/* ==========================================================================
   HELPDESK SYSTEM — Enterprise Design System
   A modern, professional CSS design system with dark/light theme support
   ========================================================================== */

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

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */
:root {
    /* ── Typography ── */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --text-xs: 0.75rem;
    --text-sm: 0.8125rem;
    --text-base: 0.875rem;
    --text-lg: 1rem;
    --text-xl: 1.125rem;
    --text-2xl: 1.375rem;
    --text-3xl: 1.75rem;
    --text-4xl: 2.25rem;

    /* ── Spacing ── */
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* ── Border Radius ── */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* ── Shadows ── */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);

    /* ── Transitions ── */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* ── Layout ── */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 68px;
    --navbar-height: 56px;
}

/* ==========================================================================
   DARK THEME (Default)
   ========================================================================== */
[data-theme="dark"] {
    --bg-body: #0f1117;
    --bg-surface: #161922;
    --bg-surface-raised: #1c2030;
    --bg-surface-overlay: #232839;
    --bg-hover: rgba(255, 255, 255, 0.04);
    --bg-active: rgba(255, 255, 255, 0.08);
    --bg-input: #1c2030;
    --bg-sidebar: #0d0f15;

    --border-primary: rgba(255, 255, 255, 0.08);
    --border-secondary: rgba(255, 255, 255, 0.05);
    --border-focus: #6366f1;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --text-inverse: #0f172a;

    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-secondary: #8b5cf6;

    /* ── Status Colors (Dark) ── */
    --status-open-bg: rgba(59, 130, 246, 0.12);
    --status-open-text: #60a5fa;
    --status-open-border: rgba(59, 130, 246, 0.3);

    --status-acknowledged-bg: rgba(245, 158, 11, 0.12);
    --status-acknowledged-text: #fbbf24;
    --status-acknowledged-border: rgba(245, 158, 11, 0.3);

    --status-assigned-bg: rgba(139, 92, 246, 0.12);
    --status-assigned-text: #a78bfa;
    --status-assigned-border: rgba(139, 92, 246, 0.3);

    --status-inprogress-bg: rgba(99, 102, 241, 0.12);
    --status-inprogress-text: #818cf8;
    --status-inprogress-border: rgba(99, 102, 241, 0.3);

    --status-resolved-bg: rgba(34, 197, 94, 0.12);
    --status-resolved-text: #4ade80;
    --status-resolved-border: rgba(34, 197, 94, 0.3);

    --status-closed-bg: rgba(100, 116, 139, 0.12);
    --status-closed-text: #94a3b8;
    --status-closed-border: rgba(100, 116, 139, 0.3);

    --status-breach-bg: rgba(239, 68, 68, 0.12);
    --status-breach-text: #f87171;
    --status-breach-border: rgba(239, 68, 68, 0.3);

    /* ── Priority Colors (Dark) ── */
    --priority-low-bg: rgba(100, 116, 139, 0.12);
    --priority-low-text: #94a3b8;
    --priority-medium-bg: rgba(59, 130, 246, 0.12);
    --priority-medium-text: #60a5fa;
    --priority-high-bg: rgba(245, 158, 11, 0.12);
    --priority-high-text: #fbbf24;
    --priority-critical-bg: rgba(239, 68, 68, 0.12);
    --priority-critical-text: #f87171;

    --scrollbar-track: #161922;
    --scrollbar-thumb: #2d3348;
}

/* ==========================================================================
   LIGHT THEME
   ========================================================================== */
[data-theme="light"] {
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-raised: #f1f5f9;
    --bg-surface-overlay: #e2e8f0;
    --bg-hover: rgba(0, 0, 0, 0.03);
    --bg-active: rgba(0, 0, 0, 0.06);
    --bg-input: #ffffff;
    --bg-sidebar: #ffffff;

    --border-primary: rgba(0, 0, 0, 0.1);
    --border-secondary: rgba(0, 0, 0, 0.06);
    --border-focus: #6366f1;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-inverse: #f8fafc;

    --accent-primary: #6366f1;
    --accent-primary-hover: #4f46e5;
    --accent-secondary: #7c3aed;

    --status-open-bg: rgba(59, 130, 246, 0.08);
    --status-open-text: #2563eb;
    --status-open-border: rgba(59, 130, 246, 0.25);

