/* 全域樣式 */
:root {
    --primary-color: #5865F2;
    --secondary-color: #EB459E;
    --success-color: #3BA55D;
    --danger-color: #ED4245;
    --warning-color: #FEE75C;

    --bg-primary: #36393F;
    --bg-secondary: #2F3136;
    --bg-tertiary: #202225;
    --bg-modal: #36393F;

    --text-primary: #FFFFFF;
    --text-secondary: #B9BBBE;
    --text-muted: #72767D;

    --border-color: #202225;
    --hover-bg: #393C43;

    --online: #3BA55D;
    --idle: #FEE75C;
    --busy: #ED4245;
    --offline: #747F8D;
}

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

body {
    font-family: 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    overflow: hidden;
}

.hidden {
    display: none !important;
}

/* 登入/註冊頁面 */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.auth-box {
    background: var(--bg-modal);
    border-radius: 8px;
    padding: 32px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.24);
}

.auth-logo {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.auth-logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    font-size: 24px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 16px;
    transition: border-color 0.2s;
}

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

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

.btn-primary {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary:hover {
    background-color: #4752C4;
}

.btn-secondary {
    padding: 10px 20px;
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-secondary);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.auth-switch {
    margin-top: 16px;
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* 主應用程式佈局 */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* 社群側邊欄 */
.guilds-sidebar {
    width: 72px;
    background-color: var(--bg-tertiary);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    overflow-y: auto;
}

.guilds-sidebar::-webkit-scrollbar {
    width: 0;
}

.guild-item {
    width: 48px;
    height: 48px;
    background-color: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.guild-item:hover {
    border-radius: 16px;
    background-color: var(--primary-color);
}

.guild-item.active {
    border-radius: 16px;
    background-color: var(--primary-color);
}

.guild-item.active::before {
    content: '';
    position: absolute;
    left: -8px;
    width: 4px;
    height: 40px;
    background-color: var(--text-primary);
    border-radius: 0 4px 4px 0;
}

.guild-item.home {
    background-color: transparent;
}

.guild-item.add-guild {
    background-color: var(--bg-primary);
    color: var(--success-color);
}

.guild-item i {
    font-size: 20px;
}

.guild-item img {
    width: 100%;
    height: 100%;
    border-radius: inherit;
    object-fit: cover;
}

.guilds-separator {
    width: 32px;
    height: 2px;
    background-color: var(--bg-primary);
    margin: 8px 0;
}

.guilds-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 頻道側邊欄 */
.channels-sidebar {
    width: 240px;
    background-color: var(--bg-secondary);
    display: flex;
    flex-direction: column;
}

.guild-header {
    height: 48px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.guild-header h2 {
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.guild-actions i {
    cursor: pointer;
    padding: 4px;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.guild-actions i:hover {
    color: var(--text-primary);
}

.channels-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px 8px;
}

.channels-container::-webkit-scrollbar {
    width: 8px;
}

.channels-container::-webkit-scrollbar-thumb {
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

.channel-category {
    margin-bottom: 16px;
}

.category-header {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
}

.category-header:hover {
    color: var(--text-primary);
}

.category-header i:first-child {
    margin-right: 4px;
    font-size: 10px;
}

.category-header span {
    flex: 1;
}

.category-header i:last-child {
    opacity: 0;
    transition: opacity 0.2s;
}

.category-header:hover i:last-child {
    opacity: 1;
}

.channels-list {
    margin-top: 4px;
}

.channel-item {
    display: flex;
    align-items: center;
    padding: 6px 8px;
    margin: 2px 0;
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.channel-item:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.channel-item.active {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.channel-item i {
    margin-right: 8px;
    font-size: 18px;
}

.channel-item span {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

/* 使用者面板 */
.user-panel {
    height: 52px;
    padding: 0 8px;
    background-color: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    flex-shrink: 0;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar i {
    font-size: 16px;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-status {
    display: flex;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 4px;
}

.status-indicator.online {
    background-color: var(--online);
}

.status-indicator.away {
    background-color: var(--idle);
}

.status-indicator.busy {
    background-color: var(--busy);
}

.status-indicator.offline {
    background-color: var(--offline);
}

.user-actions {
    display: flex;
    gap: 8px;
}

.user-actions i {
    padding: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.user-actions i:hover {
    color: var(--text-primary);
}

/* 主要內容區 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
}

.channel-header {
    height: 48px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
}

.channel-info {
    display: flex;
    align-items: center;
}

.channel-info i {
    color: var(--text-secondary);
    margin-right: 8px;
    font-size: 20px;
}

.channel-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-right: 8px;
}

.channel-topic {
    font-size: 14px;
    color: var(--text-secondary);
    border-left: 1px solid var(--border-color);
    padding-left: 8px;
}

.channel-actions {
    display: flex;
    gap: 16px;
}

.channel-actions i {
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.channel-actions i:hover {
    color: var(--text-primary);
}

/* 訊息容器 */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.messages-container::-webkit-scrollbar {
    width: 8px;
}

.messages-container::-webkit-scrollbar-thumb {
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

.welcome-message {
    text-align: center;
    padding: 64px 32px;
}

.welcome-message h1 {
    font-size: 32px;
    margin-bottom: 16px;
}

.welcome-message p {
    font-size: 16px;
    color: var(--text-secondary);
}

.message {
    display: flex;
    padding: 8px 16px;
    transition: background-color 0.2s;
}

