/* ================================================================
   OCR FORGE - Modern OCR Interface with Result Preview
   AI-powered text extraction with visual feedback
   ================================================================ */

/* ========== Design System ========== */
:root {
    /* Glassmorphism Theme */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --glass-backdrop: blur(20px) saturate(180%);

    /* Emerald Green Theme for OCR */
    --aurora-1: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --aurora-2: linear-gradient(135deg, #e57373 0%, #ef5350 100%);
    --aurora-3: linear-gradient(135deg, #64b5f6 0%, #42a5f5 100%);
    --aurora-4: linear-gradient(135deg, #66bb6a 0%, #4caf50 100%);
    --aurora-5: linear-gradient(135deg, #ffb74d 0%, #ffa726 100%);

    /* Semantic Colors */
    --primary: #10b981;
    --primary-light: #34d399;
    --primary-dark: #059669;
    --secondary: #90a4ae;
    --accent: #ef5350;
    --success: #66bb6a;
    --warning: #ffb74d;
    --error: #e57373;
    --info: #64b5f6;

    /* Surface Colors */
    --surface-1: rgba(255, 255, 255, 0.95);
    --surface-2: rgba(255, 255, 255, 0.85);
    --surface-3: rgba(255, 255, 255, 0.75);
    --surface-overlay: rgba(0, 0, 0, 0.05);

    /* Text Colors */
    --text-1: #0f172a;
    --text-2: #475569;
    --text-3: #94a3b8;
    --text-inverse: #ffffff;

    /* Spacing Scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Transitions */
    --ease-in-out-cubic: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Typography */
    --font-sans: 'Figtree', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-display: 'Raleway', var(--font-sans);
    --font-mono: 'SF Mono', 'Consolas', monospace;

    /* Z-index */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-toast: 700;
}

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

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: fixed;
    overscroll-behavior: none;
}

body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-1);
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    position: relative;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(52, 211, 153, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(5, 150, 105, 0.15) 0%, transparent 50%);
    animation: aurora 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes aurora {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -50px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

/* ========== App Container ========== */
.app-container {
    display: grid;
    grid-template-columns: 0fr 1fr;
    grid-template-rows: 1fr;
    grid-template-areas: "sidebar main";
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
    position: relative;
    z-index: var(--z-base);
    padding: var(--space-4);
    gap: 0;
    transition: grid-template-columns 0.4s var(--ease-out-expo);
    overflow: hidden;
}

.app-container.sidebar-open {
    grid-template-columns: 320px 1fr;
    gap: var(--space-4);
}

/* ========== Sidebar ========== */
.sidebar {
    grid-area: sidebar;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    box-shadow: var(--glass-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.4s var(--ease-out-expo);
    width: 0;
    opacity: 0;
    visibility: hidden;
}

.sidebar-open .sidebar {
    width: 320px;
    opacity: 1;
    visibility: visible;
}

.sidebar.collapsed {
    width: 0;
    opacity: 0;
    visibility: hidden;
}

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

.sidebar-header .sidebar-toggle {
    display: none;
}

.sidebar-toggle {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--surface-overlay);
    color: var(--text-1);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.sidebar-toggle::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--aurora-1);
    opacity: 0;
    transition: opacity 0.3s;
}

.sidebar-toggle:hover::before {
    opacity: 0.15;
}

.sidebar-toggle:hover {
    transform: scale(1.05);
}

.sidebar-toggle:active {
    transform: scale(0.95);
}

.sidebar-title {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 800;
    background: var(--aurora-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
}

.new-session-btn {
    margin: var(--space-4);
    padding: var(--space-4);
    background: var(--aurora-1);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    transition: all 0.3s var(--ease-out-expo);
}

.new-session-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.search-box {
    margin: 0 var(--space-4) var(--space-4);
    padding: var(--space-3);
    background: var(--surface-overlay);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    width: 100%;
    font-size: 14px;
    color: var(--text-1);
}

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

.session-item {
    padding: var(--space-4);
    margin: var(--space-2) 0;
    background: var(--surface-overlay);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-3);
}

.session-item:hover {
    background: var(--glass-bg);
    border-color: var(--primary);
    transform: translateX(4px);
}

.session-item.active {
    background: var(--aurora-1);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.session-item-title {
    font-weight: 600;
    font-size: 14px;
    color: inherit;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.session-item.active .session-item-title {
    color: var(--text-inverse);
}

.session-item-time {
    font-size: 12px;
    opacity: 0.7;
    color: inherit;
}

.session-item-preview {
    font-size: 12px;
    opacity: 0.6;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: inherit;
}

.session-info {
    flex: 1;
}

.session-name {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: var(--space-1);
}

.session-meta {
    font-size: 12px;
    opacity: 0.7;
}

.session-delete {
    background: transparent;
    border: none;
    color: var(--text-3);
    cursor: pointer;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    transition: all 0.3s var(--ease-out-expo);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.session-delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    transform: scale(1.1);
}

.session-item:hover .session-delete {
    color: var(--text-2);
}

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

.sidebar-user-btn {
    width: 100%;
    padding: var(--space-4);
    background: var(--surface-overlay);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: all 0.3s var(--ease-out-expo);
}