    --status-acknowledged-bg: rgba(245, 158, 11, 0.08);
    --status-acknowledged-text: #d97706;
    --status-acknowledged-border: rgba(245, 158, 11, 0.25);

    --status-assigned-bg: rgba(139, 92, 246, 0.08);
    --status-assigned-text: #7c3aed;
    --status-assigned-border: rgba(139, 92, 246, 0.25);

    --status-inprogress-bg: rgba(99, 102, 241, 0.08);
    --status-inprogress-text: #4f46e5;
    --status-inprogress-border: rgba(99, 102, 241, 0.25);

    --status-resolved-bg: rgba(34, 197, 94, 0.08);
    --status-resolved-text: #16a34a;
    --status-resolved-border: rgba(34, 197, 94, 0.25);

    --status-closed-bg: rgba(100, 116, 139, 0.08);
    --status-closed-text: #475569;
    --status-closed-border: rgba(100, 116, 139, 0.25);

    --status-breach-bg: rgba(239, 68, 68, 0.08);
    --status-breach-text: #dc2626;
    --status-breach-border: rgba(239, 68, 68, 0.25);

    --priority-low-bg: rgba(100, 116, 139, 0.08);
    --priority-low-text: #475569;
    --priority-medium-bg: rgba(59, 130, 246, 0.08);
    --priority-medium-text: #2563eb;
    --priority-high-bg: rgba(245, 158, 11, 0.08);
    --priority-high-text: #d97706;
    --priority-critical-bg: rgba(239, 68, 68, 0.08);
    --priority-critical-text: #dc2626;

    --scrollbar-track: #f1f5f9;
    --scrollbar-thumb: #cbd5e1;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
}

/* ==========================================================================
   GLOBAL RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    color: var(--text-primary);
    background: var(--bg-body);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--accent-primary); }

/* ==========================================================================
   LAYOUT: APP SHELL
   ========================================================================== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0;
    transition: margin-left var(--transition-base);
}

.app-main.sidebar-collapsed {
    margin-left: var(--sidebar-collapsed-width);
}

.app-content {
    flex: 1;
    padding: var(--space-6) var(--space-8);
    max-width: 1440px;
    width: 100%;
}

/* ==========================================================================
   SIDEBAR
   ========================================================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width var(--transition-base);
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--navbar-height);
}

.sidebar-logo {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.sidebar-brand {
    font-weight: 700;
    font-size: var(--text-base);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-brand,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed .sidebar-link-text,
.sidebar.collapsed .sidebar-badge {
    display: none;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-3) var(--space-2);
}

.sidebar-section {
    margin-bottom: var(--space-2);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    padding: var(--space-3) var(--space-3) var(--space-2) var(--space-3);
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    border-radius: var(--radius-md);
    transition: color var(--transition-fast);
}

.sidebar-section-title:hover {
    color: var(--text-secondary);
}

.sidebar-section-title .nav-chevron {
    flex-shrink: 0;
    transition: transform 0.22s ease;
    opacity: 0.6;
}

.sidebar-section.nav-collapsed > .sidebar-section-title .nav-chevron {
    transform: rotate(-90deg);
}

.sidebar-section-body {
    overflow: hidden;
    max-height: 600px;
    opacity: 1;
    transition: max-height 0.25s ease, opacity 0.2s ease;
}

.sidebar-section.nav-collapsed > .sidebar-section-body {
    max-height: 0;
    opacity: 0;
}

.sidebar.collapsed .nav-chevron {
    display: none;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

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

.sidebar-link.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--accent-primary);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.sidebar-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.7;
}

.sidebar-link.active .sidebar-icon {
    opacity: 1;
}

.sidebar-badge {
    margin-left: auto;
    background: var(--status-breach-bg);
    color: var(--status-breach-text);
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 1px 7px;
    border-radius: var(--radius-full);
}

.sidebar-footer {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--border-primary);
}

.sidebar-toggle {
    width: 100%;
    background: none;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

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

/* ==========================================================================
   NAVBAR (Top Bar)
   ========================================================================== */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-8);
    height: var(--navbar-height);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: 50;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.navbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-tertiary);
}

.navbar-breadcrumb a {
    color: var(--text-tertiary);
}

.navbar-breadcrumb a:hover {
    color: var(--text-primary);
}

.navbar-breadcrumb .separator {
    font-size: var(--text-xs);
}

.navbar-breadcrumb .current {
    color: var(--text-primary);
    font-weight: 500;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.navbar-search {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--space-1) var(--space-3);
    gap: var(--space-2);
    width: 240px;
    transition: all var(--transition-fast);
}

