:root {
    /* Light theme colors (default) */
    --light-bg-primary: #e0e5ec;
    --light-bg-secondary: #eef1f6;
    --light-shadow-light: #ffffff;
    --light-shadow-dark: rgba(163, 177, 198, 0.5);
    --light-text-primary: #333a56;
    --light-text-secondary: #5a6885;
    --light-text-tertiary: #8896b8;
    --light-border: rgba(209, 217, 230, 0.8);
    --light-accent-primary: #6b5ce7;
    --light-accent-secondary: #7474bf;
    --light-accent-tertiary: #338aff;
    --light-success: #10b981;
    --light-warning: #f59e0b;
    --light-error: #ef4444;

    /* Enhanced Dark theme colors */
    --dark-bg-primary: #1a1d29;
    --dark-bg-secondary: #232736;
    --dark-shadow-light: rgba(45, 50, 80, 0.3);
    --dark-shadow-dark: rgba(10, 12, 26, 0.7);
    --dark-text-primary: #eef2ff;
    --dark-text-secondary: #b3bedf;
    --dark-text-tertiary: #8890b5;
    --dark-border: rgba(60, 70, 110, 0.3);

    --dark-accent-primary: #7c5dfa;
    --dark-accent-secondary: #9277ff;
    --dark-accent-tertiary: #4f8eff;
    --dark-success: #3ecf8e;
    --dark-warning: #ffba2d;
    --dark-error: #ff6363;

    /* Spacing variables */
    --space-1: 0.25rem;
    /*  4px */
    --space-2: 0.5rem;
    /*  8px */
    --space-3: 0.75rem;
    /* 12px */
    --space-4: 1rem;
    /* 16px */
    --space-5: 1.25rem;
    /* 20px */
    --space-6: 1.5rem;
    /* 24px */
    --space-8: 2rem;
    /* 32px */
    --space-10: 2.5rem;
    /* 40px */
    --space-12: 3rem;
    /* 48px */

    /* Dimensions */
    --header-height: 4rem;
    --footer-height: 3rem;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;

    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2rem;

    /* Z-index layers */
    --z-base: 1;
    --z-above: 10;
    --z-modal: 100;
    --z-overlay: 200;
    --z-toast: 300;

    /* Animation */
    --transition-fast: 150ms;
    --transition-normal: 250ms;
    --transition-slow: 350ms;
    --transition-very-slow: 500ms;
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

    /* Container */
    --container-width: 1200px;

    --bg-primary: var(--dark-bg-primary);
    --bg-secondary: var(--dark-bg-secondary);
    --shadow-light: var(--dark-shadow-light);
    --shadow-dark: var(--dark-shadow-dark);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --text-tertiary: var(--dark-text-tertiary);
    --border-color: var(--dark-border);
    --accent-primary: var(--dark-accent-primary);
    --accent-secondary: var(--dark-accent-secondary);
    --accent-tertiary: var(--dark-accent-tertiary);
    --color-success: var(--dark-success);
    --color-warning: var(--dark-warning);
    --color-error: var(--dark-error);

    --shadow-flat: 5px 5px 10px var(--shadow-dark), -5px -5px 10px var(--shadow-light);
    --shadow-pressed: inset 2px 2px 5px var(--shadow-dark), inset -2px -2px 5px var(--shadow-light);
    --shadow-inset: inset 2px 2px 5px var(--shadow-dark), inset -2px -2px 5px var(--shadow-light);
}

/* Light theme variables */
[data-theme="light"] {
    --bg-primary: var(--light-bg-primary);
    --bg-secondary: var(--light-bg-secondary);
    --shadow-light: var(--light-shadow-light);
    --shadow-dark: var(--light-shadow-dark);
    --text-primary: var(--light-text-primary);
    --text-secondary: var(--light-text-secondary);
    --text-tertiary: var(--light-text-tertiary);
    --border-color: var(--light-border);
    --accent-primary: var(--light-accent-primary);
    --accent-secondary: var(--light-accent-secondary);
    --accent-tertiary: var(--light-accent-tertiary);
    --color-success: var(--light-success);
    --color-warning: var(--light-warning);
    --color-error: var(--light-error);
}

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

html,
body {
    height: 100%;
    width: 100%;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.5;
    transition: background-color var(--transition-normal) var(--ease-out),
        color var(--transition-normal) var(--ease-out);
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-lg);
}

h5 {
    font-size: var(--font-size-md);
}

h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--accent-secondary);
}

button {
    font-family: var(--font-family);
    cursor: pointer;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.main-content {
    flex: 1;
    padding: var(--space-8) 0;
}

