/* ============================================
   LEARN ARTICLE — Editorial Magazine Layout
   Uses theme variables from site.css
   ============================================ */

/* ── Hero header with atmospheric gradient ── */
.learn-hero {
    position: relative;
    padding: 3rem 0 2.5rem;
    background:
        radial-gradient(ellipse 80% 50% at 20% 80%, color-mix(in srgb, var(--primary) 6%, transparent), transparent),
        radial-gradient(ellipse 60% 40% at 80% 20%, color-mix(in srgb, var(--secondary) 40%, transparent), transparent),
        var(--background);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.learn-hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--primary) 4%, transparent);
    filter: blur(60px);
    pointer-events: none;
}

.learn-hero .learn-section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.3rem 0.875rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 8%, var(--background));
    border: 1px solid color-mix(in srgb, var(--primary) 20%, transparent);
    border-radius: 999px;
    margin-bottom: 1.25rem;
}

.learn-hero h1 {
    font-family: 'Exo 2', var(--font-sans);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--foreground);
    margin: 0 0 1rem;
    letter-spacing: -0.01em;
}

.learn-hero .learn-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--muted-foreground);
}

.learn-hero .learn-meta i {
    font-size: 0.75rem;
    margin-right: 0.2rem;
}

.learn-hero .learn-lede {
    margin-top: 1.5rem;
    padding: 1.25rem 1.5rem;
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--foreground);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    border-left: 3px solid var(--primary);
}

/* ── Breadcrumb bar ── */
.learn-breadcrumb {
    background: color-mix(in srgb, var(--muted) 60%, var(--background));
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
}

.learn-breadcrumb ol {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.8125rem;
}

.learn-breadcrumb a {
    color: var(--muted-foreground);
    text-decoration: none;
    transition: color 0.15s;
}

.learn-breadcrumb a:hover { color: var(--primary); }

.learn-breadcrumb .bc-sep {
    color: var(--border);
    font-size: 0.625rem;
}

.learn-breadcrumb .bc-current {
    color: var(--foreground);
    font-weight: 500;
}

/* ── Article body — rich editorial typography ── */
.learn-body {
    max-width: 720px;
    margin: 0 auto;
    padding: 2.5rem 1rem 3rem;
}

.learn-body p {
    font-size: 1.0rem;
    line-height: 1.85;
    color: color-mix(in srgb, var(--foreground) 88%, transparent);
    margin-bottom: 1.5rem;
}

.learn-body strong {
    color: var(--foreground);
    font-weight: 600;
}

.learn-body a {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
    transition: border-color 0.15s;
}

.learn-body a:hover {
    border-bottom-color: var(--primary);
}

/* ── Section headings with accent dash ── */
.learn-body h2 {
    font-family: 'Exo 2', var(--font-sans);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--foreground);
    margin: 3rem 0 1.25rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    position: relative;
}

.learn-body h2::after {
    content: '';
    display: block;
    width: 2rem;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    margin-top: 0.625rem;
}

.learn-body h2:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

.learn-body h3 {
    font-family: 'Exo 2', var(--font-sans);
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--foreground);
    margin: 2rem 0 0.875rem;
}

/* ── Blockquotes — pull-quote style ── */
.learn-body blockquote {
    position: relative;
    margin: 2.5rem 0;
    padding: 1.5rem 1.75rem 1.5rem 2rem;
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--primary) 4%, var(--background)),
        color-mix(in srgb, var(--secondary) 20%, var(--background))
    );
    border: none;
    border-left: 4px solid var(--primary);
    border-radius: 0 0.75rem 0.75rem 0;
}

.learn-body blockquote::before {
    content: '\201C';
    position: absolute;
    top: -0.25rem;
    left: 0.75rem;
    font-family: var(--font-serif);
    font-size: 3.5rem;
    line-height: 1;
    color: color-mix(in srgb, var(--primary) 20%, transparent);
    pointer-events: none;
}

.learn-body blockquote p {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--foreground);
    margin-bottom: 0;
}

/* ── Lists — refined spacing ── */
.learn-body ul,
.learn-body ol {
    margin: 1.25rem 0 1.75rem;
    padding-left: 0;
    list-style: none;
}

.learn-body ul > li,
.learn-body ol > li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.7;
    color: color-mix(in srgb, var(--foreground) 88%, transparent);
}

.learn-body ul > li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.625rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.learn-body ol {
    counter-reset: learn-ol;
}

.learn-body ol > li {
    counter-increment: learn-ol;
    padding-left: 2rem;
}

.learn-body ol > li::before {
    content: counter(learn-ol);
    position: absolute;
    left: 0;
    top: 0;
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 8%, var(--background));
    border-radius: 50%;
}