.navbar-search:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.navbar-search input {
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: var(--text-sm);
    outline: none;
    width: 100%;
    font-family: var(--font-family);
}

.navbar-search input::placeholder {
    color: var(--text-tertiary);
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: inline; }
[data-theme="light"] .icon-sun { display: inline; }
[data-theme="light"] .icon-moon { display: none; }

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.navbar-user:hover {
    background: var(--bg-hover);
}

.navbar-user-info {
    display: flex;
    flex-direction: column;
}

.navbar-user-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.navbar-user-role {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    line-height: 1.3;
}

/* ==========================================================================
   AVATAR
   ========================================================================== */
.avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: var(--text-xs);
    flex-shrink: 0;
}

.avatar-sm { width: 28px; height: 28px; font-size: 10px; }
.avatar-lg { width: 44px; height: 44px; font-size: var(--text-base); }

/* Mobile hamburger button — hidden on desktop */
.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    flex-shrink: 0;
    margin-right: var(--space-2);
}
.mobile-menu-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

/* Sidebar overlay — covers content when sidebar is open on mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 199;
}
.sidebar-overlay.active { display: block; }

/* ==========================================================================
   PAGE HEADER
   ========================================================================== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    gap: var(--space-4);
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    min-width: 0;
    flex: 1 1 auto;
}

.page-header p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-1);
}

.page-actions {
    display: flex;
    gap: var(--space-2);
    flex-shrink: 0;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1.5;
}

.btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

.btn-primary:hover {
    background: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

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

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

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

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

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: #ef4444;
    color: #fff;
}

.btn-success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border-color: rgba(34, 197, 94, 0.2);
}

.btn-success:hover {
    background: #22c55e;
    color: #fff;
}

.btn-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.2);
}

.btn-warning:hover {
    background: #f59e0b;
    color: #fff;
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
}

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

.btn-icon {
    width: 34px;
    height: 34px;
    padding: 0;
}

/* ==========================================================================
   CARDS
   ========================================================================== */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
}

.card-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.card-header h2 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: var(--space-5);
}

.card-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-secondary);
}

/* ==========================================================================
   KPI CARDS (Dashboard)
   ========================================================================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.kpi-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

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

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.kpi-card.kpi-open::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.kpi-card.kpi-acknowledged::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.kpi-card.kpi-inprogress::before { background: linear-gradient(90deg, #6366f1, #818cf8); }
.kpi-card.kpi-resolved::before { background: linear-gradient(90deg, #22c55e, #4ade80); }
.kpi-card.kpi-closed::before { background: linear-gradient(90deg, #64748b, #94a3b8); }
.kpi-card.kpi-cancelled::before { background: linear-gradient(90deg, #ef4444, #f87171); }
.kpi-card.kpi-breached::before { background: linear-gradient(90deg, #7c3aed, #a78bfa); }

.kpi-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-2);
}

.kpi-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.kpi-icon {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    opacity: 0.6;
}

/* ==========================================================================
   STATUS BADGES
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid transparent;
}

.badge-open { background: var(--status-open-bg); color: var(--status-open-text); border-color: var(--status-open-border); }
.badge-acknowledged { background: var(--status-acknowledged-bg); color: var(--status-acknowledged-text); border-color: var(--status-acknowledged-border); }
.badge-assigned { background: var(--status-assigned-bg); color: var(--status-assigned-text); border-color: var(--status-assigned-border); }
.badge-in_progress, .badge-inprogress { background: var(--status-inprogress-bg); color: var(--status-inprogress-text); border-color: var(--status-inprogress-border); }
.badge-resolved { background: var(--status-resolved-bg); color: var(--status-resolved-text); border-color: var(--status-resolved-border); }
.badge-closed { background: var(--status-closed-bg); color: var(--status-closed-text); border-color: var(--status-closed-border); }
.badge-reopened { background: var(--status-acknowledged-bg); color: var(--status-acknowledged-text); border-color: var(--status-acknowledged-border); }
.badge-cancelled { background: #fee2e2; color: #991b1b; border-color: #fca5a5; }
.badge-breach { background: var(--status-breach-bg); color: var(--status-breach-text); border-color: var(--status-breach-border); }
.badge-info { background: rgba(59,130,246,.15); color: #3b82f6; border-color: rgba(59,130,246,.3); }

