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

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --primary: #F97316;
    --accent: #FB923C;
    --bg: #0C0A09;
    --surface: #1C1917;
    --surface2: #292524;
    --border: #3A3532;
    --text: #F5F5F4;
    --text-dim: #78716C;
    --success: #22C55E;
    --danger: #EF4444;
    --font: 'Inter', system-ui, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    padding: .75rem 1.25rem;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, #080604, var(--surface));
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .6rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: .55rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo h1 {
    font-size: .92rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo p {
    font-size: .6rem;
    color: var(--text-dim);
}

.header-actions {
    display: flex;
    gap: .35rem;
    flex-wrap: wrap;
}

.btn {
    padding: .35rem .75rem;
    border-radius: 5px;
    border: none;
    font-family: var(--font);
    font-size: .7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .18s;
}

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

.btn-primary:hover {
    background: #ea6c10;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--surface2);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: #3a3732;
}

.btn-sm {
    font-size: .65rem;
    padding: .22rem .5rem;
}

/* Layout */
.app-layout {
    display: grid;
    grid-template-columns: 240px 1fr 340px;
    flex: 1;
    overflow: hidden;
    height: calc(100vh - 58px);
}

.sidebar {
    border-right: 1px solid var(--border);
    background: var(--surface);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: .6rem .75rem;
    border-bottom: 1px solid var(--border);
    font-size: .68rem;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: .07em;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.endpoint-list {
    flex: 1;
    overflow-y: auto;
    padding: .35rem;
}

.endpoint-item {
    padding: .4rem .6rem;
    border-radius: 5px;
    border: 1px solid transparent;
    cursor: pointer;
    margin-bottom: .22rem;
    transition: all .15s;
    display: flex;
    align-items: center;
    gap: .35rem;
    animation: fadeIn .2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(3px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

.endpoint-item:hover {
    background: var(--surface2);
}

.endpoint-item.active {
    background: rgba(249, 115, 22, .1);
    border-color: rgba(249, 115, 22, .35);
}

.method-badge {
    font-family: var(--mono);
    font-size: .6rem;
    font-weight: 700;
    padding: .08rem .3rem;
    border-radius: 3px;
    text-transform: uppercase;
    flex-shrink: 0;
    min-width: 40px;
    text-align: center;
}

.mb-get {
    background: rgba(34, 197, 94, .15);
    color: #22C55E;
}

.mb-post {
    background: rgba(249, 115, 22, .15);
    color: #F97316;
}

.mb-put {
    background: rgba(245, 158, 11, .15);
    color: #F59E0B;
}

.mb-patch {
    background: rgba(168, 85, 247, .15);
    color: #A855F7;
}

.mb-delete {
    background: rgba(239, 68, 68, .15);
    color: #EF4444;
}

.mb-head {
    background: rgba(99, 102, 241, .15);
    color: #6366F1;
}

.ep-path {
    font-family: var(--mono);
    font-size: .68rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Editor panel */
.editor-panel {
    overflow-y: auto;
    background: var(--bg);
    border-right: 1px solid var(--border);
}

.editor-content {
    padding: 1.1rem;
    max-width: 580px;
}

.section-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: .75rem .9rem;
    margin-bottom: .85rem;
}

.section-title {
    font-size: .68rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: .6rem;
}

.form-group {
    margin-bottom: .65rem;
}

.form-label {
    font-size: .68rem;
    font-weight: 600;
    color: var(--text-dim);
    display: block;
    margin-bottom: .18rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 5px;
    color: var(--text);
    font-family: var(--font);
    font-size: .77rem;
    padding: .35rem .5rem;
    outline: none;
    transition: border-color .2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary);
}

.form-textarea {
    resize: vertical;
    min-height: 65px;
    line-height: 1.6;
}

.code-input,
.code-select {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: var(--mono);
    font-size: .72rem;
    padding: .28rem .45rem;
    outline: none;
    transition: border-color .2s;
}

.code-input:focus,
.code-select:focus {
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .5rem;
}

.rm-btn {
    background: rgba(239, 68, 68, .1);
    border: none;
    color: var(--danger);
    cursor: pointer;
    border-radius: 4px;
    padding: .15rem .35rem;
    font-size: .7rem;
    transition: background .12s;
}

.rm-btn:hover {
    background: rgba(239, 68, 68, .22);
}

/* Info form */
.info-form {
    padding: .75rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

/* Preview panel */
.preview-panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #0a0800;
}

.preview-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
}

.preview-tab {
    padding: .45rem .85rem;
    font-size: .7rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-dim);
    border-bottom: 2px solid transparent;
    transition: all .15s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font);
}

.preview-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.code-view {
    flex: 1;
    overflow-y: auto;
    padding: .85rem;
    font-family: var(--mono);
    font-size: .72rem;
    color: #C4B5FD;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 4px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

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

@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 200px 1fr;
    }

    .preview-panel {
        display: none;
    }
}