/* ===== CSS Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --bg-primary: hsl(240, 15%, 9%);
    --bg-secondary: hsl(240, 12%, 12%);
    --bg-tertiary: hsl(240, 10%, 16%);

    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    --accent-primary: hsl(271, 76%, 53%);
    --accent-secondary: hsl(330, 81%, 60%);
    --accent-gradient: linear-gradient(135deg, hsl(271, 76%, 53%), hsl(330, 81%, 60%));

    --text-primary: hsl(0, 0%, 98%);
    --text-secondary: hsl(0, 0%, 70%);
    --text-tertiary: hsl(0, 0%, 50%);

    --success: hsl(142, 71%, 45%);
    --warning: hsl(45, 93%, 47%);
    --error: hsl(0, 84%, 60%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 32px rgba(124, 58, 237, 0.3);

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== View Management ===== */
.view {
    display: none;
    min-height: 100vh;
    animation: fadeIn 0.3s ease-in-out;
}

.view.active {
    display: block;
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ===== Auth View ===== */
#auth-view {
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

#auth-view.active {
    display: flex;
}

#auth-view::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.2), transparent 70%);
    top: -250px;
    right: -250px;
    animation: pulse 4s ease-in-out infinite;
}

#auth-view::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.15), transparent 70%);
    bottom: -200px;
    left: -200px;
    animation: pulse 4s ease-in-out infinite 2s;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
}

.auth-container {
    position: relative;
    z-index: 1;
    max-width: 420px;
    width: 100%;
}

.logo-section {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.logo-icon {
    margin: 0 auto var(--spacing-lg);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

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

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

.logo-section h1 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

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

.auth-forms {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }

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

.auth-form h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.form-switch {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-switch a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.char-count,
.tag-count {
    position: absolute;
    right: var(--spacing-sm);
    top: 2.25rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.help-text {
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.validation-message {
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    display: none;
}

.validation-message.error {
    display: block;
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.validation-message.success {
    display: block;
    color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.validation-message.warning {
    display: block;
    color: var(--warning);
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

/* ===== Buttons ===== */
.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

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

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    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(--glass-bg);
    border-color: var(--accent-primary);
}

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

/* ===== App Header ===== */
.app-header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

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

.logo-small svg {
    flex-shrink: 0;
}

.app-title {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-tabs {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-tab {
    padding: 0.625rem 1.25rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    position: relative;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    color: var(--text-primary);
    background: var(--accent-gradient);
}

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

.user-name {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== Main Content ===== */
.app-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.page-header {
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.page-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.page-header p {
    color: var(--text-secondary);
}

/* ===== Form Sections ===== */
/* ===== Upload Container (Side-by-Side) ===== */
.upload-container {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
}

.upload-sidebar {
    flex: 0 0 400px;
    /* Left side width */
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    position: sticky;
    top: 90px;
}

.upload-main {
    flex: 1;
    min-width: 0;
}

.metadata-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

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

/* ===== Image Upload ===== */
.upload-area {
    position: relative;
    min-height: 300px;
    cursor: pointer;
}

.upload-placeholder {
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.02);
}

.upload-placeholder:hover {
    border-color: var(--accent-primary);
    background: rgba(124, 58, 237, 0.05);
}

#placeholder-active {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#placeholder-active img {
    width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

#placeholder-active .image-info {
    margin-top: var(--spacing-sm);
    font-size: 0.8rem;
    color: var(--text-tertiary);
    text-align: center;
}

.upload-placeholder svg {
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
}

.upload-placeholder p {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* Hide the old image preview if still referenced in JS */
.image-preview {
    display: none !important;
}

.btn-remove {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.btn-remove:hover {
    background: var(--error);
    border-color: var(--error);
    transform: scale(1.1);
}

.image-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

/* Bulk Results Layout */
.bulk-results-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.bulk-result-card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}

.bulk-result-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.bulk-result-card.success {
    border-left: 4px solid var(--success);
}

.bulk-result-card.error {
    border-left: 4px solid var(--error);
}

.result-card-header {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.result-thumbnail {
    width: 100px;
    height: 100px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
}

.result-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.result-main-info {
    flex: 1;
    min-width: 0;
}

.result-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: 0.5rem;
}

.result-title-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.result-section-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Tag Pills */
.tag-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-pill {
    padding: 0.25rem 0.75rem;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.tag-pill.single {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
}

.tag-pill.double {
    background: rgba(236, 72, 153, 0.1);
    border-color: rgba(236, 72, 153, 0.2);
}

/* Action Buttons within Cards */
.card-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-card-action {
    padding: 0.4rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-card-action:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    background: rgba(124, 58, 237, 0.1);
}

.result-description-text {
    font-size: 1.1rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.result-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.model-badge {
    padding: 0.125rem 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    font-family: monospace;
}

/* ===== Compliance Checklist ===== */
.compliance-checklist {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.checkbox-group {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-group label {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ===== Warning & Info Boxes ===== */
.warning-box,
.info-box {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.warning-box {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
    color: var(--warning);
}

.info-box {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: hsl(217, 91%, 60%);
}

.warning-box svg,
.info-box svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.warning-box p,
.info-box p {
    margin: 0;
    line-height: 1.6;
}

.info-box p+p {
    margin-top: var(--spacing-sm);
}

.inline-link {
    color: inherit;
    text-decoration: underline;
    font-weight: 600;
}

.inline-link:hover {
    opacity: 0.8;
}

/* Selected Files List (Pre-processing) */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.file-count-badge {
    background: var(--accent-primary);
    color: white;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

.selected-files-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 500px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.selected-file-item {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: border-color 0.2s;
}

.selected-file-item:hover {
    border-color: var(--accent-primary);
}

.selected-file-thumb {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg-tertiary);
}