.message--pending {
    opacity: 0.55;
}

.message--pending .message-text::after {
    content: ' ⏳';
    font-size: 0.75em;
    color: var(--text-muted);
}

.message:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    flex-shrink: 0;
}

.message-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

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

.message-header {
    display: flex;
    align-items: baseline;
    margin-bottom: 4px;
}

.message-author {
    font-weight: 600;
    margin-right: 8px;
    cursor: pointer;
}

.message-author:hover {
    text-decoration: underline;
}

.message-timestamp {
    font-size: 12px;
    color: var(--text-muted);
}

.message-text {
    color: var(--text-primary);
    word-wrap: break-word;
    line-height: 1.375;
}

.message-actions {
    display: none;
    position: absolute;
    top: -12px;
    right: 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px;
}

.message:hover .message-actions {
    display: flex;
}

.message-actions i {
    padding: 4px 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.message-actions i:hover {
    color: var(--text-primary);
}

/* 訊息輸入 */
.message-input-container {
    padding: 16px;
}

.message-input {
    display: flex;
    align-items: center;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 4px;
}

.message-input input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14px;
    padding: 8px;
}

.btn-icon {
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

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

/* 小型圖示按鈕（用於成員操作等） */
.btn-icon-sm {
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 12px;
    transition: all 0.15s;
    flex-shrink: 0;
}

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

.btn-icon-sm.danger:hover {
    background-color: rgba(237, 66, 69, 0.15);
    color: var(--danger-color);
}

/* 危險按鈕 */
.btn-danger {
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.btn-danger:hover {
    background-color: #c03a3c;
}

/* 小型次要按鈕 */
.btn-sm {
    padding: 4px 10px !important;
    font-size: 12px !important;
}

/* 角色 badge */
.role-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 3px;
    vertical-align: middle;
    margin-left: 4px;
    text-transform: uppercase;
}

.role-owner {
    background-color: rgba(254, 231, 92, 0.2);
    color: var(--warning-color);
    border: 1px solid rgba(254, 231, 92, 0.4);
}

.role-admin {
    background-color: rgba(237, 66, 69, 0.2);
    color: var(--danger-color);
    border: 1px solid rgba(237, 66, 69, 0.4);
}

.role-moderator {
    background-color: rgba(88, 101, 242, 0.2);
    color: #8b9cf9;
    border: 1px solid rgba(88, 101, 242, 0.4);
}

/* 成員操作按鈕組 */
.member-actions {
    display: none;
    align-items: center;
    gap: 2px;
    margin-left: auto;
}

.member-item:hover .member-actions {
    display: flex;
}

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

/* 邀請碼顯示框 */
.invite-code-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    padding: 10px 14px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
}

.invite-code-box code {
    font-size: 16px;
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    color: var(--text-primary);
    flex: 1;
    user-select: all;
}

/* 社群設定 modal sections */
.modal-body {
    padding: 24px;
}

.settings-section {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.settings-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.settings-section-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.settings-section-title.danger {
    color: var(--danger-color);
}

.settings-section-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.settings-danger {
    background-color: rgba(237, 66, 69, 0.05);
    border-radius: 6px;
    padding: 16px;
    margin-top: 8px;
}

/* 加入社群按鈕樣式 */
.guild-item.join-guild {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

.guild-item.join-guild:hover {
    background-color: var(--primary-color);
    color: white;
    border-radius: 16px;
}

/* 成員列表 */
.members-sidebar {
    width: 240px;
    background-color: var(--bg-secondary);
    padding: 16px 8px;
    overflow-y: auto;
}

.members-sidebar::-webkit-scrollbar {
    width: 8px;
}

.members-sidebar::-webkit-scrollbar-thumb {
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

.members-header {
    padding: 0 8px;
    margin-bottom: 8px;
}

.members-header h3 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.member-item {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    margin: 2px 0;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.15s;
}

.member-item:hover {
    background-color: var(--hover-bg);
}

.member-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    position: relative;
}

.member-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.member-avatar .status-indicator {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 10px;
    height: 10px;
    border: 2px solid var(--bg-secondary);
}

.member-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* 模態視窗 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    animation: fadeIn 0.2s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--bg-modal);
    border-radius: 8px;
    width: 90%;
    max-width: 440px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.2s;
}

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

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

.modal-content.modal-large {
    max-width: 600px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close {
    color: var(--text-secondary);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

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

.modal-content form {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* 通知 */
.notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 16px 24px;
    border-radius: 8px;
    background-color: var(--bg-modal);
    color: var(--text-primary);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.24);
    z-index: 2000;
    display: none;
    animation: slideIn 0.3s;
}

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

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

.notification.show {
    display: block;
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification.error {
    border-left: 4px solid var(--danger-color);
}

.notification.info {
    border-left: 4px solid var(--primary-color);
}

/* 載入指示器 */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

/* 響應式設計 */
@media (max-width: 768px) {
    .guilds-sidebar {
        width: 60px;
    }

    .channels-sidebar {
        width: 200px;
    }

    .members-sidebar {
        display: none;
    }

    .auth-box {
        margin: 16px;
        padding: 24px;
    }
}