/* GTD Task Manager - Main Styles */
/* Design System: Dark Theme with Vibrant Accents */

:root {
    /* Colors */
    --color-bg-primary: #0f0f12;
    --color-bg-secondary: #16161a;
    --color-bg-tertiary: #1e1e24;
    --color-bg-elevated: #242429;
    --color-bg-hover: #2a2a32;

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);

    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a8;
    --color-text-tertiary: #6b6b73;
    --color-text-muted: #4a4a52;

    /* Brand Colors */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-primary-bg: rgba(99, 102, 241, 0.1);

    --color-secondary: #8b5cf6;
    --color-accent: #ec4899;

    /* Status Colors */
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.1);
    --color-info: #3b82f6;
    --color-info-bg: rgba(59, 130, 246, 0.1);

    /* Priority Colors */
    --color-priority-low: #6b7280;
    --color-priority-normal: #3b82f6;
    --color-priority-high: #f59e0b;
    --color-priority-urgent: #ef4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 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, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Typography - Enhanced */
    --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.05em;

    /* Layout */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 64px;
    --header-height: 64px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;

    /* Extra font sizes */
    --font-size-md: 1rem;

    /* Extra colors */
    --color-danger: #ef4444;
}

/* Light Theme */
[data-theme="light"] {
    --color-bg-primary: #f8fafc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f1f5f9;
    --color-bg-elevated: #ffffff;
    --color-bg-hover: #e2e8f0;

    --color-border: rgba(0, 0, 0, 0.08);
    --color-border-light: rgba(0, 0, 0, 0.12);

    --color-text-primary: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-tertiary: #94a3b8;
    --color-text-muted: #cbd5e1;

    /* Shadows for light theme */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    overflow-x: hidden;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    font-weight: 600;
}

code,
pre,
kbd {
    font-family: var(--font-mono);
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

::selection {
    background: var(--color-primary);
    color: white;
}

.hidden {
    display: none !important;
}

/* === LOADING SCREEN === */
.loading-screen {
    position: fixed;
    inset: 0;
    background: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-content {
    text-align: center;
}

.loading-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.loading-logo .logo-icon svg {
    width: 64px;
    height: 64px;
    animation: pulse 2s ease-in-out infinite;
}

.loading-logo h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(0.95);
    }
}

/* === AUTH CONTAINER === */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    position: relative;
}

.auth-background {
    position: fixed;
    inset: 0;
    overflow: hidden;
}

.auth-gradient {
    position: absolute;
    width: 150%;
    height: 150%;
    top: -25%;
    left: -25%;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(236, 72, 153, 0.08) 0%, transparent 70%);
    animation: gradientMove 20s ease-in-out infinite;
}

@keyframes gradientMove {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(2%, -2%) rotate(1deg);
    }

    66% {
        transform: translate(-2%, 2%) rotate(-1deg);
    }
}

.auth-card {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--color-bg-secondary);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-xl);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.auth-logo svg {
    width: 56px;
    height: 56px;
    margin-bottom: var(--space-md);
}

.auth-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.auth-header p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

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

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: var(--space-md);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-lg);
}

.input-wrapper input {
    padding-left: 2.75rem;
}

.input-wrapper .toggle-password {
    position: absolute;
    right: var(--space-sm);
    padding: var(--space-sm);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.input-wrapper .toggle-password:hover {
    color: var(--color-text-secondary);
}

input,
textarea,
select {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-tertiary);
}

.password-strength {
    height: 3px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    margin-top: var(--space-sm);
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0;
    background: var(--color-error);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.auth-switch {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

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

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background: var(--color-bg-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

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

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

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

.btn-block {
    width: 100%;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

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

.btn-icon-sm {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
}

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

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

/* === SIDEBAR === */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-base), width var(--transition-base);
}

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

.sidebar.collapsed .sidebar-content,
.sidebar.collapsed .sidebar-footer {
    overflow: hidden;
}

.sidebar.collapsed span,
.sidebar.collapsed .nav-section-header,
.sidebar.collapsed kbd {
    opacity: 0;
    visibility: hidden;
}

/* Keep toggle button visible and centered when collapsed */
.sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: var(--space-md) var(--space-sm);
}