.sidebar-user-btn:hover {
    background: var(--surface-1);
    transform: translateY(-2px);
}

.user-avatar {
    width: 44px;
    height: 44px;
    background: var(--aurora-1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    color: var(--text-inverse);
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-1);
}

/* ========== Mobile Overlay ========== */
.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: calc(var(--z-fixed) - 1);
    opacity: 0;
    transition: opacity 0.4s var(--ease-out-expo);
}

.mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* ========== Main Content ========== */
.main-content {
    grid-area: main;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    box-shadow: var(--glass-shadow);
    display: grid;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
        "header"
        "ocr"
        "controls";
    overflow: hidden;
}

.top-bar {
    grid-area: header;
    padding: var(--space-4);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ========== OCR Area with Preview ========== */
.ocr-area {
    grid-area: ocr;
    overflow-y: auto;
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.welcome-message {
    text-align: center;
    padding: var(--space-8) var(--space-4);
    color: var(--text-2);
}

.welcome-message h1 {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 900;
    background: var(--aurora-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
}

.welcome-message p {
    font-size: 18px;
    color: var(--text-3);
}

/* OCR Result Card */
.ocr-result {
    background: var(--surface-1);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    animation: resultIn 0.4s var(--ease-spring);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

@keyframes resultIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.result-preview {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--surface-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.result-preview img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.result-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--glass-border);
}

.result-title {
    font-weight: 700;
    color: var(--text-1);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.result-actions {
    display: flex;
    gap: var(--space-2);
}

.action-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: none;
    background: var(--surface-overlay);
    color: var(--text-2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--ease-out-expo);
}

.action-btn:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: scale(1.1);
}

.result-content {
    flex: 1;
    background: var(--surface-overlay);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    font-size: 13px;
    line-height: 1.4;
    overflow-y: auto;
    max-height: 300px;
    font-family: var(--font-mono);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.page-text {
    padding: var(--space-2) 0;
    line-height: 1.4;
}

.page-text p {
    margin: 0;
    padding: 3px 0;
    line-height: 1;
}

.result-tabs {
    margin-top: var(--space-4);
}

.tab-buttons {
    display: flex;
    gap: var(--space-2);
    border-bottom: 2px solid var(--glass-border);
    padding-bottom: var(--space-2);
}

.tab-btn {
    padding: var(--space-2) var(--space-4);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-2);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.tab-btn:hover {
    color: var(--primary);
    background: var(--surface-overlay);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

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

.tab-content {
    display: none;
    padding: var(--space-4) 0;
}

.tab-content.active {
    display: block;
}

.result-preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.preview-image-box {
    background: var(--surface-overlay);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    position: relative;
}

.preview-image-box img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.preview-image-box canvas {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding-top: var(--space-3);
    border-top: 1px solid var(--glass-border);
}

.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    background: var(--surface-overlay);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-3);
}

/* ========== Controls ========== */
.controls {
    grid-area: controls;
    padding: var(--space-5);
    border-top: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.processing-status {
    display: none;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(52, 211, 153, 0.2) 100%);
    border: 2px solid var(--primary);
    border-radius: var(--radius-full);
    font-weight: 700;
    color: var(--primary-dark);
}

.processing-status.active {
    display: flex;
}

.processing-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(16, 185, 129, 0.3);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.upload-area {
    position: relative;
}

.upload-area input[type="file"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--surface-overlay);
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
    text-align: center;
}

.upload-label:hover {
    background: var(--surface-1);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.upload-label i {
    font-size: 48px;
    color: var(--primary);
}

.upload-label span {
    font-weight: 700;
    color: var(--text-1);
}

.upload-label small {
    color: var(--text-3);
    font-size: 13px;
}

.upload-area.drag-over .upload-label {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--primary);
    transform: scale(1.02);
}

.controls-buttons {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.control-btn {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all 0.3s var(--ease-out-expo);
    color: var(--text-inverse);
}

.control-btn:hover {
    transform: translateY(-4px) scale(1.1);
}

.control-btn.btn-primary {
    background: var(--aurora-1);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.control-btn.btn-success {
    background: var(--aurora-4);
    box-shadow: 0 8px 20px rgba(102, 187, 106, 0.3);
}

.control-btn.btn-secondary {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.3);
}

.control-btn.btn-secondary:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    box-shadow: 0 12px 28px rgba(239, 68, 68, 0.4);
}

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-backdrop);
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.3);
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    animation: modalIn 0.4s var(--ease-spring);
    position: relative;
    overflow: hidden;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--surface-overlay);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-popover);
    transition: all 0.3s var(--ease-out-expo);
}

.modal-close:hover {
    background: var(--error);
    color: var(--text-inverse);
    transform: rotate(90deg) scale(1.1);
}

.modal-layout {
    display: flex;
    height: 100%;
    overflow: hidden;
}

.modal-sidebar {
    width: 240px;
    background: var(--surface-overlay);
    border-right: 1px solid var(--glass-border);
    padding: var(--space-8) var(--space-4) var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.modal-section-btn {
    width: 100%;
    padding: var(--space-3);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-2);
    transition: all 0.3s var(--ease-out-expo);
    text-align: left;
}

