:root {
    --color-primary: #0052CC;
    --color-primary-hover: #0747A6;
    --color-secondary: #42526E;
    --color-success: #00875A;
    --color-danger: #DE350B;
    --color-warning: #FFAB00;
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F4F5F7;
    --color-bg-hover: #F4F5F7;
    --color-border: #DFE1E6;
    --color-text: #172B4D;
    --color-text-secondary: #6B778C;
    --color-text-inverse: #FFFFFF;
    --shadow-sm: 0 1px 3px rgba(9,30,66,0.08);
    --shadow-md: 0 4px 8px rgba(9,30,66,0.13);
    --shadow-lg: 0 8px 16px rgba(9,30,66,0.13);
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
}

.dark-theme {
    --color-primary: #579DFF;
    --color-primary-hover: #85B8FF;
    --color-secondary: #8993A4;
    --color-success: #1F845A;
    --color-danger: #E34935;
    --color-warning: #F5CD47;
    --color-bg: #161A1D;
    --color-bg-secondary: #1D2125;
    --color-bg-hover: #22272B;
    --color-border: #38414A;
    --color-text: #B6C2CF;
    --color-text-secondary: #8C9BAB;
    --color-text-inverse: #161A1D;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* Header */
.header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
}

.logo svg {
    width: 28px;
    height: 28px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-select {
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.875rem;
}

/* Toolbar */
.toolbar {
    background-color: var(--color-bg-secondary);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--color-border);
}

.search-container {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

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

.filter-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.875rem;
}

.toolbar-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: var(--radius-sm);
    background-color: transparent;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

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

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
}

.snippets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

/* Snippet Card */
.snippet-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all 0.2s;
}

.snippet-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.snippet-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.snippet-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.snippet-language {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.snippet-description {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.snippet-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.snippet-preview {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-bottom: 1rem;
    overflow: hidden;
    max-height: 150px;
}

.snippet-preview code {
    font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
    font-size: 0.875rem;
}

.snippet-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* Empty State */
.empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    color: var(--color-text-secondary);
}

.empty-state svg {
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.125rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    padding: 2rem;
    overflow-y: auto;
}

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

.modal-content {
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 700px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
}

/* Form */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

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

.form-textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

.code-editor {
    font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
}

/* Notification */
.notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background-color: var(--color-success);
    color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s;
    z-index: 2000;
}

.notification.show {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }
    
    .toolbar {
        padding: 1rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .snippets-grid {
        grid-template-columns: 1fr;
    }
    
    .search-container {
        min-width: 100%;
    }
    
    .toolbar-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .modal {
        padding: 1rem;
    }
}

/* Dark theme specific for Prism */
.dark-theme pre[class*="language-"] {
    background-color: var(--color-bg-secondary);
}

.dark-theme :not(pre) > code[class*="language-"] {
    background-color: var(--color-bg-secondary);
}