.neu-flat {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-flat);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal) var(--ease-out);
}

.neu-pushed {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-pressed);
    border-radius: var(--border-radius-md);
}

.neu-inset {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-inset);
    border-radius: var(--border-radius-md);
}

button.neu-flat:hover:not(:disabled),
a.neu-flat:hover {
    box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
}

button.neu-flat:active:not(:disabled),
a.neu-flat:active {
    box-shadow: var(--shadow-pressed);
}

.app-header {
    padding: var(--space-8) 0 var(--space-6);
    margin-bottom: var(--space-4);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--border-radius-md);
}

.logo i {
    font-size: var(--font-size-3xl);
    color: var(--accent-primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

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

.header-intro {
    text-align: center;
    margin-bottom: var(--space-8);
}

.header-intro h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-3);
    background: linear-gradient(to right, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-intro p {
    font-size: var(--font-size-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.tabs-nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    padding: var(--space-2);
    gap: var(--space-2);
}

.tab-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--space-4) var(--space-2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: color var(--transition-normal) var(--ease-out);
    position: relative;
}

.tab-btn i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-2);
    transition: transform var(--transition-normal) var(--ease-out),
        color var(--transition-normal) var(--ease-out);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 40px;
    height: 3px;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
    border-radius: 3px;
    opacity: 0;
    transition: transform var(--transition-normal) var(--ease-out),
        opacity var(--transition-normal) var(--ease-out);
}

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

.tab-btn:hover i {
    transform: translateY(-2px);
}

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

.tab-btn.active i {
    color: var(--accent-primary);
    transform: translateY(-3px) scale(1.1);
}

.tab-btn.active::after {
    opacity: 1;
    transform: translateX(-50%) scaleX(1);
}

.tab-panels {
    position: relative;
}

.panel {
    display: none;
    animation: fadeIn var(--transition-normal) var(--ease-out);
}

.panel.active {
    display: block;
}

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

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

.card {
    margin-bottom: var(--space-6);
    transition: transform var(--transition-normal) var(--ease-out);
}

.card:hover {
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: center;
    padding: var(--space-5);
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.header-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--space-4);
    flex-shrink: 0;
}

.header-icon i {
    font-size: var(--font-size-2xl);
    color: var(--accent-primary);
}

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

.header-text {
    flex: 1;
}

.header-text h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-1);
}

.header-text p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 0;
}

.close-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    transition: color var(--transition-fast) var(--ease-out);
}

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

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-base);
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal) var(--ease-out);
    cursor: pointer;
}

.btn i {
    font-size: 1.2em;
}

.btn-primary {
    background: linear-gradient(145deg, var(--accent-primary), var(--accent-secondary));
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    transition: color var(--transition-fast) var(--ease-out),
        transform var(--transition-fast) var(--ease-out);
}

.icon-btn:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.operation-form {
    width: 100%;
}

.form-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.form-layout.centered {
    max-width: 600px;
    margin: 0 auto;
    grid-template-columns: 1fr;
}

.form-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

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

.form-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.form-label i {
    color: var(--accent-primary);
}

.input-wrapper {
    width: 100%;
    border-radius: var(--border-radius-md);
    padding: var(--space-2);
}

.form-control {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    padding: var(--space-2) var(--space-3);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
}

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

.textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.monospace {
    font-family: monospace;
    letter-spacing: -0.5px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--space-4);
}

.centered {
    display: flex;
    justify-content: center;
}

.upload-container {
    position: relative;
}

.upload-area {
    padding: var(--space-6) var(--space-4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: transform var(--transition-normal) var(--ease-out);
}

.upload-area:hover {
    transform: translateY(-2px);
}

.upload-icon {
    font-size: var(--font-size-3xl);
    color: var(--accent-primary);
    margin-bottom: var(--space-2);
}

.file-upload .upload-icon {
    color: var(--accent-tertiary);
}

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

.upload-text p {
    margin-bottom: var(--space-1);
    color: var(--text-secondary);
}

.upload-browse {
    color: var(--accent-primary);
    font-weight: 500;
    cursor: pointer;
}

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

.upload-area.dragover {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.02);
    }

    100% {
        transform: scale(1);
    }
}

.preview-container,
.file-preview-container {
    display: none;
    padding: var(--space-4);
}

.preview-image {
    width: 100%;
    max-height: 250px;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--space-3);
}

