:root {
    --primary: #B82E2A;
    --primary-dark: #961F1C;
    --primary-light: #D94542;
    --primary-bg: rgba(184, 46, 42, 0.08);
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --danger: #DC2626;
    --success: #059669;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-outline:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
}

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

.btn-danger:hover {
    background: #B91C1C;
    color: var(--white);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Header */
.main-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

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

.logo a {
    color: inherit;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-btn, .user-btn-sm {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-right {
    right: 0;
    left: auto;
}

.dropdown-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.dropdown-header strong {
    display: block;
    color: var(--gray-800);
}

.dropdown-header small {
    color: var(--gray-500);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-100);
    margin: 0.25rem 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    color: var(--gray-700);
    font-size: 0.875rem;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--gray-50);
    color: var(--primary);
}

/* Dashboard */
.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.dashboard-hero {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    color: var(--white);
    margin-bottom: 2rem;
}

.dashboard-hero h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.dashboard-hero p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    font-size: 1.25rem;
    color: var(--gray-800);
}

.doc-count {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--gray-300);
}

.empty-state i {
    font-size: 3rem;
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.empty-state h3 {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.document-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

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

.doc-preview {
    width: 100%;
    height: 80px;
    background: var(--gray-50);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.doc-preview i {
    font-size: 2rem;
    color: var(--primary);
}

.doc-info h3 {
    font-size: 0.9375rem;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-date {
    font-size: 0.75rem;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 500;
}

.badge-shared {
    background: var(--primary-bg);
    color: var(--primary);
    margin-top: 0.5rem;
}

.doc-actions {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: flex;
    gap: 0.25rem;
    opacity: 0;
    transition: var(--transition);
}

.document-card:hover .doc-actions {
    opacity: 1;
}

.action-btn {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: var(--white);
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.action-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.delete-btn:hover {
    background: var(--danger) !important;
}

/* Features */
.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Auth Pages */
.auth-page {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-50) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

.auth-header h1 {
    color: var(--gray-800);
    font-size: 1.5rem;
}

.auth-header p {
    color: var(--gray-500);
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.alert-error {
    background: #FEF2F2;
    color: var(--danger);
    border: 1px solid #FECACA;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group label i {
    color: var(--gray-400);
    width: 1rem;
}

.form-group input {
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.password-input {
    position: relative;
}

.password-input input {
    width: 100%;
    padding-right: 2.5rem;
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    padding: 0.25rem;
}

.toggle-password:hover {
    color: var(--gray-600);
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.auth-footer p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Editor */
.editor-page {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.editor-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.back-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: var(--transition);
    flex-shrink: 0;
}

.back-btn:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.doc-title-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.doc-title-input {
    border: none;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-800);
    padding: 0.375rem 0.5rem;
    border-radius: var(--radius);
    background: transparent;
    flex: 1;
    min-width: 0;
}

.doc-title-input:focus {
    outline: none;
    background: var(--gray-50);
}

.save-status {
    font-size: 0.75rem;
    color: var(--gray-500);
    white-space: nowrap;
    flex-shrink: 0;
}

.save-status.saved {
    color: var(--success);
}

.save-status.saving {
    color: var(--primary);
}

.save-status.error {
    color: var(--danger);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.125rem;
    padding: 0.25rem;
    background: var(--gray-50);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
}

.tool-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    transition: var(--transition);
}

.tool-btn:hover {
    background: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.tool-btn small {
    font-size: 0.625rem;
    margin-left: 1px;
}

.toolbar-divider {
    width: 1px;
    height: 20px;
    background: var(--gray-300);
    margin: 0 0.25rem;
}

/* Editor Main */
.editor-main {
    flex: 1;
    overflow-y: auto;
    background: var(--gray-100);
    padding: 2rem;
}

.editor-container {
    max-width: 816px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    min-height: calc(100vh - 200px);
}

.editor-content {
    padding: 3rem 4rem;
    min-height: 600px;
    outline: none;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--gray-800);
}

.editor-content:focus {
    outline: none;
}

.editor-content h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.editor-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.editor-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.editor-content p {
    margin-bottom: 1rem;
}

.editor-content ul, .editor-content ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.editor-content a {
    color: var(--primary);
    text-decoration: underline;
}

.editor-content hr {
    border: none;
    border-top: 2px solid var(--gray-200);
    margin: 1.5rem 0;
}

/* View Page */
.view-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.view-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.doc-title-display h1 {
    font-size: 1rem;
    color: var(--gray-800);
}

.doc-owner {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.badge-view-only {
    background: var(--gray-100);
    color: var(--gray-600);
}

.view-main {
    flex: 1;
    background: var(--gray-100);
    padding: 2rem;
}

.view-container {
    max-width: 816px;
    margin: 0 auto;
}

.view-content {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 3rem 4rem;
    line-height: 1.8;
    min-height: 400px;
}

.view-content h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.view-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.view-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.view-content p {
    margin-bottom: 1rem;
}

.view-content ul, .view-content ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.view-footer {
    text-align: center;
    padding: 1rem;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    color: var(--gray-500);
    font-size: 0.8125rem;
}

/* Share Page */
.share-page {
    background: var(--gray-50);
    min-height: 100vh;
}

.share-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.share-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.share-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.share-header i {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.share-header h1 {
    font-size: 1.5rem;
}

.share-header p {
    opacity: 0.9;
    font-size: 0.875rem;
}

.share-section {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--gray-100);
}

.share-section:last-of-type {
    border-bottom: none;
}

.share-section h3 {
    color: var(--gray-800);
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.share-description {
    color: var(--gray-500);
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
}

.share-link-box {
    display: flex;
    gap: 0.5rem;
}

.share-url-input {
    flex: 1;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.8125rem;
    color: var(--gray-700);
    background: var(--gray-50);
    font-family: monospace;
}

.share-url-input:focus {
    outline: none;
    border-color: var(--primary);
}

.share-actions {
    margin-top: 0.75rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.info-item {
    background: var(--gray-50);
    padding: 0.75rem;
    border-radius: var(--radius);
}

.info-label {
    display: block;
    font-size: 0.6875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: 0.8125rem;
    color: var(--gray-800);
    font-family: monospace;
    word-break: break-all;
}

.embed-code {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: monospace;
    font-size: 0.75rem;
    resize: vertical;
    background: var(--gray-50);
}

.embed-code:focus {
    outline: none;
    border-color: var(--primary);
}

.share-footer {
    padding: 1.5rem 2rem;
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content h3 {
    color: var(--gray-800);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-content h3 i {
    color: var(--danger);
}

.modal-content p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Error Page */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--gray-50);
}

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

.error-card {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.error-card i {
    color: var(--gray-300);
    margin-bottom: 1rem;
}

.error-card h1 {
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.error-card p {
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--gray-500);
    font-size: 0.8125rem;
    border-top: 1px solid var(--gray-200);
    background: var(--white);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .toolbar {
        display: none;
    }
    
    .editor-content {
        padding: 1.5rem;
    }
    
    .view-content {
        padding: 1.5rem;
    }
    
    .share-link-box {
        flex-direction: column;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
    }
    
    .features-section {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .view-header, .view-footer {
        display: none;
    }
    
    .view-main {
        padding: 0;
    }
    
    .view-content {
        box-shadow: none;
        padding: 0;
    }
}