary-800: #7f8a00;
    --primary-900: #6b7300;

    /* Success Colors */
    --success-50: #ecfdf5;
    --success-100: #d1fae5;
    --success-500: #10b981;         /* Main success color */
    --success-600: #059669;
    --success-700: #047857;

    /* Warning Colors */
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-500: #f59e0b;         /* Main warning color */
    --warning-600: #d97706;
    --warning-700: #b45309;

    /* Danger Colors */
    --danger-50: #fef2f2;
    --danger-100: #fee2e2;
    --danger-500: #ef4444;          /* Main danger color */
    --danger-600: #dc2626;
    --danger-700: #b91c1c;

    /* Accent Colors */
    --accent-purple-500: #8b5cf6;
    --accent-purple-600: #7c3aed;
    --accent-indigo-500: #6366f1;
    --accent-teal-500: #14b8a6;
    --accent-amber-500: #f59e0b;

    /* Text Colors */
    --text-primary: #f3f4f6;        /* Primary text */
    --text-secondary: #d1d5db;      /* Secondary text */
    --text-tertiary: #9ca3af;       /* Muted text */
    --text-quaternary: #6b7280;     /* Very muted text */
    --text-disabled: #4b5563;       /* Disabled text */
    --text-inverse: #111827;        /* Dark text on light bg */

    /* Border Colors */
    --border-primary: #374151;      /* Main borders */
    --border-secondary: #4b5563;    /* Stronger borders */
    --border-tertiary: #1f2937;     /* Subtle borders */
    --border-focus: #BDCF00;        /* Focus ring - Pro1.pl lime */

    /* Shadow Colors */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);

    /* === TYPOGRAPHY === */

    /* Font Families */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line Heights */
    --leading-tight: 1.2;
    --leading-normal: 1.5;
    --leading-relaxed: 1.75;

    /* === SPACING === */

    --space-1: 0.25rem;      /* 4px */
    --space-2: 0.5rem;       /* 8px */
    --space-3: 0.75rem;      /* 12px */
    --space-4: 1rem;         /* 16px */
    --space-5: 1.25rem;      /* 20px */
    --space-6: 1.5rem;       /* 24px */
    --space-8: 2rem;         /* 32px */
    --space-10: 2.5rem;      /* 40px */
    --space-12: 3rem;        /* 48px */
    --space-16: 4rem;        /* 64px */

    /* === BORDER RADIUS === */

    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.375rem;   /* 6px */
    --radius-lg: 0.5rem;     /* 8px */
    --radius-xl: 0.75rem;    /* 12px */
    --radius-2xl: 1rem;      /* 16px */
    --radius-full: 9999px;   /* Fully rounded */

    /* === TRANSITIONS === */

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* === Z-INDEX LAYERS === */

    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* =========================================
   BASE STYLES
   ========================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* =========================================
   TYPOGRAPHY
   ========================================= */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

a {
    color: var(--primary-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-300);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

code {
    background-color: var(--bg-tertiary);
    color: var(--accent-purple-500);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
}

pre {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    border: 1px solid var(--border-primary);
}

/* =========================================
   TOP NAVIGATION BAR
   ========================================= */

.top-navbar {
    height: 64px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    gap: var(--space-6);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    backdrop-filter: blur(8px);
    background: rgba(20, 24, 36, 0.95);
}

.nav-hamburger {
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    transition: transform var(--transition-base);
}

.nav-hamburger:hover {
    transform: scale(1.05);
}

.nav-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-tertiary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

.nav-hamburger:hover span {
    background: var(--text-primary);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-logo img {
    width: 28px;
    height: 28px;
    filter: brightness(1.2);
}

.nav-logo-text {
    font-size: var(--text-xl);
    color: var(--text-primary);
    font-weight: var(--font-semibold);
    background: linear-gradient(135deg, var(--primary-400), var(--accent-purple-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-product-name {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    padding-left: var(--space-4);
    border-left: 1px solid var(--border-primary);
    font-weight: var(--font-medium);
}

/* === ACCOUNT SELECTOR === */

.nav-account-selector {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.account-selector-btn {
    width: 100%;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 0 var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.account-selector-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-secondary);
}

