.select2-container--default .select2-selection--single {
    height: 42px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    font-size: 14px
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    line-height: 28px;
    color: var(--text-primary);
    padding-left: 0
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 40px
}

.select2-container--default .select2-selection--single .select2-selection__placeholder {
    color: var(--text-muted)
}

.select2-dropdown {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md)
}

.select2-container--default .select2-results__option--highlighted[aria-selected] {
    background: var(--primary-color)
}

.select2-container--default .select2-results__option {
    padding: 10px 12px;
    color: var(--text-primary)
}

.select2-container--default .select2-search--dropdown .select2-search__field {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px
}

body.dark-mode .select2-container--default .select2-selection--single {
    background: var(--bg-primary);
    border-color: var(--border-color)
}

body.dark-mode .select2-dropdown {
    background: var(--bg-card);
    border-color: var(--border-color)
}

body.dark-mode .select2-container--default .select2-search--dropdown .select2-search__field {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary)
}

body.dark-mode .select2-container--default .select2-results__option {
    background: var(--bg-card)
}

body.dark-mode .select2-container--default .select2-results__option--highlighted[aria-selected] {
    background: var(--primary-color)
}

:root {
    --primary-color: #4CAF50;
    --primary-hover: #45a049;
    --primary-active: #2a832d;
    --secondary-color: #2196F3;
    --secondary-hover: #1976D2;
    --bg-primary: #f5f7fa;
    --bg-secondary: #fff;
    --bg-card: #fff;
    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #888;
    --border-color: #e8e8e8;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --spacing-xs: 6px;
    --spacing-sm: 10px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --success-bg: #e8f5e9;
    --success-color: #2e7d32;
    --error-bg: #ffebee;
    --error-color: #c62828;
    --warning-color: #FF9800;
    --info-color: #2196F3;
    --transition-fast: 0.2s ease
}

body.dark-mode {
    --bg-primary: #1a1d23;
    --bg-secondary: #242830;
    --bg-card: #2a2f38;
    --text-primary: #e8e8e8;
    --text-secondary: #aaa;
    --text-muted: #777;
    --border-color: #3a3f48;
    --primary-color: #00ADB5;
    --primary-hover: #00CED1;
    --primary-active: #009DAE;
    --secondary-color: #00ADB5;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
    --success-bg: rgba(0, 173, 181, 0.15);
    --success-color: #00CED1;
    --error-bg: rgba(255, 82, 82, 0.15);
    --error-color: #ff5252
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh
}

a {
    text-decoration: none
}

.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    min-height: 100vh
}

.app-header {
    margin-bottom: var(--spacing-lg)
}

.logo-title-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md)
}

.app-logo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: -8px 5px 10px rgba(0, 0, 0, 0.5);
    transition: transform var(--transition-fast)
}

.app-logo:active {
    transform: scale(0.95)
}

body.dark-mode .app-logo {
    box-shadow: -8px 5px 10px rgba(0, 173, 181, 0.75)
}

.title {
    font-size: 20px;
    font-weight: 700;
    margin: 0
}

body.dark-mode .title {
    color: var(--primary-color)
}

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

.nav-btn {
    flex: 1;
    min-width: 0;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    background: var(--primary-color);
    color: #fff;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px
}

.nav-btn:active {
    background: var(--primary-active)
}

body.dark-mode .nav-btn {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color)
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-md);
    overflow: hidden
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px var(--spacing-md);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color)
}

body.dark-mode .card-header {
    background: rgba(0, 173, 181, 0.08)
}

.card-icon {
    width: 26px;
    height: 26px;
    background: rgba(76, 175, 80, 0.1);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center
}

.card-icon i {
    color: var(--primary-color);
    font-size: 13px
}

body.dark-mode .card-icon {
    background: rgba(0, 173, 181, 0.15)
}

.card-title {
    font-size: 14px;
    font-weight: 600
}

.card-body {
    padding: var(--spacing-md)
}

.form-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md)
}

.form-row:last-child {
    margin-bottom: 0
}

.form-group {
    flex: 1;
    margin-bottom: var(--spacing-md)
}

.form-group:last-child {
    margin-bottom: 0
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px
}

body.dark-mode .form-label {
    color: var(--text-primary)
}

.form-input,
.form-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast)
}

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

body.dark-mode .form-input,
body.dark-mode .form-select {
    background: var(--bg-primary);
    border-color: var(--border-color)
}

.form-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px
}

.btn {
    padding: 10px 16px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px
}