.selected-file-info {
    flex: 1;
    min-width: 0;
}

.selected-file-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.95rem;
}

.selected-file-size {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* Bulk Results Layout Refinements */
.bulk-results-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.bulk-result-card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
}

.result-footer {
    display: none;
    /* Hide unnecessary footer wordings */
}

/* Scrollbar for lists */
.selected-files-list::-webkit-scrollbar {
    width: 6px;
}

.selected-files-list::-webkit-scrollbar-track {
    .selected-files-list::-webkit-scrollbar-thumb {
        background: var(--glass-border);
        border-radius: 3px;
    }

    .selected-files-list::-webkit-scrollbar-thumb:hover {
        background: var(--text-tertiary);
    }

    .metadata-list {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .metadata-item {
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-lg);
        padding: var(--spacing-lg);
        transition: all 0.2s;
    }

    .metadata-item:hover {
        border-color: var(--accent-primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }

    .metadata-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        margin-bottom: var(--spacing-md);
    }

    .metadata-title {
        font-size: 1.125rem;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: var(--spacing-xs);
    }

    .metadata-category {
        display: inline-block;
        padding: 0.25rem 0.75rem;
        background: var(--bg-tertiary);
        border-radius: var(--radius-sm);
        font-size: 0.8rem;
        color: var(--text-secondary);
        text-transform: capitalize;
    }

    .metadata-actions {
        display: flex;
        gap: var(--spacing-xs);
    }

    .btn-icon {
        width: 32px;
        height: 32px;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--bg-tertiary);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-sm);
        color: var(--text-secondary);
        cursor: pointer;
        transition: all 0.2s;
    }

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

    .metadata-tags {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-sm);
    }

    .tag {
        padding: 0.25rem 0.625rem;
        background: rgba(124, 58, 237, 0.15);
        border: 1px solid rgba(124, 58, 237, 0.3);
        border-radius: var(--radius-sm);
        font-size: 0.8rem;
        color: var(--accent-primary);
    }

    .metadata-description {
        color: var(--text-secondary);
        font-size: 0.9rem;
    }

    .empty-state {
        text-align: center;
        padding: var(--spacing-2xl);
        color: var(--text-tertiary);
    }

    .empty-state svg {
        margin-bottom: var(--spacing-md);
        opacity: 0.5;
    }

    opacity: 0.5;
}

.empty-state p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.empty-state span {
    font-size: 0.9rem;
}

/* ===== Guidelines ===== */
.guidelines-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.guideline-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.guideline-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.spec-item {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    text-align: center;
}

.spec-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xs);
}

.spec-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.policy-item {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.policy-item:last-child {
    margin-bottom: 0;
}

.policy-item.prohibited {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.policy-item.required {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.policy-item h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.policy-item ul {
    list-style: none;
    padding: 0;
}

.policy-item li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
}

.policy-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--text-tertiary);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

.tip-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.tip-card h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tip-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Toast Notifications ===== */
#toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

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

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--error);
}

.toast.warning {
    border-left: 3px solid var(--warning);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-tabs {
        width: 100%;
        justify-content: space-between;
    }

    .header-actions {
        justify-content: space-between;
    }

    .app-main {
        padding: var(--spacing-lg);
    }

    .page-header {
        flex-direction: column;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

    .spec-grid,
    .tips-grid {
        grid-template-columns: 1fr;
    }

    #toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
    }

    .toast {
        min-width: auto;
    }
}

/* ===== V2 Additional Styles ===== */

/* AI Configuration Section */
.ai-config-section {
    border: 2px solid rgba(124, 58, 237, 0.3);
}

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

.section-header h3 {
    margin-bottom: 0;
}

.btn-toggle {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.ai-config-content {
    margin-top: var(--spacing-lg);
}

.ai-config-content.hidden {
    display: none;
}

/* AI Generate Button */
.btn-ai {
    width: 100%;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, hsl(271, 76%, 53%), hsl(330, 81%, 60%));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
}

.btn-ai:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.5);
}

.btn-ai:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-ai svg {
    animation: rotate 2s linear infinite paused;
}

.btn-ai:not(:disabled):hover svg {
    animation-play-state: running;
}

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

    to {
        transform: rotate(360deg);
    }
}

/* Copy Buttons */
.label-with-copy {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-copy {
    padding: 0.25rem 0.5rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

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

.btn-copy.copied {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.btn-copy-inline {
    padding: 0.25rem 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-copy-inline:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* Word Count */
.word-count {
    position: absolute;
    right: var(--spacing-sm);
    top: 2.25rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

/* Bulk Upload */
.bulk-upload-area {
    position: relative;
    min-height: 250px;
    cursor: pointer;
}

.bulk-upload-area .upload-placeholder {
    border: 2px dashed var(--accent-primary);
    background: rgba(124, 58, 237, 0.05);
}

.bulk-progress {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.bulk-progress.hidden {
    display: none;
}

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

.progress-header h3 {
    margin: 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
    width: 0%;
}

.bulk-results {
    margin-top: var(--spacing-xl);
}

.bulk-results.hidden {
    display: none;
}

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

.bulk-results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.bulk-result-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

.bulk-result-card.success {
    border-color: rgba(34, 197, 94, 0.3);
    background: rgba(34, 197, 94, 0.05);
}

.bulk-result-card.error {
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.05);
}

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

.result-icon {
    font-size: 1.5rem;
    font-weight: bold;
}

.result-filename {
    font-weight: 600;
    color: var(--text-primary);
}

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

.metadata-field {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.metadata-field strong {
    color: var(--text-secondary);
    margin-right: var(--spacing-md);
}

.result-error {
    color: var(--error);
    font-size: 0.875rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-lg);
}

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

.loading-overlay p {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 500;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-tabs {
        width: 100%;
        overflow-x: auto;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }

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