:root {
    /* Unix/Terminal Aesthetic Palette */
    --bg: #0d1117;
    --text: #c9d1d9;
    --text-dim: #8b949e;
    --border: #30363d;
    --primary: #238636;
    --primary-hover: #2ea043;
    --secondary: #21262d;
    --secondary-hover: #30363d;
    --accent: #58a6ff;
    --highlight: rgba(241, 250, 140, 0.1); /* Subtle Dracula Yellow */
    
    --margin: 1rem;
    --line-height: 1.5;
    --font-mono: "Fira Code", "JetBrains Mono", "Cascadia Code", "Source Code Pro", "Menlo", "Monaco", "Consolas", monospace;
}

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

html, body {
    height: 100%;
    width: 100%;
    font-family: var(--font-mono);
    background-color: var(--bg);
    color: var(--text);
    overflow: hidden;
}

body {
    display: flex;
    flex-direction: column;
}

#nav {
    display: flex;
    height: 3.5rem;
    padding: 0 var(--margin);
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg);
    flex-shrink: 0;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-left .title {
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-dim);
    letter-spacing: -0.02em;
}

.nav-left .title:hover { color: var(--text); }

.source-link {
    font-size: 0.75rem !important;
    padding: 0.2rem 0.5rem !important;
    opacity: 0.7;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid var(--border);
    font-family: inherit;
    transition: all 0.1s ease;
}

.primary { background-color: var(--primary); color: #ffffff; }
.secondary { background-color: var(--secondary); color: var(--text); }

#metadata {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}

main {
    flex-grow: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 0 var(--margin) var(--margin) var(--margin);
}

.content-wrapper {
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
    width: 100%;
    height: 100%;
    scroll-behavior: smooth;
}

#paste-form {
    height: 100%;
    display: flex;
    flex-direction: column;
}

textarea {
    flex-grow: 1;
    width: 100%;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: var(--line-height);
    border: none;
    outline: none;
    background-color: transparent !important;
    color: inherit;
    resize: none;
    padding: 0.5rem;
    white-space: pre;
    overflow: auto;
}

pre, code {
    background: transparent !important;
    padding: 0 !important;
    margin: 0 !important;
    font-family: inherit !important;
    font-size: inherit !important;
    line-height: var(--line-height) !important;
}

code.with-line-numbers {
    display: block;
}

.line {
    display: grid;
    grid-template-columns: calc(var(--digits, 1) * 1ch + 2rem) minmax(0, 1fr);
    width: 100%;
    min-height: calc(1em * var(--line-height));
    /* Breathing room when targeting a line */
    scroll-margin-top: 2rem;
}

.line-number {
    grid-column: 1;
    text-align: right;
    padding-right: 1rem;
    color: var(--text-dim);
    opacity: 0.3;
    border-right: 1px solid var(--border);
    user-select: none;
    text-decoration: none;
    cursor: pointer;
    font-size: 0.9rem;
}

.line-number:hover {
    opacity: 0.8;
    color: var(--accent);
}

.line-code {
    grid-column: 2;
    padding-left: 1rem;
    white-space: pre-wrap;
    word-break: break-all;
}

/* 
   Line Highlight via URL Hash (#L315)
*/
.line:target {
    background-color: var(--highlight);
}

.line:target .line-number {
    opacity: 1;
    color: #f1fa8c; /* Dracula Yellow */
    border-right-color: #f1fa8c;
    border-right-width: 2px;
}

/* Selection */
::selection { background: rgba(59, 130, 246, 0.4); color: #ffffff; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--secondary); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

@media (max-width: 640px) {
    #metadata { display: none; }
    .line { grid-template-columns: 1fr; }
    .line-number { display: none; }
    .line-code { padding-left: 0; }
}