.account-selector-btn:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.account-selector-btn .account-name {
    flex: 1;
    text-align: left;
    font-weight: var(--font-medium);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.account-selector-btn .dropdown-arrow {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    transition: transform var(--transition-base);
}

.account-selector-btn.open .dropdown-arrow {
    transform: rotate(180deg);
}

/* === ACCOUNT DROPDOWN === */

.account-dropdown {
    position: absolute;
    top: 48px;
    left: 0;
    width: 100%;
    max-width: 500px;
    max-height: 600px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    display: none;
    flex-direction: column;
    animation: dropdown-fade-in var(--transition-base);
}

@keyframes dropdown-fade-in {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.account-dropdown.open {
    display: flex;
}

.dropdown-search {
    padding: var(--space-3);
    border-bottom: 1px solid var(--border-primary);
    background: var(--bg-secondary);
}

.dropdown-search input {
    width: 100%;
    height: 36px;
    padding: 0 var(--space-3);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    background: var(--bg-quaternary);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.dropdown-search input::placeholder {
    color: var(--text-quaternary);
}

.dropdown-search input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.dropdown-tree {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-2) 0;
}

/* Custom Scrollbar */
.dropdown-tree::-webkit-scrollbar {
    width: 8px;
}

.dropdown-tree::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.dropdown-tree::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: var(--radius-full);
}

.dropdown-tree::-webkit-scrollbar-thumb:hover {
    background: var(--text-quaternary);
}

.tree-item {
    padding: var(--space-2) var(--space-4);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.tree-item.mcc {
    background: rgba(59, 130, 246, 0.08);
    color: var(--primary-300);
    font-weight: var(--font-medium);
}

.tree-item.mcc:hover {
    background: rgba(59, 130, 246, 0.15);
}

.tree-item.selected {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-500);
    font-weight: var(--font-medium);
}

.tree-item .expand-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--text-tertiary);
    transition: transform var(--transition-fast);
}

.tree-item .expand-icon.rotated {
    transform: rotate(90deg);
}

.tree-item .expand-icon.empty {
    visibility: hidden;
}

.tree-item .account-icon {
    width: 20px;
    font-size: 16px;
}

.tree-item .account-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tree-item .account-id {
    font-size: var(--text-xs);
    color: var(--text-quaternary);
    font-family: var(--font-mono);
}

.tree-item.level-1 { padding-left: 40px; }
.tree-item.level-2 { padding-left: 64px; }
.tree-item.level-3 { padding-left: 88px; }
.tree-item.level-4 { padding-left: 112px; }

/* === NAV ICONS === */

.nav-icons {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
}

.nav-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--text-tertiary);
    transition: all var(--transition-base);
    position: relative;
}

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

.nav-icon.has-notification::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--danger-500);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-secondary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding-left: var(--space-4);
    border-left: 1px solid var(--border-primary);
}

.nav-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-500), var(--accent-purple-500));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: transform var(--transition-base);
}

.nav-user-avatar:hover {
    transform: scale(1.05);
}

.nav-user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-user-email {
    font-size: var(--text-sm);
    color: var(--text-primary);
    font-weight: var(--font-medium);
}

.nav-user-status {
    font-size: var(--text-xs);
    color: var(--text-quaternary);
}

/* =========================================
   LEFT SIDEBAR
   ========================================= */

.left-sidebar {
    position: fixed;
    top: 64px;
    left: 0;
    width: 72px;
    height: calc(100vh - 64px);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    transition: width var(--transition-slow);
    z-index: var(--z-sticky);
    overflow: hidden;
}

.left-sidebar.expanded {
    width: 240px;
}

.sidebar-item {
    height: 72px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    cursor: pointer;
    color: var(--text-tertiary);
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
    position: relative;
}

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

.sidebar-item.active {
    color: var(--primary-400);
    background: rgba(59, 130, 246, 0.08);
    border-left-color: var(--primary-500);
}

.sidebar-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-500), var(--accent-purple-500));
}

.sidebar-item-icon {
    font-size: 24px;
}

.sidebar-item-label {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
}

/* =========================================
   SECONDARY SIDEBAR (SUBMENU)
   ========================================= */