/* Priority Badges */
.badge-low { background: var(--priority-low-bg); color: var(--priority-low-text); }
.badge-medium { background: var(--priority-medium-bg); color: var(--priority-medium-text); }
.badge-high { background: var(--priority-high-bg); color: var(--priority-high-text); }
.badge-critical { background: var(--priority-critical-bg); color: var(--priority-critical-text); }

/* ==========================================================================
   FORMS
   ========================================================================== */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.form-control {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-sm);
    font-family: var(--font-family);
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

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

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-primary);
}

.form-error {
    color: #ef4444;
    font-size: var(--text-xs);
    margin-top: var(--space-1);
}

/* ==========================================================================
   DATA TABLES
   ========================================================================== */
.table-container {
    overflow-x: auto;
}

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

.data-table th {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    padding: var(--space-3) var(--space-4);
    text-align: left;
    background: var(--bg-surface-raised);
    border-bottom: 1px solid var(--border-primary);
    white-space: nowrap;
}

.data-table td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-secondary);
    font-size: var(--text-sm);
    color: var(--text-primary);
    vertical-align: middle;
}

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

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

.data-table tbody tr.row-sender-priority {
    background: rgba(245, 158, 11, 0.12);
    box-shadow: inset 3px 0 0 #f59e0b;
}

.data-table tbody tr.row-sender-priority:hover {
    background: rgba(245, 158, 11, 0.2);
}

.data-table tbody tr.row-priority-gated {
    opacity: 0.72;
}

.data-table .text-muted {
    color: var(--text-tertiary);
    font-size: var(--text-xs);
}

.table-actions {
    display: flex;
    gap: var(--space-1);
}

/* ── Pagination ── */
.pagination-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.pagination {
    display: flex;
    gap: var(--space-1);
    list-style: none;
}

.pagination li a,
.pagination li span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--space-2);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    background: var(--bg-surface);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.pagination li a:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.pagination li.active span {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}

.pagination li.disabled span {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ==========================================================================
   MODAL
   ========================================================================== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
}

.modal-overlay.active {
    display: flex;
    animation: fadeIn var(--transition-fast);
}

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transition-base);
}

.modal-lg { max-width: 720px; }

.modal-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--space-5);
}

.modal-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-secondary);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(16px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ==========================================================================
   TICKET TIMELINE
   ========================================================================== */
.timeline {
    position: relative;
    padding-left: var(--space-6);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-primary);
}

.timeline-entry {
    position: relative;
    padding-bottom: var(--space-5);
}

.timeline-entry:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: calc(-1 * var(--space-6) + 4px);
    top: 4px;
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    border: 2px solid var(--accent-primary);
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
}

.timeline-content {
    background: var(--bg-surface-raised);
    border: 1px solid var(--border-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
}

.timeline-content .action-text {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.timeline-content .action-desc {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
}

.timeline-content .action-meta {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
    display: flex;
    gap: var(--space-3);
}

/* ==========================================================================
   SLA INDICATOR
   ========================================================================== */
.sla-indicator {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.sla-bar {
    height: 6px;
    background: var(--bg-surface-raised);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.sla-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.sla-bar-fill.sla-safe { background: linear-gradient(90deg, #22c55e, #4ade80); }
.sla-bar-fill.sla-warning { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.sla-bar-fill.sla-danger { background: linear-gradient(90deg, #ef4444, #f87171); }

.sla-text {
    font-size: var(--text-xs);
    font-weight: 500;
}

.sla-text.sla-safe { color: #4ade80; }
.sla-text.sla-warning { color: #fbbf24; }
.sla-text.sla-danger { color: #f87171; }

/* ==========================================================================
   ALERTS
   ========================================================================== */
.alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.alert-success {
    background: var(--status-resolved-bg);
    color: var(--status-resolved-text);
    border-color: var(--status-resolved-border);
}

.alert-error {
    background: var(--status-breach-bg);
    color: var(--status-breach-text);
    border-color: var(--status-breach-border);
}

.alert-warning {
    background: var(--status-acknowledged-bg);
    color: var(--status-acknowledged-text);
    border-color: var(--status-acknowledged-border);
}

.alert-info {
    background: var(--status-open-bg);
    color: var(--status-open-text);
    border-color: var(--status-open-border);
}

