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

:root {
    --primary-color: #10b981;
    --primary-hover: #059669;
    --secondary-color: #64748b;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --success-color: #10b981;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border: #475569;
    --code-bg: #1e1e1e;
    --sidebar-width: 280px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 100%;
    margin: 0 auto;
}

header {
    padding: 20px;
    text-align: center;
    background: var(--surface);
    border-bottom: 2px solid var(--border);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 5px;
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 10px;
}

.security-warning {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: 6px;
    padding: 8px 15px;
    font-size: 0.85rem;
    color: var(--warning-color);
    margin-top: 10px;
}

.warning-icon {
    font-size: 1.2rem;
}

/* Layout */
.main-layout {
    display: flex;
    min-height: calc(100vh - 200px);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 2px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h3 {
    font-size: 1rem;
    color: var(--text-primary);
}

.search-box {
    padding: 10px 15px;
    border-bottom: 1px solid var(--border);
}

.search-input {
    width: 100%;
    padding: 8px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.collections-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.collection-item {
    margin-bottom: 8px;
}

.request-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.request-item:hover {
    background: var(--border);
    border-color: var(--primary-color);
}

.request-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

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

.request-method {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: 8px;
}

.request-method.GET { background: var(--success-color); color: white; }
.request-method.POST { background: var(--warning-color); color: white; }
.request-method.PUT { background: var(--info-color); color: white; }
.request-method.PATCH { background: #8b5cf6; color: white; }
.request-method.DELETE { background: var(--danger-color); color: white; }

.request-title {
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.request-actions {
    display: flex;
    gap: 5px;
}

.btn-delete {
    background: transparent;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.btn-delete:hover {
    opacity: 1;
}

.sidebar-footer {
    padding: 10px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.request-section,
.response-section,
.examples-section {
    background: var(--surface);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.request-header {
    margin-bottom: 15px;
}

.request-name {
    display: flex;
    align-items: center;
    gap: 10px;
}

.request-name-input {
    flex: 1;
    padding: 8px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

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

.request-line {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.method-select {
    min-width: 120px;
    padding: 12px 15px;
    background: var(--surface-light);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

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

.url-input {
    flex: 1;
    padding: 12px 15px;
    background: var(--code-bg);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 1rem;
}

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

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.4);
}

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

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

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-send {
    min-width: 120px;
    font-size: 1rem;
}

.send-icon {
    font-size: 1.2rem;
}

.btn-icon {
    background: transparent;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 5px;
    transition: transform 0.2s ease;
}

.btn-icon:hover {
    transform: scale(1.2);
}

.btn-add {
    padding: 8px 15px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Tabs */
.request-tabs,
.response-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.req-tab,
.res-tab {
    padding: 10px 20px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.req-tab:hover,
.res-tab:hover {
    color: var(--text-primary);
}

.req-tab.active,
.res-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.req-panel,
.res-panel {
    display: none;
}

.req-panel.active,
.res-panel.active {
    display: block;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.panel-header h4 {
    color: var(--text-primary);
}

/* Key-Value Pairs */
.key-value-list {
    display: grid;
    gap: 10px;
}

.key-value-row {
    display: grid;
    grid-template-columns: 30px 1fr 1fr 40px;
    gap: 10px;
    align-items: center;
}

.kv-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.kv-input {
    padding: 8px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.kv-input:disabled {
    opacity: 0.5;
}

.btn-remove {
    background: transparent;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 4px;
}

.btn-remove:hover {
    opacity: 0.7;
}

/* Preset Headers */
.preset-headers {
    display: flex;
    gap: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.preset-btn {
    padding: 6px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* Body Editor */
.body-type-selector {
    display: flex;
    gap: 15px;
}

.body-type-selector label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    color: var(--text-secondary);
}

.body-type-selector input:checked + span {
    color: var(--primary-color);
    font-weight: 600;
}

.body-content {
    display: none;
}

.body-content.active {
    display: block;
}

.editor-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.body-editor {
    width: 100%;
    min-height: 200px;
    padding: 15px;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    resize: vertical;
}

.body-editor:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Auth */
.auth-type-select {
    padding: 8px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
}

.auth-content {
    display: none;
    margin-top: 15px;
}

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

.warning-box {
    padding: 12px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: 6px;
    color: var(--warning-color);
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.empty-state {
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Response */
.response-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.response-meta {
    display: flex;
    gap: 10px;
}

.status-badge,
.time-badge,
.size-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-badge.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status-badge.error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.status-badge.warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.time-badge {
    background: var(--surface-light);
    color: var(--text-secondary);
}

.size-badge {
    background: var(--surface-light);
    color: var(--text-secondary);
}

.response-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.view-options {
    display: flex;
    gap: 15px;
}

.view-options label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.response-body {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
    min-height: 200px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.response-headers,
.response-cookies {
    display: grid;
    gap: 8px;
}

.header-item,
.cookie-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 10px;
    padding: 10px;
    background: var(--surface-light);
    border-radius: 6px;
}

.header-name,
.cookie-name {
    font-weight: 600;
    color: var(--primary-color);
    font-family: 'Consolas', monospace;
}

.header-value,
.cookie-value {
    color: var(--text-primary);
    font-family: 'Consolas', monospace;
    word-break: break-all;
}

.info-message {
    padding: 15px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--info-color);
    border-radius: 6px;
    color: var(--info-color);
    font-size: 0.9rem;
}

/* Examples */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.example-card {
    background: var(--surface-light);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.example-card:hover {
    background: var(--border);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
    border-color: var(--primary-color);
}

.example-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.example-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.footer-note {
    margin-top: 10px;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        max-height: 300px;
        border-right: none;
        border-bottom: 2px solid var(--border);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    .request-line {
        flex-direction: column;
    }

    .key-value-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .examples-grid {
        grid-template-columns: 1fr;
    }

    .response-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}