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

html {
    background: var(--bg-primary);
    min-height: 100%;
    overscroll-behavior: none; /* Add this */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-x: hidden;
    background: var(--bg-primary); /* This will now inherit from html */
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

html, body {
    background: var(--bg-primary);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overscroll-behavior: none;
}

/* Enhanced Theme Variables */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f8f8;
    --bg-tertiary: #f0f0f0;
    --bg-hover: #e8e8e8;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-accent: #4a4a4a;
    --text-accent-hover: #2a2a2a;
    --border-color: #404040;
    --border-light: #d0d0d0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.15);
    --gradient-subtle: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
    --accent-glow: rgba(74, 74, 74, 0.3);
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
}

[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-hover: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-accent: #d0d0d0;
    --text-accent-hover: #f0f0f0;
    --border-color: #404040;
    --border-light: #2a2a2a;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.5);
    --gradient-subtle: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    --accent-glow: rgba(208, 208, 208, 0.3);
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #d97706;
}

[data-theme="colorful"] {
    --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-secondary: rgba(255, 255, 255, 0.95);
    --bg-tertiary: rgba(255, 255, 255, 0.85);
    --bg-hover: rgba(255, 255, 255, 0.9);
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-accent: #9f7aea;
    --text-accent-hover: #805ad5;
    --border-color: rgba(255, 255, 255, 0.4);
    --border-light: rgba(255, 255, 255, 0.2);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.25);
    --gradient-subtle: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    --accent-glow: rgba(159, 122, 234, 0.3);
    --success-color: #059669;
    --danger-color: #dc2626;
    --warning-color: #d97706;
}

/* Consistent Custom Scrollbar */
.custom-scrollbar {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) var(--bg-tertiary);
}

.custom-scrollbar::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 6px;
    margin: 2px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 6px;
    border: 1px solid var(--bg-tertiary);
    transition: all 0.3s ease;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--text-accent);
    transform: scale(1.1);
}

.custom-scrollbar::-webkit-scrollbar-corner {
    background: var(--bg-tertiary);
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Updated App Container - Full Width */
.app-container {
    min-height: 100vh;
    height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    background: var(--gradient-subtle);
    position: relative;
    overflow: hidden;
    overflow-x: hidden;
    overscroll-behavior: none; /* Add this */
    overscroll-behavior-y: none; /* Add this */
    -webkit-overflow-scrolling: touch; /* Add this */
    box-sizing: border-box;
}

@supports (padding: max(0px)) {
    .app-container {
        padding-top: max(0px, env(safe-area-inset-top));
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }
}

/* Prevent elastic scrolling on iOS */
.app-container,
.messages-area,
.notes-area {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* For iOS standalone apps - nuclear option */
@media (display-mode: standalone) {
    html {
        position: fixed;
        height: 100%;
        overflow: hidden;
        background: var(--bg-primary) !important;
    }
    
    body {
        position: fixed;
        height: 100%;
        width: 100%;
        overflow: hidden;
        background: var(--bg-primary) !important;
        margin: 0;
        padding: 0;
    }
    
    .app-container {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        overflow: hidden;
        background: var(--bg-primary) !important;
    }
    
    /* Only allow scrolling in specific containers */
    .messages-area,
    .notes-area {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Enhanced Header */
.header {
    padding: 1.25rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255,255,255,0.1) 50%, 
        transparent 100%);
    transition: left 0.6s ease;
}

.header:hover::before {
    left: 100%;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
}

:root .header h1,
[data-theme="dark"] .header h1 {
    color: var(--text-accent);
    background: linear-gradient(135deg, var(--text-accent) 0%, var(--text-accent-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlowGrayscale 3s ease-in-out infinite alternate;
}

[data-theme="colorful"] .header h1 {
    color: var(--text-accent);
    background: linear-gradient(135deg, #9f7aea 0%, #805ad5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlowColorful 3s ease-in-out infinite alternate;
}

@keyframes titleGlowGrayscale {
    0% { filter: brightness(1); }
    100% { filter: brightness(1.2) contrast(1.1); }
}

@keyframes titleGlowColorful {
    0% { filter: brightness(1) hue-rotate(0deg); }
    100% { filter: brightness(1.1) hue-rotate(10deg); }
}

.header-buttons {
    display: flex;
    gap: 0.75rem;
    position: relative;
    z-index: 2;
}

/* Enhanced Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--text-accent);
}

.btn:hover::before {
    left: 100%;
}

.btn:active {
    transform: translateY(0);
    transition: transform 0.1s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--text-accent) 0%, var(--text-accent-hover) 100%);
    color: var(--bg-primary);
    border-color: var(--text-accent);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px var(--accent-glow);
    transform: translateY(-3px);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-icon {
    padding: 0.75rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}

