/* ============================================================
   THE COSMOGRAPH — Design System
   Aesthetic: Editorial / Literary Magazine
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Color Tokens --- */
:root {
    --color-bg:          #F7F4EF;   /* warm cream — not harsh white */
    --color-bg-alt:      #EDE9E2;   /* slightly darker cream for cards */
    --color-surface:     #FFFFFF;   /* pure white for post cards */
    --color-border:      #D6D0C8;   /* warm gray border */
    --color-border-dark: #A89F94;   /* stronger border */

    --color-ink:         #1A1714;   /* near-black — warmer than #000 */
    --color-ink-mid:     #4A4540;   /* secondary text */
    --color-ink-muted:   #7A736C;   /* captions, meta */
    --color-ink-faint:   #A89F94;   /* placeholders, disabled */

    --color-accent:      #2B5F6B;   /* deep teal — the platform's signature color */
    --color-accent-mid:  #3D7A89;   /* hover state */
    --color-accent-light:#E8F2F4;   /* teal tint for backgrounds */

    --color-warning:     #8B4513;   /* earthy amber for alerts */
    --color-error:       #8B2E2E;   /* muted red */
    --color-success:     #2E6B4F;   /* forest green */

    /* --- Typography --- */
    --font-display:      'Playfair Display', Georgia, serif;
    --font-body:         'Source Serif 4', Georgia, serif;
    --font-mono:         'JetBrains Mono', 'Courier New', monospace;

    /* --- Spacing --- */
    --content-width:     720px;     /* optimal reading line length */
    --wide-width:        1100px;    /* max layout width */

    /* --- Transitions --- */
    --transition-fast:   150ms ease;
    --transition-base:   250ms ease;
}

/* --- Base --- */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 18px; scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-ink);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* --- Typography Scale --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.2;
    color: var(--color-ink);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 600; }
h3 { font-size: 1.35rem; font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { margin-bottom: 1.4rem; }
p:last-child { margin-bottom: 0; }

a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}
a:hover { color: var(--color-accent-mid); }

/* --- Layout --- */
.container {
    width: 100%;
    max-width: var(--wide-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.reading-width {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* --- Nav --- */
.site-nav {
    background-color: var(--color-ink);
    border-bottom: 3px solid var(--color-accent);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-nav a {
    color: var(--color-bg);
    text-decoration: none;
    font-family: var(--font-display);
    letter-spacing: 0.03em;
    transition: color var(--transition-fast);
}

.site-nav a:hover { color: var(--color-accent-light); }

.site-logo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    font-style: italic;
    color: #FFFFFF;
    letter-spacing: -0.01em;
}

.site-logo span {
    color: var(--color-accent-mid);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.2rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 3px;
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #FFFFFF;
    border-color: var(--color-accent);
}
.btn-primary:hover {
    background-color: var(--color-accent-mid);
    border-color: var(--color-accent-mid);
    color: #FFFFFF;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.btn-outline:hover {
    background-color: var(--color-accent);
    color: #FFFFFF;
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-ink-mid);
    border-color: var(--color-border);
}
.btn-ghost:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-ink);
}

.btn-danger {
    background-color: transparent;
    color: var(--color-error);
    border-color: var(--color-error);
}
.btn-danger:hover {
    background-color: var(--color-error);
    color: #FFFFFF;
}

.btn-sm {
    padding: 0.35rem 0.8rem;
    font-size: 0.82rem;
}

/* --- Cards --- */
.post-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 1.75rem 2rem;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.post-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 20px rgba(43, 95, 107, 0.08);
}

.post-card-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-ink);
    text-decoration: none;
}

.post-card-title:hover { color: var(--color-accent); text-decoration: none; }

.post-meta {
    font-size: 0.82rem;
    color: var(--color-ink-muted);
    font-style: italic;
}

.post-type-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-family: var(--font-body);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.2rem 0.55rem;
    border-radius: 2px;
    background-color: var(--color-accent-light);
    color: var(--color-accent);
}

/* --- Forms --- */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    margin-bottom: 0.4rem;
    color: var(--color-ink-mid);
    letter-spacing: 0.02em;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.6rem 0.85rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-ink);
    background-color: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: 3px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(43, 95, 107, 0.12);
}