.btn:active {
    background: var(--primary-active)
}

.btn-block {
    width: 100%
}

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

.btn-warning {
    background: var(--warning-color)
}

.btn-info {
    background: var(--info-color)
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color)
}

.btn-outline:active {
    background: var(--primary-color);
    color: #fff
}

body.dark-mode .btn-outline {
    border-color: var(--primary-color);
    color: var(--primary-color)
}

body.dark-mode .btn-outline:active {
    background: var(--primary-color);
    color: #fff
}

.btn-sm {
    padding: 8px 12px;
    font-size: 12px
}

.btn-row {
    display: flex;
    gap: var(--spacing-sm)
}

.btn-row .btn {
    flex: 1
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm)
}

.actions-grid .btn {
    padding: 12px 10px;
    font-size: 12px
}

.result-box {
    margin-top: var(--spacing-md);
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    display: none
}

.result-box.visible {
    display: block
}

.result-box.success {
    background: var(--success-bg);
    color: var(--success-color);
    border: 1px solid var(--success-color)
}

.result-box.error {
    background: var(--error-bg);
    color: var(--error-color);
    border: 1px solid var(--error-color)
}

.result-box.info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--info-color);
    border: 1px solid var(--info-color)
}

body.dark-mode .result-box.success {
    background: rgba(0, 173, 181, 0.1);
    border-color: var(--primary-color)
}

body.dark-mode .result-box.info {
    background: rgba(0, 173, 181, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color)
}

.file-input-wrapper {
    position: relative;
    overflow: hidden;
    width: 100%
}

.file-input-wrapper input[type=file] {
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%
}

.file-input-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-fast)
}

.file-input-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color)
}

body.dark-mode .file-input-btn {
    background: var(--bg-card)
}

.preview-container {
    margin-top: var(--spacing-md);
    text-align: center;
    position: relative;
    display: inline-block
}

.preview-wrapper {
    position: relative;
    display: inline-block
}

.preview-img {
    max-width: 160px;
    max-height: 160px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-color);
    display: none
}

.preview-img.visible {
    display: inline-block
}

body.dark-mode .preview-img {
    border-color: var(--primary-color)
}

.preview-close {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 14px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1
}

.preview-wrapper:hover .preview-close {
    opacity: 1
}

.preview-close.always-show {
    opacity: 1
}

.current-avatar-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-primary);
    border-radius: var(--radius-sm)
}

.current-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    object-fit: cover;
    display: none
}

.current-avatar.visible {
    display: block
}

body.dark-mode .current-avatar {
    border-color: var(--primary-color)
}

.current-avatar-info {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary)
}

.current-avatar-label {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px
}

.key-select-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm)
}

.key-select-row .form-select {
    flex: 1
}

.key-select-row .btn {
    flex: 0 0 auto
}

@media (hover:hover) {
    .app-logo:hover {
        transform: scale(1.05)
    }

    .nav-btn:hover {
        background: var(--primary-hover)
    }

    body.dark-mode .nav-btn:hover {
        background: var(--primary-color);
        color: #fff
    }

    .btn:hover {
        background: var(--primary-hover)
    }

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

    .btn-warning:hover {
        background: #e68a00
    }

    .btn-info:hover {
        background: var(--secondary-hover)
    }

    .btn-outline:hover {
        background: var(--primary-color);
        color: #fff
    }

    body.dark-mode .btn:hover {
        background: var(--primary-hover);
        color: #fff
    }

    body.dark-mode .btn-secondary:hover {
        background: #4fc3f7;
        color: #fff
    }

    body.dark-mode .btn-warning:hover {
        background: #ffb74d;
        color: #fff
    }

    body.dark-mode .btn-info:hover {
        background: #4fc3f7;
        color: #fff
    }

    body.dark-mode .btn-outline:hover {
        background: var(--primary-color);
        color: #fff
    }
}

@media (min-width:768px) {
    .container {
        max-width: 640px;
        margin: var(--spacing-lg) auto;
        padding: var(--spacing-xl);
        border-radius: var(--radius-lg);
        min-height: auto;
        box-shadow: var(--shadow-md)
    }

    .app-logo {
        width: 52px;
        height: 52px
    }

    .title {
        font-size: 22px
    }

    .nav-btn {
        flex: none;
        padding: 10px 18px;
        font-size: 13px
    }

    .card {
        margin-bottom: var(--spacing-lg)
    }

    .actions-grid {
        grid-template-columns: repeat(3, 1fr)
    }
}