.sidebar.collapsed .logo {
    display: none;
}

.sidebar.collapsed #toggle-sidebar {
    opacity: 1;
    visibility: visible;
    transform: rotate(180deg);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    height: var(--header-height);
    border-bottom: 1px solid var(--color-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary-light);
}

.logo svg {
    width: 32px;
    height: 32px;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
}

.quick-capture-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-md);
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: white;
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-lg);
}

.quick-capture-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.quick-capture-btn kbd {
    margin-left: auto;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.nav-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 10px var(--space-md);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    border-radius: 0 2px 2px 0;
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.nav-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
    transform: translateX(4px);
}

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

.nav-item.active::before {
    transform: scaleY(1);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: var(--font-size-lg);
}

.nav-item .badge {
    margin-left: auto;
    padding: 2px 8px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.nav-item .badge.warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.nav-items-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 200px;
    overflow-y: auto;
}

.nav-items-list .nav-item {
    padding-left: var(--space-lg);
}

.nav-items-list .nav-item::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--item-color, var(--color-text-tertiary));
}

.sidebar-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* === MAIN CONTENT === */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-base);
}

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

/* === HEADER === */
.main-header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--color-bg-secondary);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
    z-index: 50;
}

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

.header-left h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.header-center {
    flex: 1;
    max-width: 500px;
    margin: 0 var(--space-xl);
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
}

.search-container i {
    position: absolute;
    left: var(--space-md);
    color: var(--color-text-tertiary);
}

.search-container input {
    padding-left: 2.5rem;
    padding-right: 3rem;
    background: var(--color-bg-secondary);
}

.search-container kbd {
    position: absolute;
    right: var(--space-md);
    padding: 2px 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.notification-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--color-error);
    border-radius: 50%;
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

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

.user-dropdown {
    position: absolute;
    top: calc(100% + var(--space-sm));
    right: 0;
    min-width: 220px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--space-sm);
    z-index: 100;
}

.user-info {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
}

.user-info #user-name {
    font-weight: 600;
}

.user-info #user-email {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-sm) 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    width: 100%;
    text-align: left;
}

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

.dropdown-item.danger:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

/* === CONTENT AREA === */
.content-area {
    flex: 1;
    padding: var(--space-xl);
    overflow-y: auto;
}

/* === MODALS === */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-lg);
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    animation: modalEnter 200ms ease-out;
}

@keyframes modalEnter {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-header h2 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

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

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

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.modal-footer .hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.modal-footer kbd {
    padding: 2px 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

/* Quick Capture Modal */
.quick-capture-modal {
    max-width: 600px;
}

.quick-capture-modal textarea {
    font-size: var(--font-size-lg);
    background: transparent;
    border: none;
    resize: none;
}

.quick-capture-modal textarea:focus {
    box-shadow: none;
}

/* Task Modal */
.task-modal {
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.task-title-input {
    font-size: var(--font-size-lg);
    font-weight: 500;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--color-border);
    border-radius: 0;
    padding: var(--space-md) 0;
}

.task-title-input:focus {
    border-color: var(--color-primary);
    box-shadow: none;
}

.task-meta-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.task-meta-grid .form-group {
    margin-bottom: 0;
}

.task-meta-grid label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Shortcuts Modal */
.shortcuts-modal {
    max-width: 600px;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.shortcut-section h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: var(--font-size-sm);
}

.shortcut-item kbd {
    min-width: 28px;
    padding: 4px 8px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    text-align: center;
}

.shortcut-item span {
    color: var(--color-text-secondary);
}

/* === TOAST NOTIFICATIONS === */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 2000;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: toastEnter 300ms ease-out;
    min-width: 300px;
}

@keyframes toastEnter {
    from {
        opacity: 0;
        transform: translateX(100%);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast.success {
    border-left: 4px solid var(--color-success);
}

.toast.error {
    border-left: 4px solid var(--color-error);
}

.toast.warning {
    border-left: 4px solid var(--color-warning);
}

.toast.info {
    border-left: 4px solid var(--color-info);
}

.toast-icon {
    font-size: var(--font-size-xl);
}

.toast.success .toast-icon {
    color: var(--color-success);
}

.toast.error .toast-icon {
    color: var(--color-error);
}

.toast.warning .toast-icon {
    color: var(--color-warning);
}

.toast.info .toast-icon {
    color: var(--color-info);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.toast-close {
    color: var(--color-text-tertiary);
    padding: var(--space-xs);
}

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

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

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

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

    .mobile-only {
        display: flex !important;
    }
}

@media (min-width: 1025px) {
    .mobile-only {
        display: none !important;
    }
}

@media (max-width: 640px) {
    .header-center {
        display: none;
    }

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

    .task-meta-grid {
        grid-template-columns: 1fr;
    }

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

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

/* === SCROLLBAR === */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}

/* === ICON SYSTEM === */
/* Base icon styles */
[class^="icon-"],
[class*=" icon-"] {
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* Icon definitions using emoji fallbacks for simplicity */
.icon-mail::before {
    content: "📧";
}

.icon-lock::before {
    content: "🔒";
}

.icon-eye::before {
    content: "👁";
}

.icon-arrow-right::before {
    content: "→";
}

.icon-user-plus::before {
    content: "👤";
}

.icon-panel-left::before {
    content: "☰";
}

.icon-plus::before {
    content: "+";
    font-weight: bold;
}

.icon-layout-dashboard::before {
    content: "📊";
}

.icon-inbox::before {
    content: "📥";
}

.icon-zap::before {
    content: "⚡";
}

.icon-calendar::before {
    content: "📅";
}

.icon-calendar-days::before {
    content: "🗓";
}

.icon-clock::before {
    content: "🕐";
}

.icon-calendar-clock::before {
    content: "⏰";
}

.icon-cloud::before {
    content: "☁";
}

.icon-file-text::before {
    content: "📄";
}

.icon-target::before {
    content: "🎯";
}

.icon-activity::before {
    content: "📈";
}

.icon-refresh-cw::before {
    content: "🔄";
}

.icon-shield::before {
    content: "🛡";
}

.icon-settings::before {
    content: "⚙";
}

.icon-menu::before {
    content: "☰";
}

.icon-search::before {
    content: "🔍";
}

.icon-bell::before {
    content: "🔔";
}

.icon-keyboard::before {
    content: "⌨";
}

.icon-log-out::before {
    content: "🚪";
}

.icon-x::before {
    content: "✕";
}

.icon-git-branch::before {
    content: "⑂";
}

.icon-users::before {
    content: "👥";
}

.icon-flag::before {
    content: "🚩";
}

.icon-alert-circle::before {
    content: "⚠";
}

.icon-battery::before {
    content: "🔋";
}

.icon-folder::before {
    content: "📁";
}

.icon-map-pin::before {
    content: "📍";
}

.icon-layers::before {
    content: "📚";
}

.icon-user::before {
    content: "👤";
}

.icon-tag::before {
    content: "🏷";
}

.icon-check::before {
    content: "✓";
}

.icon-check-circle::before {
    content: "✅";
}

.icon-trash-2::before {
    content: "🗑";
}

.icon-edit::before {
    content: "✏";
}

.icon-more-horizontal::before {
    content: "⋯";
}

.icon-more-vertical::before {
    content: "⋮";
}

.icon-star::before {
    content: "⭐";
}

.icon-pin::before {
    content: "📌";
}

.icon-play::before {
    content: "▶";
}

.icon-pause::before {
    content: "⏸";
}

.icon-square::before {
    content: "⏹";
}

.icon-rotate-ccw::before {
    content: "↺";
}

.icon-volume-2::before {
    content: "🔊";
}

.icon-brain::before {
    content: "🧠";
}

.icon-sparkles::before {
    content: "✨";
}

.icon-chevron-down::before {
    content: "▼";
}

.icon-chevron-right::before {
    content: "▶";
}

.icon-chevron-left::before {
    content: "◀";
}

.icon-external-link::before {
    content: "🔗";
}

.icon-copy::before {
    content: "📋";
}

.icon-download::before {
    content: "⬇";
}

.icon-upload::before {
    content: "⬆";
}

.icon-save::before {
    content: "💾";
}

.icon-home::before {
    content: "🏠";
}

.icon-sun::before {
    content: "☀";
}

.icon-moon::before {
    content: "🌙";
}

.icon-loader::before {
    content: "⏳";
}

.icon-info::before {
    content: "ℹ";
}

/* Additional icons */
.icon-edit-2::before,
.icon-edit-3::before {
    content: "✏";
}

.icon-bold::before {
    content: "𝐁";
}

.icon-italic::before {
    content: "𝐼";
}

.icon-heading::before {
    content: "H";
}

.icon-list::before {
    content: "☰";
}

.icon-code::before {
    content: "⟨⟩";
}

.icon-link::before {
    content: "🔗";
}

.icon-align-left::before {
    content: "≡";
}

.icon-archive::before {
    content: "📦";
}

.icon-alert-triangle::before {
    content: "⚠";
}

.icon-bookmark::before {
    content: "🔖";
}

.icon-check-square::before {
    content: "☑";
}

.icon-coffee::before {
    content: "☕";
}

.icon-database::before {
    content: "🗄";
}

.icon-filter::before {
    content: "🔍";
}

.icon-folder-plus::before {
    content: "📁";
}

.icon-hard-drive::before {
    content: "💾";
}

.icon-hash::before {
    content: "#";
}

.icon-key::before {
    content: "🔑";
}

.icon-layout::before {
    content: "⊞";
}

.icon-lightbulb::before {
    content: "💡";
}

.icon-palette::before {
    content: "🎨";
}

.icon-repeat::before {
    content: "🔁";
}

.icon-send::before {
    content: "📤";
}

.icon-trash::before {
    content: "🗑";
}

.icon-volume-x::before {
    content: "🔇";
}

.icon-x-circle::before {
    content: "⊗";
}

/* Sidebar collapsible logic */
.nav-section-header.collapsible {
    cursor: pointer;
    user-select: none;
}

.nav-section-header.collapsible .header-title {
    display: flex;
    align-items: center;
}

.nav-section-header.collapsible .toggle-icon {
    transition: transform 0.2s ease;
    margin-right: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.nav-section.collapsed .nav-items-list {
    display: none;
}

.nav-section.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

/* Sidebar Scroll & Search */
.nav-items-list.scrollable {
    max-height: 250px;
    overflow-y: auto;
    scrollbar-width: thin;
    /* Firefox */
    scrollbar-color: var(--text-muted) transparent;
    /* Firefox */
}

/* Webkit Scrollbar */
.nav-items-list.scrollable::-webkit-scrollbar {
    width: 4px;
}

.nav-items-list.scrollable::-webkit-scrollbar-track {
    background: transparent;
}

.nav-items-list.scrollable::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 4px;
}

.nav-items-list.scrollable::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

/* Search Input */
.sidebar-search-wrap {
    padding: 2px 12px 6px 12px;
}

.sidebar-search {
    width: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid transparent;
    color: var(--text-primary);
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 12px;
    transition: all 0.2s ease;
}

.sidebar-search:focus {
    background-color: var(--bg-primary);
    border-color: var(--primary-color);
    outline: none;
}

.sidebar-search::placeholder {
    color: var(--text-muted);
}

/* Fix collapsible for new wrapper */
.nav-section.collapsed .nav-section-content {
    display: none;
}

/* Override old rule if exists */
.nav-section.collapsed .nav-items-list {
    display: block !important;
    /* Reset, controlled by parent content wrapper */
}

/* Reset weird active styles for dynamic sidebar lists */
.nav-items-list .nav-item {
    background: transparent !important;
    margin: 0 !important;
    border-radius: 4px;
    /* Less rounded */
}

.nav-items-list .nav-item.active {
    background: var(--color-bg-hover) !important;
    /* Subtle gray instead of strong purple */
    color: var(--color-text-primary) !important;
    font-weight: 600;
}

/* Fix the indicator dot styles */
.nav-items-list .nav-item::before {
    background-color: var(--item-color, var(--color-text-tertiary)) !important;
    width: 6px !important;
    height: 6px !important;
    border-radius: 50% !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    left: 10px !important;
    /* Adjust position */
}

/* Ensure scaling doesn't affect list items weirdly */
.nav-items-list .nav-item:hover {
    transform: none !important;
    /* Disable displacement hover effect for lists */
    background: var(--color-bg-hover) !important;
}

/* Text alignment fix */
.nav-items-list .nav-item span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* AI Research Button Style */
.btn-ai {
    background: linear-gradient(135deg, var(--color-primary) 0%, #8b5cf6 100%);
    color: white;
    border: none;
    transition: all 0.3s ease;
}