.form-textarea { resize: vertical; min-height: 120px; }

.form-error {
    font-size: 0.82rem;
    color: var(--color-error);
    margin-top: 0.3rem;
}

.form-help {
    font-size: 0.82rem;
    color: var(--color-ink-muted);
    margin-top: 0.3rem;
    font-style: italic;
}

/* --- Messages (Django messages framework) --- */
.messages-container { padding: 0.75rem 0; }

.message {
    padding: 0.85rem 1.25rem;
    border-radius: 3px;
    border-left: 4px solid;
    margin-bottom: 0.5rem;
    font-size: 0.92rem;
}

.message-success {
    background-color: #EBF5EF;
    border-color: var(--color-success);
    color: var(--color-success);
}

.message-error {
    background-color: #F5EBEB;
    border-color: var(--color-error);
    color: var(--color-error);
}

.message-warning {
    background-color: #F5F0EB;
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.message-info {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* --- Post Body (Rich Text Rendering) --- */
.prose-body { font-family: var(--font-body); font-size: 1.05rem; line-height: 1.8; }
.prose-body h2 { margin: 2.5rem 0 1rem; }
.prose-body h3 { margin: 2rem 0 0.75rem; }
.prose-body h4 { margin: 1.5rem 0 0.5rem; }
.prose-body blockquote {
    border-left: 4px solid var(--color-accent);
    margin: 1.5rem 0;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-accent-light);
    font-style: italic;
    color: var(--color-ink-mid);
}
.prose-body ul, .prose-body ol { padding-left: 1.5rem; margin-bottom: 1.4rem; }
.prose-body li { margin-bottom: 0.4rem; }
.prose-body pre {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    background-color: var(--color-ink);
    color: var(--color-bg);
    padding: 1.25rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 1.5rem 0;
}
.prose-body code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background-color: var(--color-bg-alt);
    padding: 0.15em 0.4em;
    border-radius: 2px;
}
.prose-body img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 1.5rem 0;
}
.prose-body a { color: var(--color-accent); }

/* --- Reactions --- */
.reaction-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
    border: 1.5px solid var(--color-border);
    border-radius: 99px;
    background: transparent;
    color: var(--color-ink-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-body);
}

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

.reaction-btn.active {
    border-color: var(--color-accent);
    background-color: var(--color-accent-light);
    color: var(--color-accent);
    font-weight: 600;
}

/* --- Comments --- */
.comment {
    border-top: 1px solid var(--color-border);
    padding: 1.25rem 0;
}

.comment-reply {
    margin-left: 2.5rem;
    padding-left: 1.25rem;
    border-left: 2px solid var(--color-border);
}

.comment-author {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-ink);
    text-decoration: none;
}

.comment-author:hover { color: var(--color-accent); text-decoration: none; }

/* --- Tags --- */
.tag-pill {
    display: inline-block;
    font-size: 0.78rem;
    padding: 0.2rem 0.6rem;
    border-radius: 2px;
    border: 1px solid var(--color-border);
    color: var(--color-ink-muted);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-style: normal;
}

.tag-pill:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
}

/* --- Divider --- */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2rem 0;
}

/* --- Pagination --- */
.pagination {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    margin: 3rem 0;
}

.page-link {
    padding: 0.5rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: 3px;
    font-size: 0.9rem;
    color: var(--color-ink-mid);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.page-link:hover, .page-link.active {
    border-color: var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
}

/* --- Utilities --- */
.text-muted   { color: var(--color-ink-muted); }
.text-small   { font-size: 0.85rem; }
.text-italic  { font-style: italic; }
.text-mono    { font-family: var(--font-mono); }
.mt-1  { margin-top: 0.5rem; }
.mt-2  { margin-top: 1rem; }
.mt-3  { margin-top: 1.5rem; }
.mt-4  { margin-top: 2rem; }
.mt-6  { margin-top: 3rem; }
.mb-1  { margin-bottom: 0.5rem; }
.mb-2  { margin-bottom: 1rem; }
.mb-3  { margin-bottom: 1.5rem; }
.mb-4  { margin-bottom: 2rem; }
.flex  { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
}

/* --- Search Highlights --- */
mark {
    background-color: #FFF3B0;
    color: var(--color-ink);
    padding: 0.05em 0.1em;
    border-radius: 2px;
}

/* Search input in nav — placeholder color */
#search-container input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}
#search-container input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5) !important;
}