/* Nested list-inside overrides (content HTML uses list-inside) */
.learn-body .list-decimal { list-style: none; counter-reset: learn-ol; }
.learn-body .list-decimal > li { counter-increment: learn-ol; padding-left: 2rem; position: relative; }
.learn-body .list-decimal > li::before {
    content: counter(learn-ol);
    position: absolute; left: 0; top: 0.125rem;
    width: 1.5rem; height: 1.5rem;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; font-weight: 700;
    color: var(--primary);
    background: color-mix(in srgb, var(--primary) 8%, var(--background));
    border-radius: 50%;
}

/* ── Cards & grid items ── */
.learn-body .bg-card,
.learn-body .bg-secondary {
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.learn-body .bg-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px color-mix(in srgb, var(--foreground) 6%, transparent);
}

/* Grid info-cards from content (suits, spread positions, etc.) */
.learn-body .grid {
    margin: 1.75rem 0;
}

.learn-body .grid > div {
    border-radius: 0.75rem;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.learn-body .grid > div:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--foreground) 5%, transparent);
}

/* Numbered position cards (spread layouts) */
.learn-body .grid .text-2xl.font-bold {
    font-family: var(--font-serif);
}

/* ── Callout boxes (step-by-step, tips, warnings) ── */
.learn-body > div[style*="border-left: 4px solid var(--primary)"],
.learn-body > .rounded-xl[style*="border-left"] {
    background: color-mix(in srgb, var(--primary) 3%, var(--background));
    border-radius: 0 0.75rem 0.75rem 0 !important;
}

.learn-body > div[style*="border-left: 4px solid #f59e0b"] {
    background: color-mix(in srgb, #f59e0b 4%, var(--background));
    border-radius: 0 0.75rem 0.75rem 0 !important;
}

/* Tip / lightbulb callout from content */
.learn-body .bg-primary\/5 {
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--primary) 5%, var(--background)),
        color-mix(in srgb, var(--secondary) 12%, var(--background))
    ) !important;
    border-radius: 0.75rem;
}

/* ── Tables — clean editorial style ── */
.learn-body table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    overflow: hidden;
    font-size: 0.875rem;
}

.learn-body thead tr {
    background: color-mix(in srgb, var(--primary) 5%, var(--muted));
}

.learn-body th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--foreground);
    border-bottom: 2px solid color-mix(in srgb, var(--primary) 15%, var(--border));
}

.learn-body td {
    padding: 0.75rem 1rem;
    color: color-mix(in srgb, var(--foreground) 85%, transparent);
    border-bottom: 1px solid var(--border);
}

.learn-body tbody tr:last-child td { border-bottom: none; }

.learn-body tbody tr:hover {
    background: color-mix(in srgb, var(--muted) 50%, transparent);
}

/* ── Footer area — continue learning links ── */
.learn-body footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border);
}

.learn-body footer a {
    border-bottom: none;
}

/* "Continue Learning" link cards */
.learn-body footer .flex a,
.learn-body .grid a[class*="bg-secondary"] {
    border-bottom: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.learn-body .grid a[class*="bg-secondary"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--foreground) 6%, transparent);
    border-color: color-mix(in srgb, var(--primary) 30%, var(--border)) !important;
}

/* ── Progress indicator — thin primary line at top ── */
.learn-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--primary);
    z-index: 9999;
    transition: width 0.1s linear;
    border-radius: 0 2px 2px 0;
}

/* ── Floating "Back to top" ── */
.learn-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card);
    color: var(--primary);
    border: 1px solid var(--border);
    border-radius: 50%;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--foreground) 10%, transparent);
    cursor: pointer;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.25s, transform 0.25s;
    z-index: 100;
    font-size: 1rem;
}

.learn-top-btn.visible {
    opacity: 1;
    transform: translateY(0);
}

.learn-top-btn:hover {
    background: var(--primary);
    color: var(--primary-foreground);
    border-color: var(--primary);
}

/* ── Reading time estimate decoration ── */
.learn-reading-estimate {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    background: var(--muted);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--muted-foreground);
}

/* ── Smooth reveal animation ── */
@keyframes learnFadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.learn-hero { animation: learnFadeUp 0.5s ease both; }
.learn-body { animation: learnFadeUp 0.5s ease 0.15s both; }

/* ── Responsive ── */
@media (max-width: 640px) {
    .learn-hero { padding: 2rem 0 1.75rem; }
    .learn-hero h1 { font-size: 1.5rem; }
    .learn-hero .learn-lede { font-size: 0.9375rem; padding: 1rem 1.25rem; }
    .learn-body { padding: 1.5rem 1rem 2rem; }
    .learn-body h2 { font-size: 1.3rem; margin-top: 2.25rem; padding-top: 1.5rem; }
    .learn-body p { font-size: 0.9375rem; }
    .learn-top-btn { bottom: 1rem; right: 1rem; }
}