.preview-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
}

.file-info {
    display: flex;
    flex-direction: column;
}

.file-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.file-size {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.remove-file {
    background: transparent;
    border: none;
    color: var(--color-error);
    font-size: var(--font-size-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1);
    border-radius: 50%;
    transition: transform var(--transition-fast) var(--ease-out);
}

.remove-file:hover {
    transform: scale(1.1);
}

.capacity-meter {
    display: none;
    margin-top: var(--space-3);
}

.capacity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.capacity-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.capacity-value {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.capacity-bar {
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    padding: 0;
}

.capacity-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-tertiary));
    border-radius: 4px;
    transition: width 0.5s var(--ease-out);
}

.results-section {
    display: none;
    margin-top: var(--space-6);
    animation: slideUp 0.5s var(--ease-out);
}

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

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

.result-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.result-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.result-image-container {
    position: relative;
    overflow: hidden;
    padding: var(--space-3);
    border-radius: var(--border-radius-md);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-image {
    max-width: 100%;
    max-height: 250px;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
}

.image-badge {
    position: absolute;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.image-badge i {
    font-size: 1.1em;
}

.result-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.key-section {
    margin-bottom: var(--space-4);
}

.key-container {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.key-field {
    flex: 1;
    padding: var(--space-2);
    border-radius: var(--border-radius-md);
}

.key-hint {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: var(--space-2);
    margin-bottom: 0;
}

.download-section {
    margin-top: var(--space-4);
}

.extraction-result {
    margin-bottom: var(--space-6);
    display: none;
}

.result-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.result-section-header i {
    font-size: var(--font-size-xl);
    color: var(--accent-primary);
}

.result-section-header h4 {
    margin-bottom: 0;
}

.extracted-text {
    padding: var(--space-4);
    max-height: 250px;
    overflow-y: auto;
    margin-bottom: var(--space-4);
    border-radius: var(--border-radius-md);
}

.extracted-text pre {
    font-family: monospace;
    font-size: var(--font-size-base);
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
    color: var(--text-primary);
    line-height: 1.6;
}

.file-details {
    padding: var(--space-4);
    border-radius: var(--border-radius-md);
}

.file-info {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.file-icon {
    font-size: var(--font-size-3xl);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-tertiary);
}

.file-meta {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.detail-row {
    display: flex;
    gap: var(--space-2);
}

.detail-label {
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 80px;
}

.detail-value {
    color: var(--text-primary);
}

.details-container {
    padding: var(--space-4);
    border-radius: var(--border-radius-md);
}

.analysis-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.analysis-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

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

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-1);
}

.section-header i {
    font-size: var(--font-size-xl);
    color: var(--accent-primary);
}

.section-header h4 {
    margin-bottom: 0;
}

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

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

.detail-item-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.detail-item-value {
    color: var(--text-primary);
    font-weight: 400;
    text-align: right;
}

.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-md);
    max-height: 350px;
    overflow-y: auto;
}

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

.exif-table th,
.exif-table td {
    padding: var(--space-3);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.exif-table th {
    font-weight: 600;
    color: var(--text-primary);
    position: sticky;
    top: 0;
    background-color: var(--bg-primary);
    z-index: var(--z-base);
}

.exif-table tr:last-child td {
    border-bottom: none;
}

.exif-table td {
    color: var(--text-secondary);
}

.app-footer {
    padding: var(--space-5) 0;
    margin-top: var(--space-8);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.footer-info p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

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

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

.footer-link {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

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

#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--space-4);
    z-index: var(--z-overlay);
}

#loading-overlay p {
    color: #ffffff;
    font-weight: 500;
    margin: 0;
}

.loader {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-inner {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    padding: var(--space-1);
    position: relative;
}

.loader-animation {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--accent-primary);
    border-right-color: var(--accent-secondary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#toast-container {
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-width: 350px;
    width: 100%;
}

.toast {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    align-items: flex-start;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
    position: relative;
}

.toast.showing {
    transform: translateX(0);
    opacity: 1;
}

.toast.removing {
    transform: translateX(120%);
    opacity: 0;
}

.toast::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

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

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

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

.toast.info::before {
    background-color: var(--accent-tertiary);
}

.toast-icon {
    padding: var(--space-4);
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.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(--accent-tertiary);
}

.toast-content {
    padding: var(--space-4);
    padding-left: 0;
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: var(--font-size-base);
    margin-bottom: var(--space-1);
    color: var(--text-primary);
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
    padding: var(--space-2);
    cursor: pointer;
    display: flex;
}

@media (max-width: 1024px) {
    :root {
        --space-8: 1.75rem;
        --space-6: 1.25rem;
    }

