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

:root {
    --primary-color: #1a73e8;
    --primary-hover: #1557b0;
    --secondary-color: #5f6368;
    --background: #ffffff;
    --surface: #f8f9fa;
    --border: #dadce0;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --error: #d93025;
    --success: #137333;
    --shadow: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
    --shadow-hover: 0 1px 3px 0 rgba(60, 64, 67, 0.3), 0 4px 8px 3px rgba(60, 64, 67, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--surface);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

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

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: var(--background);
    border-bottom: 1px solid var(--border);
    height: 64px;
    box-shadow: var(--shadow);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    user-select: none;
}

.menu-button:hover {
    background-color: rgba(60, 64, 67, 0.1);
    transform: scale(1.05);
}

.menu-button:active {
    transform: scale(0.95);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--primary-color);
}

.logo svg {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 22px;
    font-weight: 400;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--surface);
    border-radius: 24px;
    padding: 8px 16px;
    gap: 12px;
    border: 1px solid transparent;
    transition: all 0.2s;
    max-width: 720px;
    flex: 1;
}

.search-box:focus-within {
    background-color: var(--background);
    border-color: var(--border);
    box-shadow: var(--shadow);
}

.search-box svg {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.search-box input {
    border: none;
    background: none;
    outline: none;
    flex: 1;
    font-size: 16px;
    color: var(--text-primary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 256px;
    background-color: var(--background);
    border-right: 1px solid var(--border);
    padding: 8px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.compose-button {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    margin: 8px 0;
    box-shadow: var(--shadow);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    position: relative;
    overflow: hidden;
}

.compose-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.compose-button:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-hover);
    transform: translateY(-1px);
}

.compose-button:active {
    transform: translateY(0);
}

.compose-button:active::before {
    width: 300px;
    height: 300px;
}

.compose-button svg {
    width: 24px;
    height: 24px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    margin-top: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 0 24px 24px 0;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
    cursor: pointer;
    user-select: none;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background-color: var(--primary-color);
    border-radius: 0 2px 2px 0;
    transition: height 0.2s ease;
}

.nav-item:hover {
    background-color: rgba(60, 64, 67, 0.08);
    padding-left: 20px;
}

.nav-item.active {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
    font-weight: 500;
    padding-left: 20px;
}

.nav-item.active::before {
    height: 24px;
}

.nav-item svg {
    width: 20px;
    height: 20px;
}

/* Email Content */
.email-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--background);
    position: relative;
    overflow: hidden;
}

/* Email List */
.email-list-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.email-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.email-list-header h2 {
    font-size: 20px;
    font-weight: 400;
    color: var(--text-primary);
}

.refresh-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    user-select: none;
}

.refresh-button:hover {
    background-color: rgba(60, 64, 67, 0.1);
    transform: rotate(180deg);
}

.refresh-button:active {
    transform: rotate(360deg);
}

.email-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.email-item {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    animation: slideIn 0.3s ease-out;
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.email-item:hover {
    background-color: rgba(60, 64, 67, 0.05);
    transform: translateX(4px);
    box-shadow: -2px 0 4px rgba(0, 0, 0, 0.05);
}

.email-item:active {
    transform: translateX(2px);
}

.email-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex: 1;
    min-width: 0;
}

.email-item-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.email-to {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
}

.email-subject {
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.email-date {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.email-item-actions {
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.2s;
    flex-shrink: 0;
    align-items: center;
}

.email-item:hover .email-item-actions {
    opacity: 1;
}

.view-email-btn,
.delete-email-btn {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    width: 32px;
    height: 32px;
}

.view-email-btn:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
}

.delete-email-btn:hover {
    background-color: rgba(217, 48, 37, 0.1);
    color: var(--error);
}

.edit-draft-btn,
.delete-draft-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

.edit-draft-btn:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
    transform: scale(1.1);
}

.edit-draft-btn:active {
    transform: scale(0.95);
}

.delete-draft-btn:hover {
    background-color: rgba(217, 48, 37, 0.1);
    color: var(--error);
    transform: scale(1.1);
}

