:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #1f6feb;
    --success: #238636;
    --error: #da3633;
    --border: #30363d;
    --shadow: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #ffffff;
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --accent: #0969da;
    --accent-hover: #0550ae;
    --success: #1a7f37;
    --error: #cf222e;
    --border: #d0d7de;
    --shadow: rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.02em;
}

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

.logo a:hover h1 {
    color: var(--accent);
}

.accent {
    color: var(--text-secondary);
    font-weight: 400;
}

.tagline {
    display: none;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Main Editor Section */
.editor-section {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.5rem;
}

.editor-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.title-input {
    flex: 1;
    min-width: 200px;
    padding: 0.625rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.title-input:focus {
    outline: none;
    border-color: var(--accent);
}

.options {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.select-box {
    padding: 0.625rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.select-box:hover,
.select-box:focus {
    border-color: var(--accent);
    outline: none;
}

/* Textarea */
#content {
    width: 100%;
    min-height: 400px;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.2s ease;
}

#content:focus {
    outline: none;
    border-color: var(--accent);
}

/* Editor Footer */
.editor-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.extra-options {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.password-input {
    padding: 0.625rem 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color 0.2s ease;
    width: 200px;
}

.password-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

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

.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    padding: 0.625rem 1rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-icon {
    padding: 0.5rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
    color: var(--text-secondary);
}

.btn-icon:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-arrow {
    font-size: 1rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2rem;
    max-width: 600px;
    width: 90%;
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

.result-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.link-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.link-container input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: monospace;
}

.copy-btn {
    padding: 0.875rem 1.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    border-color: var(--accent);
    background: var(--accent);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* View Section */
.view-section {
    flex: 1;
}

.paste-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.paste-info h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.meta-info {
    display: flex;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.paste-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.code-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.code-container pre {
    margin: 0;
    padding: 1.5rem;
    overflow-x: auto;
}

.code-container code {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

.burn-notice {
    margin-top: 2rem;
    padding: 1rem 1.5rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #ef4444;
}

.burn-notice span {
    font-size: 1.5rem;
}

/* Error Section */
.error-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-content {
    max-width: 400px;
}

.error-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 1rem;
}

.error-content h2 {
    margin-bottom: 1rem;
    font-size: 2rem;
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    z-index: 2000;
    font-size: 0.9rem;
}

.toast.success {
    border-color: var(--success);
    color: var(--success);
}

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

/* Footer */
footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--accent-hover);
}

.stats {
    margin-top: 0.5rem;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .logo h1 {
        font-size: 2rem;
    }

    .editor-section {
        padding: 1.5rem;
    }

    .editor-header {
        flex-direction: column;
    }

    .options {
        width: 100%;
    }

    .select-box {
        flex: 1;
    }

    .editor-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .extra-options {
        flex-direction: column;
        gap: 1rem;
    }

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

    .paste-header {
        flex-direction: column;
    }

    .paste-actions {
        width: 100%;
    }

    .modal-content {
        padding: 1.5rem;
    }

    .modal-actions {
        flex-direction: column;
    }
}