.secondary-sidebar {
    position: fixed;
    top: 64px;
    left: 72px;
    width: 256px;
    height: calc(100vh - 64px);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    transition: transform var(--transition-slow);
    z-index: calc(var(--z-sticky) - 10);
    overflow-y: auto;
}

.secondary-sidebar.hidden {
    transform: translateX(-256px);
}

.submenu-header {
    padding: var(--space-5) var(--space-6);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-primary);
    background: var(--bg-tertiary);
}

.submenu-item {
    padding: var(--space-3) var(--space-6);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border-left: 3px solid transparent;
}

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

.submenu-item.active {
    background: rgba(59, 130, 246, 0.08);
    color: var(--primary-400);
    font-weight: var(--font-medium);
    border-left-color: var(--primary-500);
}

.submenu-item-icon {
    font-size: 18px;
    width: 20px;
    text-align: center;
}

/* =========================================
   MAIN CONTENT
   ========================================= */

.main-content {
    margin-top: 64px;
    margin-left: 72px;
    padding: var(--space-6);
    min-height: calc(100vh - 64px);
    transition: margin-left var(--transition-slow);
}

.main-content.with-submenu {
    margin-left: 328px;
}

/* === PAGE HEADER === */

.page-header {
    margin-bottom: var(--space-6);
}

.page-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.page-subtitle {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    line-height: var(--leading-relaxed);
}

/* =========================================
   CARDS
   ========================================= */

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-4);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--border-secondary);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-tertiary);
}

.card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
}

.card-body {
    color: var(--text-secondary);
}

.card-footer {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-tertiary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* === CARD VARIANTS === */

.card-primary {
    border-color: var(--primary-500);
    background: rgba(59, 130, 246, 0.05);
}

.card-success {
    border-color: var(--success-500);
    background: rgba(16, 185, 129, 0.05);
}

.card-warning {
    border-color: var(--warning-500);
    background: rgba(245, 158, 11, 0.05);
}

.card-danger {
    border-color: var(--danger-500);
    background: rgba(239, 68, 68, 0.05);
}

/* =========================================
   BUTTONS
   ========================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1.5;
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* === BUTTON SIZES === */

.btn-xs {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
}

.btn-xl {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

/* === BUTTON VARIANTS === */

.btn-primary {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

.btn-primary:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
}

.btn-primary:active {
    background: var(--primary-700);
}

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

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

.btn-success {
    background: var(--success-500);
    color: white;
    border-color: var(--success-500);
}

.btn-success:hover {
    background: var(--success-600);
}

.btn-warning {
    background: var(--warning-500);
    color: var(--text-inverse);
    border-color: var(--warning-500);
}

.btn-warning:hover {
    background: var(--warning-600);
}

.btn-danger {
    background: var(--danger-500);
    color: white;
    border-color: var(--danger-500);
}

.btn-danger:hover {
    background: var(--danger-600);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-400);
    border-color: var(--primary-500);
}

.btn-outline:hover {
    background: rgba(59, 130, 246, 0.1);
}

/* =========================================
   FORMS
   ========================================= */

.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-label-required::after {
    content: '*';
    color: var(--danger-500);
    margin-left: var(--space-1);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-quaternary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--bg-tertiary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-quaternary);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%239ca3af' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right var(--space-2) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: var(--space-8);
}

.form-help {
    display: block;
    font-size: var(--text-xs);
    color: var(--text-quaternary);
    margin-top: var(--space-1);
}

.form-error {
    display: block;
    font-size: var(--text-xs);
    color: var(--danger-500);
    margin-top: var(--space-1);
}

.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger-500);
}

.form-input.is-valid,
.form-textarea.is-valid,
.form-select.is-valid {
    border-color: var(--success-500);
}

/* === CHECKBOX & RADIO === */

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.form-check-input {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.form-check-input:checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

/* =========================================
   TABLES
   ========================================= */

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-primary);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.table thead {
    background: var(--bg-tertiary);
}

.table th {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-primary);
    white-space: nowrap;
}

.table td {
    padding: var(--space-3) var(--space-4);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-tertiary);
}