.delete-draft-btn:active {
    transform: scale(0.95);
}

.loading {
    padding: 48px;
    text-align: center;
    color: var(--text-secondary);
    position: relative;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 12px;
    vertical-align: middle;
}

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

.empty-list,
.error {
    padding: 48px;
    text-align: center;
    color: var(--text-secondary);
    animation: fadeIn 0.3s ease-out;
}

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

.error {
    color: var(--error);
}

/* Compose Modal */
.compose-modal {
    position: absolute;
    bottom: 0;
    right: 16px;
    width: 600px;
    max-height: 80vh;
    background-color: var(--background);
    border-radius: 8px 8px 0 0;
    box-shadow: var(--shadow-hover);
    display: none;
    flex-direction: column;
    z-index: 1000;
    transform: translateY(100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.compose-modal.active {
    display: flex;
    transform: translateY(0);
    opacity: 1;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.compose-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.compose-header h2 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.close-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.close-button:hover {
    background-color: rgba(60, 64, 67, 0.1);
}

.compose-form {
    display: flex;
    flex-direction: column;
    padding: 16px;
    gap: 16px;
    overflow-y: auto;
    flex: 1;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    background-color: var(--background);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 200px;
}

/* Email input wrapper */
.email-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Autocomplete */
.autocomplete-wrapper {
    position: relative;
    flex: 1;
}

.contact-name-display {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 150px;
    padding: 8px 12px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    flex-shrink: 0;
}

.contact-name-text {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    min-height: 20px;
    display: flex;
    align-items: center;
}

.contact-name-text:empty::before {
    content: 'No name set';
    color: var(--text-secondary);
    font-weight: normal;
    font-style: italic;
}

.name-edit-btn {
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 4px;
}

.name-edit-btn:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
}

.name-edit-btn:active {
    background-color: rgba(26, 115, 232, 0.2);
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: var(--shadow-hover);
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    margin-top: 4px;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.autocomplete-dropdown.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: slideDownFadeIn 0.2s ease-out;
}

@keyframes slideDownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.autocomplete-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

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

.autocomplete-item:hover,
.autocomplete-item.selected {
    background-color: rgba(26, 115, 232, 0.1);
}

.autocomplete-content {
    flex: 1;
    min-width: 0;
}

/* Name edit modal */
.name-edit-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.2s ease-out;
}

.name-edit-dialog {
    background: var(--background);
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    width: 90%;
    max-width: 400px;
    animation: slideUp 0.3s ease-out;
}

.name-edit-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.name-edit-header h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
}

.name-edit-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.name-edit-close:hover {
    background-color: rgba(60, 64, 67, 0.1);
}

.name-edit-body {
    padding: 16px;
}

.name-edit-email {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding: 8px;
    background-color: var(--surface);
    border-radius: 4px;
}

.name-edit-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    background-color: var(--background);
    transition: border-color 0.2s;
}

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

.name-edit-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.name-edit-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    padding: 16px;
    border-top: 1px solid var(--border);
}

.autocomplete-item {
    animation: slideInItem 0.2s ease-out backwards;
}

@keyframes slideInItem {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

/* Email view modal */
.email-view-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.2s ease-out;
    backdrop-filter: blur(4px);
}

.email-view-dialog {
    background: var(--background);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease-out;
    overflow: hidden;
}

.email-view-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(to bottom, var(--background), var(--surface));
}

.email-view-header h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
    line-height: 1.4;
}

.email-view-close {
    background: none;
    border: none;
    font-size: 32px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
    line-height: 1;
}

.email-view-close:hover {
    background-color: rgba(60, 64, 67, 0.1);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.email-view-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
    background: var(--background);
}

.email-view-field {
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--text-primary);
    padding: 12px;
    background: var(--surface);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.email-view-field strong {
    color: var(--text-secondary);
    margin-right: 12px;
    font-weight: 600;
    display: inline-block;
    min-width: 60px;
}

.email-view-content {
    margin-top: 24px;
    padding: 24px;
    background-color: var(--surface);
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
    min-height: 200px;
}

