:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #252525;
    --bg-tertiary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #404040;
    --accent-color: #4a90e2;
    --accent-hover: #5a9ff2;
}

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

body, html {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100%;
    overflow: hidden;
}

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

.nav-bar {
    background-color: var(--bg-secondary);
    padding: 0.75rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.nav-btn {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
    min-width: 40px;
}

.nav-btn:hover:not(:disabled) {
    background-color: var(--accent-color);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#urlBar {
    flex: 1;
    padding: 0.5rem 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
}

#urlBar:focus {
    border-color: var(--accent-color);
}

.go-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 0.5rem 1.5rem;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

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

.loading-screen {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 1000;
}

.loading-screen.hidden {
    display: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-screen p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.proxy-frame {
    flex: 1;
    width: 100%;
    border: none;
    background-color: white;
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.proxy-form {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

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

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

textarea {
    font-family: 'Courier New', monospace;
    resize: vertical;
}

.btn-primary,
.btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
    font-weight: 500;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    width: 100%;
}

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

.btn-primary:disabled {
    background-color: var(--border-color);
    cursor: not-allowed;
}

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

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

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: 4px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

#statusText {
    color: var(--text-secondary);
}

#statusCode {
    font-weight: 600;
}

#statusCode.success {
    color: var(--success-color);
}

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

.response-section,
.history-section {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.response-content {
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    border: 1px solid var(--border-color);
    max-height: 500px;
    overflow: auto;
}

#responseOutput {
    padding: 1rem;
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.history-item {
    background-color: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: border-color 0.2s;
}

.history-item:hover {
    border-color: var(--accent-color);
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.history-method {
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    font-size: 0.8rem;
}

.history-method.GET {
    background-color: #2e7d32;
}

.history-method.POST {
    background-color: #1976d2;
}

.history-method.PUT {
    background-color: #f57c00;
}

.history-method.DELETE {
    background-color: #c62828;
}

.history-url {
    color: var(--text-secondary);
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-time {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.empty-state {
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #505050;
}

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

    h1 {
        font-size: 2rem;
    }

    .proxy-form,
    .response-section,
    .history-section {
        padding: 1rem;
    }
}