/* Shared design system for tools.marc-julian.com.
   Mirrors marc-julian.com (services/astro). */

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

:root {
    --color-bg: #fafafa;
    --color-text: #2e3338;
    --color-muted: #6b7280;
    --color-accent: #1a1d21;
    --color-underline: #1a1d2159;
    --color-border: #d9d8d8;
    --color-back-link: #6b7280;
    --color-surface: #f1f1f0;
    --color-good: #2d7a3a;
    --color-bad: #b03030;
}

@media (prefers-color-scheme: dark) {
    :root:not(.light) {
        --color-bg: #0d1017;
        --color-text: #bfbdb6;
        --color-muted: #8b949e;
        --color-accent: #f0eee6;
        --color-underline: #f0eee659;
        --color-border: #2f3947;
        --color-back-link: #8b949e;
        --color-surface: #161b24;
        --color-good: #5ac882;
        --color-bad: #e06464;
    }
}

html.dark {
    --color-bg: #0d1017;
    --color-text: #bfbdb6;
    --color-muted: #8b949e;
    --color-accent: #f0eee6;
    --color-underline: #f0eee659;
    --color-border: #2f3947;
    --color-back-link: #8b949e;
    --color-surface: #161b24;
    --color-good: #5ac882;
    --color-bad: #e06464;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", system-ui, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.625;
    -webkit-font-smoothing: antialiased;
    position: relative;
}

/* Layout */

.container {
    max-width: 42rem;
    margin: 0 auto;
    padding: 4rem 1.5rem;
}

.container.wide {
    max-width: 64rem;
}

/* Theme toggle, same placement as the main site */

#theme-toggle {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    color: var(--color-muted);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: color 0.15s;
}

#theme-toggle:hover {
    color: var(--color-text);
}

/* Typography */

h1 {
    font-size: 2.25rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--color-text);
    margin-bottom: 2rem;
}

.section-label {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.field-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: 0.375rem;
}

.muted-text {
    color: var(--color-muted);
}

/* Sits under an h1 that has had its bottom margin removed */
.subtitle {
    font-size: 1rem;
    color: var(--color-muted);
    margin-top: 0.5rem;
    margin-bottom: 2.5rem;
}

/*
  Links carry weight and an underline instead of a distinct hue, since the
  accent is the text color.
*/
.accent-link {
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
    text-decoration-color: var(--color-underline);
    transition: text-decoration-color 0.15s;
}

.accent-link:hover {
    text-decoration-thickness: 2px;
    text-decoration-color: var(--color-accent);
}

.back-link {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--color-back-link);
    text-decoration: none;
    margin-bottom: 2rem;
    transition: color 0.15s;
}

.back-link:hover {
    color: var(--color-text);
}

/* List rows */

.list-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
}

.list-row:last-child {
    border-bottom: none;
}

.list-title {
    font-size: 1rem;
    color: var(--color-text);
    transition: color 0.15s;
}

.list-row:hover .list-title {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
}

.list-sub {
    font-size: 1rem;
    color: var(--color-muted);
    text-align: right;
    min-width: 0;
}

.list-icon {
    display: inline-block;
    vertical-align: -0.12em;
    margin-left: 0.35rem;
    color: var(--color-muted);
}

.list-row:hover .list-icon {
    color: var(--color-accent);
}

/* Form controls */

.field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

input[type="text"],
input[type="number"],
input[type="search"],
select,
textarea,
.input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.15s;
}

input::placeholder,
textarea::placeholder {
    color: var(--color-muted);
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
select:focus,
textarea:focus,
.input:focus {
    border-color: var(--color-accent);
}

textarea {
    resize: vertical;
    line-height: 1.6;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--color-accent);
}

input[type="checkbox"],
input[type="radio"] {
    accent-color: var(--color-accent);
}

/* Buttons */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--color-text);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    transition:
        border-color 0.15s,
        color 0.15s,
        background-color 0.15s;
}

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

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    border-color: var(--color-border);
    color: var(--color-muted);
}

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

.btn.primary:hover {
    opacity: 0.85;
    color: var(--color-bg);
}

/* Panels */

.panel {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 1.25rem;
}

.surface {
    background: var(--color-surface);
    border-radius: 6px;
}

pre {
    overflow-x: auto;
}

@media (max-width: 640px) {
    .container {
        padding: 3rem 1.25rem;
    }

    h1 {
        font-size: 1.875rem;
    }
}