/* ==========================================================================
   TABS
   ========================================================================== */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-primary);
    margin-bottom: var(--space-5);
}

.tab {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-tertiary);
    border: none;
    background: none;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.tab:hover {
    color: var(--text-primary);
}

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

/* ==========================================================================
   EMPTY STATE
   ========================================================================== */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--text-tertiary);
}

.empty-state-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.empty-state p {
    font-size: var(--text-sm);
    max-width: 360px;
    margin: 0 auto var(--space-5);
}

/* ==========================================================================
   TICKET DETAIL SIDEBAR (Info Panel)
   ========================================================================== */
.ticket-detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-6);
}

.info-panel .info-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--border-secondary);
}

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

.info-panel .info-label {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.info-panel .info-value {
    font-size: var(--text-sm);
    color: var(--text-primary);
    font-weight: 500;
}

/* ==========================================================================
   FILTER BAR
   ========================================================================== */
.filter-bar {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
    align-items: center;
}

.filter-bar .form-control {
    width: auto;
    min-width: 160px;
}

.filter-bar .search-input {
    flex: 1;
    min-width: 200px;
    max-width: 320px;
}

/* ==========================================================================
   STATS GRID (for reports)
   ========================================================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.stat-card h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.stat-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
}

.stat-row .label { color: var(--text-secondary); }
.stat-row .value { font-weight: 600; color: var(--text-primary); }

/* ── Aging Bar ── */
.aging-bar {
    display: flex;
    gap: var(--space-2);
    align-items: flex-end;
    height: 80px;
    margin-top: var(--space-3);
}

.aging-bar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.aging-bar-fill {
    width: 100%;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    min-height: 4px;
    transition: height var(--transition-slow);
}

.aging-bar-label {
    font-size: 9px;
    color: var(--text-tertiary);
    text-align: center;
    white-space: nowrap;
}

.aging-bar-value {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--text-primary);
}

/* ==========================================================================
   LOGIN PAGE
   ========================================================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-body);
    padding: var(--space-6);
}

.login-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
    justify-content: center;
}

.login-logo .sidebar-logo {
    width: 44px;
    height: 44px;
    font-size: var(--text-xl);
}

.login-logo h1 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.login-actions {
    margin-top: var(--space-6);
}

.login-actions .btn {
    width: 100%;
}

.login-footer {
    margin-top: var(--space-6);
    text-align: center;
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1366px) {
    /* Tighter content padding so more table columns fit */
    .app-content {
        padding: var(--space-6) var(--space-4);
    }

    /* Compact table cells — saves ~8px/side per column */
    .data-table th,
    .data-table td {
        padding: var(--space-2) var(--space-3);
    }

    /* Allow header text to wrap so column width is driven by data, not header label */
    .data-table th {
        white-space: normal;
    }
}

@media (max-width: 1024px) {
    .ticket-detail-layout {
        grid-template-columns: 1fr;
    }

    .kpi-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 200;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .navbar-user-info {
        display: none;
    }

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

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

    .navbar {
        padding: 0 var(--space-4);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-actions {
        flex-wrap: wrap;
        width: 100%;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-bar {
        flex-direction: column;
    }

    .filter-bar .form-control,
    .filter-bar .search-input {
        width: 100%;
        max-width: none;
    }

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

    .ticket-detail-layout {
        grid-template-columns: 1fr;
    }

    .pagination-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .app-content {
        padding: var(--space-3);
    }

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

    .card-footer {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .card-footer .btn {
        flex: 1;
        justify-content: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .page-header h1 {
        font-size: var(--text-xl);
    }

    .page-actions .btn {
        flex: 1 1 auto;
        text-align: center;
        justify-content: center;
    }

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

    .modal-overlay {
        padding: var(--space-2);
        align-items: flex-end;
    }

    .modal {
        max-width: 100%;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
        max-height: 85vh;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--space-4);
    }

    .modal-footer {
        flex-wrap: wrap;
    }

    .modal-footer .btn {
        flex: 1;
        justify-content: center;
    }

    .btn {
        white-space: normal;
    }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        flex-wrap: nowrap;
    }

    .tab {
        white-space: nowrap;
        flex-shrink: 0;
    }

    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }

    .pagination-wrapper {
        gap: var(--space-2);
    }

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

    .login-card {
        padding: var(--space-6);
    }
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-muted { color: var(--text-tertiary); }
.text-right { text-align: right; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }