/* ============================================
   AI Task Assistant - Modern UI Styles
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* Neutrals */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    /* Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.1);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

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

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

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

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    color: var(--text-primary);
    line-height: 1.6;
    height: 100dvh;
    /* Dynamic viewport height for mobile */
    overflow: hidden;
    /* Prevent body scroll */
    position: relative;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   Authentication Styles
   ============================================ */

.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.auth-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

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

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.auth-form {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-sans);
    transition: all var(--transition-base);
}

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

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

.form-switch {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-switch a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* ============================================
   Button Styles
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    font-family: var(--font-sans);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    width: 100%;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-send {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.75rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.btn-send:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   App Container
   ============================================ */

.app-container {
    display: flex;
    flex-direction: column;
    height: 100dvh;
    /* Dynamic viewport height */
    position: relative;
    z-index: 1;
}

/* ============================================
   Header
   ============================================ */

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    position: relative;
    /* Ensure stacking context */
    z-index: 100;
    /* Keep header above content */
}

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

.logo-icon-small {
    font-size: 2rem;
    animation: float 3s ease-in-out infinite;
}

.header-title {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
}

.user-avatar {
    font-size: 1.25rem;
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.user-dropdown {
    position: absolute;
    top: 60px;
    /* Adjusted top */
    right: 10px;
    /* Adjusted right */
    background: #0f172a;
    /* Solid background (Darkest Slate) */
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    width: 220px;
    /* Slightly narrower */
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    /* Strong shadow */
    display: none;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: 9999;
    /* Max z-index */
    animation: slideUp 0.2s ease;
}

.user-dropdown.active {
    display: flex;
}

.dropdown-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.dropdown-email {
    font-size: 0.9rem;
    color: var(--text-primary);
    word-break: break-all;
}

.desktop-only {
    display: block;
}

/* ============================================
   Main Content
   ============================================ */

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ============================================
   Sidebar
   ============================================ */

.sidebar {
    width: 320px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
}

.sidebar-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

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

.stat-card {
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.suggestions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.suggestion-btn {
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
}

.suggestion-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
    color: var(--text-primary);
    transform: translateX(4px);
}

/* ============================================
   Chat Section
   ============================================ */

.chat-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-xl);
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Custom Scrollbar */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.welcome-message {
    text-align: center;
    padding: var(--spacing-2xl);
    animation: fadeIn 0.5s ease;
}

.welcome-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    animation: wave 2s ease-in-out infinite;
}

@keyframes wave {

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

    25% {
        transform: rotate(20deg);
    }

    75% {
        transform: rotate(-20deg);
    }
}

.welcome-message h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-message p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.welcome-list {
    list-style: none;
    display: inline-block;
    text-align: left;
}

.welcome-list li {
    color: var(--text-secondary);
    padding: var(--spacing-sm) 0;
    position: relative;
    padding-left: var(--spacing-lg);
}

.welcome-list li::before {
    content: '💬';
    position: absolute;
    left: 0;
}

/* Message Bubbles */
.message {
    display: flex;
    gap: var(--spacing-md);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.message.assistant .message-avatar {
    background: rgba(99, 102, 241, 0.2);
}

.message-content {
    max-width: 70%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-sm);
    width: fit-content;
}

.message.user .message-content {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
}

.message-text {
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

/* Agent Status */
.agent-status {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    padding: var(--spacing-sm) var(--spacing-md);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-light);
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

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

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.status-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Chat Input */
.chat-input-container {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
}

.chat-form {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    padding: 0.8rem 1.2rem;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--glass-border);
    border-radius: 30px;
    /* Pill shape */
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-sans);
    resize: none;
    max-height: 120px;
    transition: all var(--transition-base);
    line-height: 1.4;
    overflow-y: hidden;
    /* Hide scrollbar for single line */
}

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

.chat-input::placeholder {
    color: var(--text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .sidebar {
        width: 280px;
    }

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

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 70px;
        /* Header height approx */
        bottom: 0;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 80%;
        max-width: 320px;
        display: block;
        /* Make sure it's block so transform works, override flex logic if any */
    }

    .sidebar.active {
        transform: translateX(0);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    .resizer {
        display: none;
    }

    .message-content {
        max-width: 85%;
        padding: 0.6rem 0.8rem;
        /* Smaller padding on mobile */
    }

    .app-header {
        padding: var(--spacing-md);
    }

    .header-title {
        font-size: 0.95rem;
        /* Smaller font for mobile title */
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 180px;
        /* Prevent overflow */
    }

    .logo-icon-small {
        font-size: 1.5rem;
        /* Smaller logo */
    }

    .header-left {
        gap: 8px;
        /* Reduce gap */
    }

    .user-email,
    .desktop-only {
        display: none !important;
    }

    .menu-toggle {
        display: flex !important;
    }
}

/* ============================================
   Modal Styles
   ============================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.modal.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    width: 90%;
    max-width: 600px;
    transform: translateY(20px) scale(0.95);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.modal.visible .modal-content {
    transform: translateY(0) scale(1);
}

.modal-header {
    margin-bottom: var(--spacing-md);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-body {
    margin-bottom: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

@media (max-width: 480px) {
    .auth-card {
        padding: var(--spacing-lg);
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .logo-container {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        /* Crucial for centering children */
        text-align: center;
        width: 100%;
        gap: 0;
    }

    .auth-header {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .chat-container {
        padding: 0;
    }

    .chat-input-container {
        padding: 10px;
        /* Compact container */
    }

    .chat-input {
        padding: 10px 16px;
        /* Smaller padding */
        font-size: 0.95rem;
        min-height: 44px;
        /* Ensure touch target size */
    }

    .chat-form {
        gap: 8px;
        /* Closer button */
        align-items: center;
        /* Center align for single line look */
    }

    .chat-messages {
        padding: var(--spacing-sm);
    }

    .welcome-icon {
        font-size: 3rem;
    }

    .welcome-message {
        padding: var(--spacing-lg);
    }

    .welcome-message h2 {
        font-size: 1.4rem;
    }

    .message-content {
        max-width: 90%;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

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

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    animation: float 3s ease-in-out infinite;
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 8px;
    margin-right: 12px;
    line-height: 1;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

.menu-toggle:active {
    background: rgba(255, 255, 255, 0.1);
}

.hidden {
    display: none !important;
}

.error-message {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
    animation: shake 0.3s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

/* ============================================
   History List Styles
   ============================================ */

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    border: 1px solid transparent;
    position: relative;
    /* For active border positioning if needed */
}

.history-item:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--glass-border);
    transform: translateX(4px);
    color: var(--text-primary);
}

.history-item.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.2), transparent);
    border-left: 3px solid var(--primary);
    color: var(--primary-light);
    font-weight: 600;
}

.history-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.history-title::before {
    content: '💬';
    font-size: 0.8em;
    opacity: 0.7;
}

.history-delete {
    opacity: 0;
    color: var(--text-muted);
    background: transparent;
    border: none;
    padding: 6px;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.2rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.history-item:hover .history-delete {
    opacity: 1;
}

.history-delete:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    transform: scale(1.1);
}

/* ============================================
   Resizer Styles
   ============================================ */

.resizer {
    width: 6px;
    background: transparent;
    cursor: col-resize;
    transition: background var(--transition-base);
    z-index: 100;
    /* Above others */
    flex-shrink: 0;
    margin-left: -3px;
    /* Center over border? */
    position: relative;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    /* Subtle guide */
}

.resizer:hover,
.resizer.resizing {
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.sidebar {
    /* Ensure sidebar handles width changes */
    flex-shrink: 0;
    min-width: 250px;
    max-width: 600px;
}