.modal-section-btn:hover {
    background: var(--surface-1);
}

.modal-section-btn.active {
    background: var(--surface-1);
    color: var(--primary);
    border-color: var(--primary);
}

.modal-main {
    flex: 1;
    padding: var(--space-8) var(--space-6);
    overflow-y: auto;
    min-height: 0;
    position: relative;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 900;
    margin-bottom: var(--space-5);
    background: var(--aurora-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.settings-section {
    display: none;
}

.settings-section.active {
    display: block;
}

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

.setting-group label {
    display: block;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: var(--space-2);
}

.setting-group input[type="text"],
.setting-group input[type="password"],
.setting-group select {
    width: 100%;
    padding: var(--space-3);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: 15px;
    background: var(--surface-overlay);
    color: var(--text-1);
    transition: all 0.3s var(--ease-out-expo);
}

.setting-group input:focus,
.setting-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--surface-1);
}

.save-settings-btn {
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-5);
    background: var(--aurora-1);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.save-settings-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

/* ========== Toast ========== */
.toast-notification {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-full);
    box-shadow: var(--glass-shadow);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    z-index: var(--z-toast);
    transition: bottom 0.4s var(--ease-out-expo);
    font-weight: 600;
}

.toast-notification.show {
    bottom: var(--space-5);
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--aurora-1);
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
    background-clip: content-box;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .ocr-result {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 1fr !important;
        gap: var(--space-3) !important;
        padding: var(--space-3);
    }

    .sidebar {
        position: fixed;
        top: var(--space-3);
        left: var(--space-3);
        bottom: var(--space-3);
        width: calc(100% - var(--space-6));
        max-width: 320px;
        z-index: var(--z-fixed);
        transform: translateX(-110%);
        transition: transform 0.4s var(--ease-out-expo), opacity 0.4s var(--ease-out-expo);
    }

    .sidebar:not(.collapsed) {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-overlay {
        display: none;
    }

    .mobile-overlay.active {
        display: block;
    }
}

@media (max-width: 640px) {
    .app-container {
        gap: var(--space-2);
        padding: var(--space-2);
    }

    .sidebar {
        width: calc(100% - var(--space-4));
        max-width: 320px;
    }

    /* Reduce top bar padding */
    .top-bar {
        padding: var(--space-2);
    }

    /* Reduce OCR area padding to show more content */
    .ocr-area {
        padding: var(--space-2);
    }

    /* Reduce welcome message padding */
    .welcome-message {
        padding: var(--space-4) var(--space-2);
    }

    .welcome-message h1 {
        font-size: 28px;
    }

    .welcome-message p {
        font-size: 14px;
    }

    /* Compact controls area */
    .controls {
        padding: var(--space-2);
        gap: var(--space-2);
    }

    /* Hide drag/drop upload area on mobile - use button instead */
    .upload-area {
        display: none;
    }

    /* Smaller control buttons */
    .control-btn {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .controls-buttons {
        gap: var(--space-2);
    }

    /* Compact result cards */
    .ocr-result-card {
        padding: var(--space-3);
        gap: var(--space-2);
        margin-bottom: var(--space-2);
    }

    .result-header {
        padding-bottom: var(--space-2);
    }

    .result-header h3 {
        font-size: 16px;
    }

    .result-meta {
        font-size: 11px;
        gap: var(--space-2);
    }

    /* Compact preview containers */
    .preview-image-box {
        padding: var(--space-2);
        min-height: 200px;
    }

    .page-header {
        font-size: 13px;
        padding: var(--space-2) 0;
    }

    .page-text {
        font-size: 13px;
        padding: var(--space-2) 0;
    }

    /* Compact tabs */
    .tab-btn {
        padding: var(--space-2) var(--space-3);
        font-size: 13px;
    }

    .tab-content {
        padding: var(--space-2) 0;
    }

    /* Modal styles */
    .modal-content {
        width: 96%;
        height: auto;
        max-height: 50vh;
        border-radius: var(--radius-md);
    }

    .modal-layout {
        flex-direction: column;
    }

    .modal-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
        padding: var(--space-2);
        padding-top: var(--space-8);
        flex-direction: row;
        overflow-x: visible;
        gap: var(--space-2);
        display: flex;
        justify-content: stretch;
        order: 2;
    }

    .modal-section-btn {
        flex: 1;
        white-space: nowrap;
        padding: var(--space-3);
        font-size: 13px;
        text-align: center;
        justify-content: center;
        -webkit-tap-highlight-color: rgba(16, 185, 129, 0.2);
        touch-action: manipulation;
    }

    .modal-main {
        padding: var(--space-4) var(--space-3);
        overflow-y: auto;
        max-height: calc(50vh - 100px);
        order: 3;
    }

    .modal-close {
        top: var(--space-2);
        right: var(--space-2);
        width: 36px;
        height: 36px;
        font-size: 20px;
    }

    /* Reduce processing status size */
    .processing-status {
        padding: var(--space-2);
        font-size: 13px;
        gap: var(--space-2);
    }

    .processing-spinner {
        width: 16px;
        height: 16px;
    }
}