    .container {
        max-width: 100%;
        padding: 0 var(--space-4);
    }
}

@media (max-width: 768px) {

    .form-layout,
    .result-layout,
    .analysis-layout {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .tab-btn {
        padding: var(--space-3) var(--space-1);
    }

    .tab-btn i {
        font-size: var(--font-size-xl);
    }

    .tab-btn span {
        font-size: var(--font-size-sm);
    }

    .header-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-4);
    }

    .header-actions {
        position: absolute;
        top: var(--space-4);
        right: var(--space-4);
    }

    .header-intro h2 {
        font-size: var(--font-size-2xl);
    }

    .header-intro p {
        font-size: var(--font-size-base);
    }

    .key-container {
        flex-direction: column;
        align-items: stretch;
    }

    .key-container .icon-btn {
        align-self: flex-end;
        margin-top: var(--space-2);
    }

    .form-actions {
        justify-content: center;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    :root {
        --space-4: 0.875rem;
        --space-5: 1rem;
    }

    .header-icon {
        width: 40px;
        height: 40px;
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-2);
    }

    .footer-divider {
        display: none;
    }

    #toast-container {
        left: var(--space-4);
        right: var(--space-4);
        max-width: none;
    }

    .card-header {
        border-radius: 10px;
        flex-direction: column;
        text-align: center;
        padding-top: var(--space-6);
    }

    .header-icon {
        margin-right: 0;
        margin-bottom: var(--space-3);
    }

    .close-btn {
        top: var(--space-2);
        right: var(--space-2);
    }

    .tabs-nav {
        overflow-x: auto;
        padding-bottom: var(--space-2);
    }

    .tab-btn {
        min-width: 80px;
    }
}

.light-icon {
    display: none;
}

.dark-icon {
    display: inline-block;
}

[data-theme="light"] .light-icon {
    display: inline-block;
}

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

.hidden {
    display: none !important;
}

.mt-0 {
    margin-top: 0 !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.m-0 {
    margin: 0 !important;
}

.p-0 {
    padding: 0 !important;
}

.text-success {
    color: var(--color-success) !important;
}

.text-error {
    color: var(--color-error) !important;
}

.text-warning {
    color: var(--color-warning) !important;
}

.text-info {
    color: var(--accent-tertiary) !important;
}

.border-radius-full {
    border-radius: 9999px !important;
}

/* ===== DARK MODE SPECIFIC ENHANCEMENTS ===== */

/* Improved card styling in dark mode */
[data-theme="dark"] .neu-flat {
    background-color: var(--dark-bg-primary);
    box-shadow: 5px 5px 12px var(--dark-shadow-dark),
        -5px -5px 12px var(--dark-shadow-light);
}

/* Better button hover effects in dark mode */
[data-theme="dark"] button.neu-flat:hover:not(:disabled),
[data-theme="dark"] a.neu-flat:hover {
    box-shadow: 6px 6px 16px var(--dark-shadow-dark),
        -6px -6px 16px var(--dark-shadow-light);
    transform: translateY(-3px);
}

/* Improved inset elements for dark mode */
[data-theme="dark"] .neu-inset {
    background-color: rgba(22, 24, 36, 0.6);
    box-shadow: inset 3px 3px 5px var(--dark-shadow-dark),
        inset -2px -2px 5px var(--dark-shadow-light);
}

/* Enhanced form controls for dark mode */
[data-theme="dark"] .form-control {
    color: var(--dark-text-primary);
}

[data-theme="dark"] .form-control::placeholder {
    color: rgba(125, 135, 175, 0.5);
}

/* Gradient text effects for headers in dark mode */
[data-theme="dark"] .header-intro h2 {
    background: linear-gradient(45deg, var(--dark-accent-primary), var(--dark-accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 10px rgba(124, 93, 250, 0.3);
}

[data-theme="dark"] .header-text h3 {
    color: var(--dark-text-primary);
}


[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, var(--dark-accent-primary), var(--dark-accent-secondary));
    box-shadow: 0 4px 10px rgba(124, 93, 250, 0.3);
}

[data-theme="dark"] .btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 15px rgba(124, 93, 250, 0.4);
    transform: translateY(-3px);
}

[data-theme="dark"] ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--dark-bg-secondary);
    border-radius: 5px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--dark-accent-primary), var(--dark-accent-secondary));
    border-radius: 5px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--dark-accent-secondary), var(--dark-accent-tertiary));
}