.btn-ai:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
}

.btn-ai:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* =====================================
   ADMIN PANEL STYLES
   ===================================== */

/* Hide admin nav link by default - shown via JS for admin users */
.admin-nav-item {
    /* Always visible for now - backend handles access control */
}

.admin-nav-item.visible {
    display: flex !important;
}

.admin-panel {
    padding: var(--space-lg);
}

/* Admin Stats Grid */
.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.admin-stat-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    transition: all var(--transition-fast);
}

.admin-stat-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.admin-stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.admin-stat-icon.users {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.admin-stat-icon.active {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.admin-stat-icon.admins {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.admin-stat-icon.today {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.admin-stat-info {
    display: flex;
    flex-direction: column;
}

.admin-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1;
}

.admin-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

/* System Stats */
.admin-system-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    padding: var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
}

.system-stat {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.system-stat i {
    font-size: 18px;
    color: var(--color-text-tertiary);
}

.system-stat .stat-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.system-stat .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Admin Section */
.admin-section {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.admin-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.admin-section-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.admin-filters {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.search-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrap i {
    position: absolute;
    left: var(--space-md);
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.search-input-wrap input {
    padding-left: 40px;
    min-width: 250px;
}

.admin-filters select {
    min-width: 150px;
}

/* Admin Table */
.admin-table-wrapper {
    overflow-x: auto;
}

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

.admin-table th,
.admin-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.admin-table th {
    background: var(--color-bg-tertiary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.admin-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.admin-table th.sortable:hover {
    color: var(--color-primary);
}

.admin-table th i {
    font-size: 12px;
    margin-left: var(--space-xs);
    opacity: 0.5;
}

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

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

.admin-table td {
    font-size: var(--font-size-sm);
}

.admin-user-cell {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.admin-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
    flex-shrink: 0;
}

.admin-user-email {
    font-weight: 500;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-user-stats {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.admin-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Admin Badges */
.admin-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.admin-badge.active {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.admin-badge.inactive {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.admin-badge.admin {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.admin-badge.user {
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

/* Admin Actions */
.admin-actions {
    display: flex;
    gap: var(--space-xs);
}

.admin-actions .btn-icon-sm {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
}

.admin-actions .btn-icon-sm:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.admin-actions .btn-icon-sm.warning:hover {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.admin-actions .btn-icon-sm.success:hover {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.admin-actions .btn-icon-sm.danger:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.admin-empty {
    text-align: center;
    padding: var(--space-2xl) !important;
    color: var(--color-text-tertiary);
}

/* Admin Pagination */
.admin-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.pagination-buttons {
    display: flex;
    gap: var(--space-xs);
}

.pagination-buttons .btn {
    min-width: 36px;
    padding: var(--space-sm);
}

.pagination-ellipsis {
    padding: 0 var(--space-sm);
    color: var(--color-text-tertiary);
}

.pagination-info {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* User Details Modal Specific */
.user-details-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.user-detail-card {
    text-align: center;
}

.user-detail-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: white;
}

.user-detail-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.user-detail-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.user-badges {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.user-detail-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.user-detail-stats .stat-item {
    background: var(--color-bg-tertiary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

.user-detail-stats .stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
}

.user-detail-stats .stat-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.user-sessions {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.user-sessions h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.sessions-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.session-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.session-device {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.session-ip {
    color: var(--color-text-tertiary);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
}

/* Error State */
.error-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-text-secondary);
}

.error-state i {
    font-size: 64px;
    color: var(--color-warning);
    margin-bottom: var(--space-lg);
}

.error-state h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.error-state p {
    margin-bottom: var(--space-lg);
}

/* Modal description text */
.modal-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
}

/* Button warning style */
.btn-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}

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

/* Admin responsive */
@media (max-width: 768px) {
    .admin-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .user-details-grid {
        grid-template-columns: 1fr;
    }

    .admin-section-header {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-filters {
        flex-direction: column;
    }

    .search-input-wrap input {
        min-width: 100%;
    }

    .admin-table th:nth-child(3),
    .admin-table td:nth-child(3),
    .admin-table th:nth-child(4),
    .admin-table td:nth-child(4) {
        display: none;
    }
}

@media (max-width: 480px) {
    .admin-stats-grid {
        grid-template-columns: 1fr;
    }
}