.email-view-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 8px 0;
}

.email-view-content p {
    margin: 0 0 12px 0;
}

.email-view-content p:last-child {
    margin-bottom: 0;
}

.email-view-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 20px 24px;
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.autocomplete-name {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 2px;
}

.autocomplete-email {
    font-size: 13px;
    color: var(--text-secondary);
}

.autocomplete-edit {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s;
    flex-shrink: 0;
}

.autocomplete-item:hover .autocomplete-edit {
    opacity: 1;
}

.autocomplete-edit:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
}

/* Rich Text Editor */
.editor-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 4px 4px 0 0;
    flex-wrap: wrap;
}

.toolbar-btn {
    background: none;
    border: 1px solid transparent;
    padding: 6px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
}

.toolbar-btn:hover {
    background-color: rgba(60, 64, 67, 0.1);
    border-color: var(--border);
}

.toolbar-btn:active {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
}

.toolbar-separator {
    width: 1px;
    height: 20px;
    background-color: var(--border);
    margin: 0 4px;
}

.toolbar-select {
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background-color: var(--background);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.toolbar-select:hover {
    border-color: var(--primary-color);
}

.toolbar-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.editor-container {
    border: 1px solid var(--border);
    border-radius: 0 0 4px 4px;
    background-color: var(--background);
}

.rich-text-editor {
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
    padding: 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--text-primary);
    line-height: 1.6;
    outline: none;
}

.rich-text-editor:empty:before {
    content: attr(placeholder);
    color: var(--text-secondary);
    pointer-events: none;
}

.rich-text-editor.placeholder:empty:before {
    content: attr(placeholder);
    color: var(--text-secondary);
}

.rich-text-editor:focus {
    outline: none;
}

.rich-text-editor p {
    margin: 0 0 8px 0;
}

.rich-text-editor p:last-child {
    margin-bottom: 0;
}

.rich-text-editor ul,
.rich-text-editor ol {
    margin: 8px 0;
    padding-left: 24px;
}

.rich-text-editor li {
    margin: 4px 0;
    line-height: 1.6;
}

.rich-text-editor ul li {
    list-style-type: disc;
}

.rich-text-editor ol li {
    list-style-type: decimal;
}

.rich-text-editor font[size] {
    display: inline;
}

.rich-text-editor h1,
.rich-text-editor h2,
.rich-text-editor h3,
.rich-text-editor h4,
.rich-text-editor h5,
.rich-text-editor h6 {
    margin: 12px 0 8px 0;
    font-weight: 600;
}

.rich-text-editor h2 {
    font-size: 20px;
}

/* Sidebar collapse */
.sidebar.collapsed {
    width: 64px;
}

.sidebar.collapsed .compose-button span,
.sidebar.collapsed .nav-item span {
    display: none;
}

.sidebar.collapsed .compose-button {
    justify-content: center;
    padding: 12px;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: 8px;
}

.form-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.btn-primary,
.btn-secondary {
    padding: 10px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    position: relative;
    overflow: hidden;
}

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

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

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

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

.btn-secondary:hover {
    background-color: rgba(26, 115, 232, 0.1);
    transform: translateY(-1px);
}

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

.status-message {
    padding: 12px 16px;
    margin: 0 16px 16px;
    border-radius: 4px;
    font-size: 14px;
    display: none;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.status-message.success {
    display: block;
    background-color: #e6f4ea;
    color: var(--success);
    border: 1px solid #c2e7d0;
}

.status-message.error {
    display: block;
    background-color: #fce8e6;
    color: var(--error);
    border: 1px solid #f9ab00;
}

/* Empty State */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 48px;
}

.empty-state-content {
    text-align: center;
    color: var(--text-secondary);
}

.empty-state-content svg {
    margin-bottom: 24px;
    color: var(--text-secondary);
}

.empty-state-content h2 {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.empty-state-content p {
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }

    .compose-modal {
        width: calc(100% - 32px);
        right: 16px;
        left: 16px;
        max-height: 90vh;
    }

    .search-box {
        display: none;
    }
}