[data-theme="dark"] .form-control:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(124, 93, 250, 0.3);
}

[data-theme="dark"] .upload-area {
    background-color: rgba(25, 28, 40, 0.5);
    box-shadow: inset 3px 3px 5px var(--dark-shadow-dark),
        inset -2px -2px 5px var(--dark-shadow-light),
        0 10px 20px rgba(10, 12, 26, 0.1);
    transition: all 0.3s ease;
}

[data-theme="dark"] .upload-area:hover {
    transform: translateY(-5px);
    box-shadow: inset 3px 3px 5px var(--dark-shadow-dark),
        inset -2px -2px 5px var(--dark-shadow-light),
        0 15px 30px rgba(10, 12, 26, 0.2);
}

[data-theme="dark"] .upload-icon {
    filter: drop-shadow(0 3px 5px rgba(124, 93, 250, 0.3));
}

[data-theme="dark"] .tab-btn.active {
    color: var(--dark-accent-primary);
}

[data-theme="dark"] .tab-btn.active i {
    color: var(--dark-accent-primary);
    filter: drop-shadow(0 3px 5px rgba(124, 93, 250, 0.3));
}

[data-theme="dark"] .tab-btn::after {
    background: linear-gradient(to right, var(--dark-accent-primary), var(--dark-accent-tertiary));
    box-shadow: 0 1px 5px rgba(124, 93, 250, 0.5);
}

[data-theme="dark"] .card-header {
    background-color: rgba(23, 24, 41, 0.7);
    border-bottom: 1px solid rgba(60, 70, 110, 0.15);
}

[data-theme="dark"] .header-icon {
    box-shadow: inset 2px 2px 4px var(--dark-shadow-dark),
        inset -2px -2px 4px var(--dark-shadow-light);
    background-color: rgba(22, 24, 36, 0.8);
}

[data-theme="dark"] .capacity-fill {
    background: linear-gradient(to right, var(--dark-accent-primary), var(--dark-accent-tertiary));
    box-shadow: 0 2px 8px rgba(124, 93, 250, 0.3);
}

[data-theme="dark"] .extracted-text {
    background-color: rgba(22, 24, 36, 0.7);
}

[data-theme="dark"] .extracted-text pre {
    color: var(--dark-text-primary);
}

[data-theme="dark"] .details-container,
[data-theme="dark"] .file-details {
    background-color: rgba(22, 24, 36, 0.7);
}

[data-theme="dark"] .icon-btn:hover {
    color: var(--dark-accent-primary);
    transform: translateY(-2px);
    filter: drop-shadow(0 3px 5px rgba(124, 93, 250, 0.3));
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    opacity: 0;
    transition: opacity var(--transition-normal) var(--ease-out);
}

.modal.active {
    display: block;
    opacity: 1;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 15, 30, 0.7);
    backdrop-filter: blur(5px);
}

.modal-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-flat);
    transition: transform var(--transition-normal) var(--ease-out);
}

.modal.active .modal-container {
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.modal-header .header-icon {
    width: 45px;
    height: 45px;
    flex-shrink: 0;
}

.modal-header .header-text {
    flex: 1;
    margin-left: var(--space-4);
}

.modal-header .header-text h3 {
    margin-bottom: var(--space-1);
}

.modal-header .header-text p {
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

.modal-header .close-btn {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
}

.modal-content {
    padding: var(--space-5);
    overflow-y: auto;
    max-height: calc(85vh - 90px);
}

.policy-content {
    padding: var(--space-5);
    overflow-y: auto;
    border-radius: var(--border-radius-md);
}

.policy-content h2 {
    color: var(--accent-primary);
    font-size: var(--font-size-xl);
    margin-top: var(--space-6);
    margin-bottom: var(--space-4);
}

.policy-content h2:first-child {
    margin-top: 0;
}

.policy-content h3 {
    font-size: var(--font-size-lg);
    margin-top: var(--space-5);
    margin-bottom: var(--space-3);
}

.policy-content h4 {
    font-size: var(--font-size-md);
    margin-top: var(--space-4);
    margin-bottom: var(--space-2);
}

.policy-content p {
    margin-bottom: var(--space-3);
}

.policy-content ul {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

.policy-content li {
    margin-bottom: var(--space-3);
    color: var(--text-secondary);
}

.policy-content a {
    color: var(--accent-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-out);
}

.policy-content a:hover {
    color: var(--accent-primary);
}

body.modal-open {
    overflow: hidden;
}

.highlight-red {
    color: var(--color-error) !important;
    font-weight: 500;
}