/* ===========================
   RESET & BASE
   =========================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1b26;
    --bg-secondary: #16171f;
    --bg-terminal: #13141c;
    --bg-header: rgba(26, 27, 38, 0.92);
    --green-primary: #4ade80;
    --green-dim: #2dd864;
    --green-dark: #22c55e;
    --green-glow: rgba(74, 222, 128, 0.15);
    --cyan-primary: #35c2ff;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-dim: #6e7681;
    --white: #e6edf3;
    --border-color: #30363d;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --header-height: 56px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow: hidden;
}

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

/* ===========================
   HEADER
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    height: var(--header-height);
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--green-primary);
    letter-spacing: 1px;
}

.cursor {
    animation: blink 1s step-end infinite;
    margin-left: 2px;
    font-weight: 400;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color 0.25s ease;
    font-weight: 400;
    cursor: pointer;
}

.nav-link:hover {
    color: var(--green-primary);
}

/* ===========================
   SPLIT CONTAINER
   =========================== */
.split-container {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    overflow: hidden;
}

/* ===========================
   TERMINAL (LEFT PANE)
   =========================== */
.terminal {
    flex: 1;
    min-width: 0;
    background: var(--bg-primary);
    overflow: hidden;
    transition: flex 0.3s ease;
}

.split-container.viewer-open .terminal {
    flex: 1;
}

.terminal-scroll {
    height: 100%;
    overflow-y: auto;
    padding: 28px 40px 40px;
}

.terminal-scroll::-webkit-scrollbar {
    width: 6px;
}

.terminal-scroll::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

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

/* ===========================
   VIEWER PANEL (RIGHT PANE)
   =========================== */
.viewer-panel {
    display: none;
    width: 0;
    background: var(--bg-primary);
    overflow: hidden;
    transition: width 0.3s ease;
}

.split-container.viewer-open .viewer-panel {
    display: block;
    width: 50%;
    flex-shrink: 0;
}

/* The frame that wraps title + body */
.viewer-frame {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin: 10px 10px 10px 0;
    border: 1px solid var(--green-primary);
    border-radius: 2px;
    overflow: hidden;
}

/* Title bar */
.viewer-titlebar {
    display: flex;
    align-items: center;
    padding: 6px 12px;
    border-bottom: 1px solid var(--green-primary);
    background: var(--bg-secondary);
    flex-shrink: 0;
    gap: 8px;
    user-select: none;
}

.viewer-titlebar::before {
    content: '┤';
    color: var(--green-primary);
    font-size: 0.78rem;
}

.viewer-title {
    flex: 1;
    color: var(--green-primary);
    font-size: 0.82rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.viewer-close {
    color: #f87171;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 4px;
    transition: background 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
}

.viewer-close:hover {
    background: #f87171;
    color: var(--bg-primary);
}

.viewer-titlebar::after {
    content: '├';
    color: var(--green-primary);
    font-size: 0.78rem;
}

/* Body / content area */
.viewer-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px 20px;
    font-size: 0.85rem;
    line-height: 1.7;
    min-width: 0;
    border-left: 1px solid rgba(74, 222, 128, 0.15);
}

.viewer-body::-webkit-scrollbar {
    width: 4px;
}

.viewer-body::-webkit-scrollbar-track {
    background: transparent;
}

.viewer-body::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

/* Rich content inside viewer */
.viewer-body .rich-output {
    margin: 0;
}

.viewer-body .rich-output h1 {
    font-size: 1.8rem;
}

.viewer-body .rich-output h2 {
    font-size: 1.3rem;
}

.viewer-body img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
}

/* ===========================
   TERMINAL OUTPUT
   =========================== */
#terminal-output .output-line {
    margin-bottom: 2px;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.85rem;
    line-height: 1.7;
}

#terminal-output .output-line.cmd {
    color: var(--green-primary);
}

#terminal-output .output-line.result {
    color: var(--text-primary);
}

#terminal-output .output-line.error {
    color: #f87171;
}

#terminal-output .output-line.info {
    color: var(--text-secondary);
}

#terminal-output .output-line.green {
    color: var(--green-primary);
}

/* ===========================
   RICH FORMATTED OUTPUT
   =========================== */
.rich-output {
    margin: 8px 0 16px;
}

.rich-output h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.15;
    color: var(--white);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.rich-output h1 .hl {
    color: var(--green-primary);
    text-decoration: underline;
    text-decoration-thickness: 3px;
    text-underline-offset: 6px;
    text-decoration-color: var(--green-primary);
}

.rich-output h2 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--white);
    margin-top: 20px;
    margin-bottom: 12px;
}

.rich-output h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--green-primary);
    margin-top: 16px;
    margin-bottom: 8px;
}

.rich-output p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 10px;
    font-weight: 300;
}

.rich-output .comment {
    font-size: 0.92rem;
    color: var(--green-primary);
    font-style: italic;
    opacity: 0.85;
    margin-bottom: 20px;
}

.rich-output .btn-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 24px;
    margin-bottom: 12px;
}

.rich-output .btn {
    display: inline-block;
    padding: 12px 24px;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1.5px solid transparent;
    text-decoration: none;
}

.rich-output .btn-primary {
    background: var(--green-primary);
    color: var(--bg-primary);
    border-color: var(--green-primary);
}

.rich-output .btn-primary:hover {
    background: transparent;
    color: var(--green-primary);
    box-shadow: 0 0 20px var(--green-glow);
}

.rich-output .btn-secondary {
    background: transparent;
    color: var(--green-primary);
    border-color: var(--green-primary);
}

.rich-output .btn-secondary:hover {
    background: var(--green-primary);
    color: var(--bg-primary);
    box-shadow: 0 0 20px var(--green-glow);
}