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

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

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

/* === TABLE VARIANTS === */

.table-striped tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

.table-bordered {
    border: 1px solid var(--border-primary);
}

.table-bordered th,
.table-bordered td {
    border: 1px solid var(--border-tertiary);
}

/* =========================================
   BADGES
   ========================================= */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.badge-primary {
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary-300);
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-500);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning-500);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-500);
}

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

/* =========================================
   ALERTS
   ========================================= */

.alert {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}

.alert-icon {
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.alert-primary {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--primary-500);
    color: var(--primary-300);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-500);
    color: var(--success-500);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning-500);
    color: var(--warning-500);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger-500);
    color: var(--danger-500);
}

/* =========================================
   MODALS
   ========================================= */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: none;
    align-items: center;
    justify-content: center;
    animation: backdrop-fade-in var(--transition-base);
}

@keyframes backdrop-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-backdrop.open {
    display: flex;
}

.modal {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modal-slide-up var(--transition-base);
}

@keyframes modal-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--text-tertiary);
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--space-6);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* =========================================
   TOOLTIPS
   ========================================= */

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    visibility: hidden;
    position: absolute;
    z-index: var(--z-tooltip);
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-quaternary);
    color: var(--text-primary);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    font-size: var(--text-xs);
    white-space: nowrap;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* =========================================
   LOADING STATES
   ========================================= */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-primary);
    border-top-color: var(--primary-500);
    border-radius: var(--radius-full);
    animation: spin 0.6s linear infinite;
}

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

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-hover) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-lg);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* =========================================
   STATISTICS BOX
   ========================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.stat-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.stat-box:hover {
    border-color: var(--border-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    font-weight: var(--font-medium);
}

.stat-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 20px;
}

.stat-icon-primary {
    background: rgba(59, 130, 246, 0.15);
    color: var(--primary-400);
}

.stat-icon-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-500);
}

.stat-icon-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning-500);
}

.stat-icon-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-500);
}

.stat-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.stat-change {
    font-size: var(--text-xs);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.stat-change.positive {
    color: var(--success-500);
}

.stat-change.negative {
    color: var(--danger-500);
}

/* =========================================
   FAVORITE BUTTON
   ========================================= */

.favorite-btn {
    min-width: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-2);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 18px;
    transition: transform var(--transition-fast);
    color: var(--text-quaternary);
}

.favorite-btn:hover {
    transform: scale(1.15);
}

.favorite-btn.is-favorite {
    color: var(--warning-500);
}

/* =========================================
   UTILITY CLASSES
   ========================================= */

/* === DISPLAY === */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

/* === FLEX === */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.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; }
.flex-1 { flex: 1; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* === SPACING === */
.m-0 { margin: 0 !important; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.p-0 { padding: 0 !important; }
.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }

/* === TEXT === */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary { color: var(--text-tertiary) !important; }
.text-success { color: var(--success-500) !important; }
.text-warning { color: var(--warning-500) !important; }
.text-danger { color: var(--danger-500) !important; }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* === BACKGROUNDS === */
.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-tertiary { background: var(--bg-tertiary); }

/* === BORDERS === */
.border { border: 1px solid var(--border-primary); }
.border-top { border-top: 1px solid var(--border-primary); }
.border-bottom { border-bottom: 1px solid var(--border-primary); }
.rounded { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* === CLOAK === */
[x-cloak] {
    display: none !important;
}

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */

@media (max-width: 768px) {
    .top-navbar {
        padding: 0 var(--space-4);
        gap: var(--space-3);
    }

    .nav-product-name,
    .nav-user-info {
        display: none;
    }

    .secondary-sidebar {
        width: 100%;
        left: 0;
    }

    .main-content {
        margin-left: 0;
        padding: var(--space-4);
    }

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

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: var(--text-2xl);
    }

    .card {
        padding: var(--space-4);
    }

    .btn {
        width: 100%;
    }
}

/* =========================================
   PRINT STYLES
   ========================================= */

@media print {
    .top-navbar,
    .left-sidebar,
    .secondary-sidebar {
        display: none;
    }

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

    .card {
        page-break-inside: avoid;
    }
}