.btn-icon svg {
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.btn-icon:hover svg {
    transform: scale(1.1);
}

/* Updated Main Content Layout - Full Width with 1/3 Notes */
.main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: relative;
    z-index: 2;
    width: 100%;
}

/* Chat Only Mode - Full Width */
.main-content.view-chatOnly {
    width: 100%;
}

.main-content.view-chatOnly .chat-container {
    width: 100%;
    flex: 1;
}

/* Notes Only Mode - Full Width */
.main-content.view-notesOnly {
    width: 100%;
}

.main-content.view-notesOnly .notes-container {
    width: 100%;
    flex: 1;
}

/* Both Mode - Chat 2/3, Notes 1/3 */
.main-content.view-both {
    width: 100%;
}

.main-content.view-both .chat-container {
    width: 66.67%;
    flex: 0 0 66.67%;
    border-right: 2px solid var(--border-color);
}

.main-content.view-both .notes-container {
    width: 33.33%;
    flex: 0 0 33.33%;
    border-left: none;
}

/* Chat Container */
.chat-container {
    display: flex;
    flex-direction: column;
    padding: 1.5rem 2rem;
    overflow: hidden;
    background: var(--bg-primary);
}

.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
    margin-bottom: 1.5rem;
    scroll-behavior: smooth;
}

/* Enhanced Message Styles */
.message {
    margin-bottom: 2rem;
    padding: 1.25rem 1.5rem;
    border-radius: 20px;
    max-width: 75%;
    word-wrap: break-word;
    animation: messageSlideIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    backdrop-filter: blur(10px);
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

.message:hover .message-actions {
    opacity: 1;
}

@keyframes messageSlideIn {
    0% { 
        opacity: 0; 
        transform: translateY(20px) scale(0.95);
    }
    100% { 
        opacity: 1; 
        transform: translateY(0) scale(1);
    }
}

.message.user {
    background: linear-gradient(135deg, var(--text-accent) 0%, var(--text-accent-hover) 100%);
    color: var(--bg-primary);
    margin-left: auto;
    border-bottom-right-radius: 8px;
    box-shadow: 0 4px 15px var(--accent-glow);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.message.assistant {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-bottom-left-radius: 8px;
}

.message-content {
    flex: 1;
}

.message-content img {
    max-width: 100%;
    border-radius: 12px;
    margin-top: 1rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.message-content img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.message-actions {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    align-self: flex-end;
}

.action-btn {
    padding: 0.5rem;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    background: var(--text-accent);
    color: var(--bg-primary);
    transform: scale(1.05);
}

.action-btn.delete-btn:hover {
    background: var(--danger-color);
}

/* Input Area */
.input-area {
    padding: 1.5rem 0;
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    border-radius: 0;  /* ← Removes all curved corners */
    backdrop-filter: blur(10px);
    position: relative;
    margin: 0 -2rem;
    padding-left: 2rem;
    padding-right: 2rem;
    box-sizing: border-box;
}

.input-area::before {
    content: '';
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--text-accent), transparent, var(--text-accent));
    animation: borderFlow 3s linear infinite;
}

@keyframes borderFlow {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.input-container {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.input-field {
    flex: 1;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-primary);
    color: var(--text-primary);
    resize: none;
    min-height: 60px;
    max-height: 150px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.input-field:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px var(--accent-glow), inset 0 2px 4px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.input-field::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

.send-btn {
    padding: 1rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--text-accent) 0%, var(--text-accent-hover) 100%);
    color: var(--bg-primary);
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    box-shadow: 0 4px 15px var(--accent-glow);
    position: relative;
    overflow: hidden;
}

.send-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: all 0.6s ease;
    transform: translate(-50%, -50%);
}

.send-btn:hover:not(:disabled) {
    transform: scale(1.05) rotate(15deg);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.send-btn:hover:not(:disabled)::before {
    width: 100%;
    height: 100%;
}

.send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Notes Container - Updated for 1/3 Width */
.notes-container {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: var(--bg-secondary);
    overflow: hidden;
    border-left: 2px solid var(--border-color);
}

.notes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.notes-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-accent);
    flex-shrink: 0;
}

.notes-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Danger button styling */
.btn-danger {
    background: var(--bg-tertiary);
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-danger:hover {
    background: var(--danger-color);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
    transform: translateY(-2px);
}

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

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .notes-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .notes-actions .btn {
        flex: 1;
        min-width: 0;
        font-size: 0.75rem;
        padding: 0.5rem 0.75rem;
    }
    
    .notes-actions .btn svg {
        width: 14px;
        height: 14px;
    }
}


.notes-area {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.note-panel {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 1rem;
    transition: all 0.3s ease;
    position: relative;
    animation: noteSlideIn 0.4s ease;
}