.rich-output .btn-cyan {
    background: var(--cyan-primary);
    color: var(--bg-primary);
    border-color: var(--cyan-primary);
}

.rich-output .btn-cyan:hover {
    background: transparent;
    color: var(--cyan-primary);
    box-shadow: 0 0 20px rgba(53, 158, 255, 0.25);
}

.rich-output .btn-cyan-outline {
    background: transparent;
    color: var(--cyan-primary);
    border-color: var(--cyan-primary);
}

.rich-output .btn-cyan-outline:hover {
    background: var(--cyan-primary);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(53, 158, 255, 0.25);
}

/* Articles list */
.rich-output .article-list {
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
    margin-top: 12px;
}

.rich-output .article-item {
    margin-bottom: 16px;
    padding: 4px 0;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.rich-output .article-item:hover {
    transform: translateX(6px);
}

.rich-output .article-item:last-child {
    margin-bottom: 0;
}

.rich-output .file-info {
    font-size: 0.75rem;
    color: var(--green-dim);
    margin-bottom: 4px;
    letter-spacing: 0.3px;
}

.rich-output .article-title {
    font-size: 1.05rem;
    color: var(--white);
    font-weight: 500;
    transition: color 0.2s ease;
}

.rich-output .article-item:hover .article-title {
    color: var(--green-primary);
}

/* Info grid */
.rich-output .info-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
    margin: 12px 0;
}

.rich-output .info-label {
    color: var(--green-primary);
    font-size: 0.85rem;
    font-weight: 600;
}

.rich-output .info-value {
    color: var(--text-primary);
    font-size: 0.85rem;
}

/* Tables */
.rich-output table {
    width: 100%;
    max-width: 600px;
    border-collapse: collapse;
    margin: 12px 0;
}

.rich-output th {
    text-align: left;
    color: var(--green-primary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 12px;
    border-bottom: 1px solid var(--border-color);
}

.rich-output td {
    color: var(--text-primary);
    font-size: 0.82rem;
    padding: 4px 12px;
    border-bottom: 1px solid rgba(48, 54, 61, 0.4);
}

.rich-output tr:hover td {
    background: rgba(74, 222, 128, 0.04);
}

/* Code blocks */
.rich-output pre {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    margin: 12px 0;
    overflow-x: auto;
    font-size: 0.82rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.rich-output code {
    font-family: var(--font-mono);
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.82rem;
    color: var(--green-primary);
}

.rich-output pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.rich-output hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
}

/* Lists */
.rich-output ul,
.rich-output ol {
    padding-left: 24px;
    margin: 8px 0;
}

.rich-output li {
    font-size: 0.88rem;
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 4px;
}

.rich-output li::marker {
    color: var(--green-primary);
}

/* Blockquote */
.rich-output blockquote {
    border-left: 3px solid var(--green-primary);
    padding: 8px 16px;
    margin: 12px 0;
    background: rgba(74, 222, 128, 0.04);
    border-radius: 0 6px 6px 0;
}

.rich-output blockquote p {
    color: var(--text-primary);
    font-style: italic;
    margin-bottom: 0;
}

/* Photo grid */
.rich-output .photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

.rich-output .photo-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.rich-output .photo-card:hover {
    border-color: var(--green-primary);
    transform: translateY(-2px);
}

.rich-output .photo-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.rich-output .photo-name {
    color: var(--white);
    font-size: 0.82rem;
    font-weight: 500;
}

.rich-output .photo-meta {
    color: var(--text-dim);
    font-size: 0.72rem;
    margin-top: 4px;
}

/* ===========================
   TERMINAL INPUT LINE
   =========================== */
.prompt-interactive {
    color: var(--green-primary);
    font-size: 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    caret-color: var(--green-primary);
}

/* ===========================
   AUTOCOMPLETE GHOST
   =========================== */
.terminal-input-line {
    display: flex;
    align-items: center;
    margin-top: 8px;
    position: relative;
}

.autocomplete-ghost {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    opacity: 0.5;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    pointer-events: none;
    white-space: nowrap;
    overflow: hidden;
}

/* ===========================
   IMAGE VIEWER (inline fallback)
   =========================== */
.image-viewer {
    margin: 8px 0 16px;
}

.image-viewer-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.image-viewer-icon {
    font-size: 1.2rem;
}

.image-viewer-name {
    color: var(--white);
    font-size: 0.88rem;
    font-weight: 600;
}

.image-viewer-meta {
    color: var(--text-dim);
    font-size: 0.75rem;
    margin-left: auto;
}

.image-viewer-frame {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-secondary);
    max-width: 700px;
    transition: border-color 0.3s ease;
}

.image-viewer-frame:hover {
    border-color: var(--green-primary);
}

.image-viewer-img {
    width: 100%;
    height: auto;
    display: block;
}

.image-viewer-caption {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 10px;
    font-style: italic;
    text-align: center;
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
    .header {
        padding: 0 20px;
    }

    .nav {
        gap: 16px;
    }

    .nav-link {
        font-size: 0.75rem;
    }

    .terminal-scroll {
        padding: 20px;
    }

    .rich-output h1 {
        font-size: 2rem;
    }

    .rich-output .btn-row {
        flex-direction: column;
    }

    .rich-output .btn {
        text-align: center;
    }

    /* On mobile: hide viewer panel, always use inline */
    .split-container.viewer-open .viewer-panel {
        display: none;
        width: 0;
    }

    .split-container.viewer-open .terminal {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 0.95rem;
    }

    .nav {
        gap: 10px;
    }

    .nav-link {
        font-size: 0.7rem;
    }

    .rich-output h1 {
        font-size: 1.6rem;
    }
}
/* ===========================
   COVER OVERLAY
   =========================== */
.cover-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.cover-image {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}