@keyframes noteSlideIn {
    0% { opacity: 0; transform: translateX(20px); }
    100% { opacity: 1; transform: translateX(0); }
}

.note-panel:hover {
    border-color: var(--text-accent);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.note-content {
    margin-bottom: 1rem;
    max-height: 150px;
    overflow-y: auto;
    line-height: 1.5;
    font-size: 0.9rem;
}

.note-content img {
    max-width: 100%;
    border-radius: 8px;
    margin-top: 0.75rem;
    box-shadow: var(--shadow);
}

.note-actions {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.note-timestamp {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-style: italic;
}

.empty-notes {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    text-align: center;
    color: var(--text-secondary);
}

.empty-icon {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-notes p {
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Enhanced Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    backdrop-filter: blur(8px);
    animation: overlayFadeIn 0.3s ease;
}

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

.modal {
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 2.5rem;
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
    animation: modalSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.modal-small {
    max-width: 400px;
    padding: 2rem;
}

@keyframes modalSlideIn {
    0% { 
        opacity: 0; 
        transform: translateY(30px) scale(0.9);
    }
    100% { 
        opacity: 1; 
        transform: translateY(0) scale(1);
    }
}

.modal h2, .modal h3 {
    margin-bottom: 1.5rem;
    color: var(--text-accent);
    font-weight: 700;
}

.modal h2 {
    font-size: 1.5rem;
}

.modal h3 {
    font-size: 1.25rem;
}

.modal-section {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.modal-section:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow);
}

.modal-section h3 {
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.switch-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.theme-option {
    padding: 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-tertiary);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.theme-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.theme-option:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--text-accent);
}

.theme-option:hover::before {
    left: 100%;
}

.theme-option.active {
    border-color: var(--text-accent);
    background: var(--text-accent);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px var(--accent-glow);
}

.memory-editor {
    width: 100%;
    min-height: 200px;
    padding: 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    line-height: 1.6;
}

.memory-editor:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.memory-display {
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    margin-bottom: 1rem;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-light);
    line-height: 1.6;
}

/* Enhanced Loading */
.loading {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-style: italic;
    animation: pulse 2s ease-in-out infinite;
}

.spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border-light);
    border-top-color: var(--text-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Word count styling */
.word-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.75rem;
    text-align: right;
    transition: color 0.3s ease;
}

.word-count.warning {
    color: var(--warning-color);
    font-weight: 600;
}

.word-count.error {
    color: var(--danger-color);
    font-weight: 700;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

/* Enhanced responsive design */
@media (max-width: 1200px) {
    /* Adjust proportions for medium screens */
    .main-content.view-both .chat-container {
        width: 60%;
        flex: 0 0 60%;
    }

    .main-content.view-both .notes-container {
        width: 40%;
        flex: 0 0 40%;
    }
}

@media (max-width: 768px) {
    .app-container {
        height: 100vh;
    }
    
    .header {
        padding: 1rem 1.5rem;
    }
    
    .header h1 {
        font-size: 1.4rem;
    }
    
    .header-buttons {
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }
    
    .btn-icon {
        min-width: 40px;
        min-height: 40px;
        padding: 0.6rem;
    }
    
    .btn-icon svg {
        width: 18px;
        height: 18px;
    }
    
    /* Mobile: Force single view */
    .main-content.view-both .chat-container,
    .main-content.view-both .notes-container {
        width: 100%;
        flex: 1;
        border: none;
    }
    
    .chat-container, .notes-container {
        padding: 1rem;
    }
    
    .message {
        max-width: 90%;
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .input-area {
        margin: 0 -1rem;
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .input-field {
        padding: 0.875rem 1rem;
        min-height: 50px;
    }
    
    .send-btn {
        width: 48px;
        height: 48px;
        padding: 0.75rem;
    }
    
    .modal {
        margin: 0.5rem;
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .modal-section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .theme-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }
    
    .theme-option {
        padding: 1rem;
    }
    
    .notes-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .note-panel {
        padding: 0.875rem;
    }
    
    .note-content {
        font-size: 0.85rem;
        max-height: 120px;
    }
    
    .note-timestamp {
        font-size: 0.65rem;
    }
}

/* PWA specific enhancements */
@media (display-mode: standalone) {
    .header {
        padding-top: calc(env(safe-area-inset-top, 1rem) + 0.5rem);
    }
    
    .app-container {
        min-height: 100vh;
        height: 100vh;
    }
}

/* Focus indicators for accessibility */
.btn:focus-visible,
.input-field:focus-visible,
.theme-option:focus-visible,
.action-btn:focus-visible {
    outline: 2px solid var(--text-accent);
    outline-offset: 2px;
}

/* Smooth transitions for theme changes */
* {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}