/* ─────────────────────────────────────────────────────────────────────
   graysonsSongStg2CTrainingStyles.css
   TNT | CreativeCrossTraining/GraysonsSong2026-10-19
   Three-language App Comparison — JS / Java / Python
   Language color key: Yellow = JS  |  Blue = Java  |  Green = Python
──────────────────────────────────────────────────────────────────────── */

:root {
    --gs-dark:  #07091c;
    --gs-navy:  #0d1230;
    --gs-gold:  #ffd740;
    --gs-teal:  #2eb88a;

    /* Language paper colors */
    --js-paper:    #fefce8;   --js-border:  #a16207;   --js-header-bg: #713f12; --js-header-fg: #fef9c3;
    --java-paper:  #eff6ff;   --java-border:#1d4ed8;   --java-header-bg:#1e3a8a;--java-header-fg:#dbeafe;
    --py-paper:    #f0fdf4;   --py-border:  #16a34a;   --py-header-bg: #14532d; --py-header-fg: #dcfce7;

    /* Code highlighting (shared) */
    --ct-keyword: #0055cc;
    --ct-comment: #6a737d;
    --ct-string:  #006400;
    --ct-number:  #c0450a;
}

body { font-family: 'Inter', sans-serif; background: var(--gs-dark); color: #e8e8f0; }

/* ── Navbar (inherits from tnt-base-styles) ─────────────── */

/* ── Spark bar ────────────────────────────────────────────── */
.spark-bar {
    background: var(--gs-navy);
    padding: 0.52rem 1.2rem;
    display: flex; align-items: center; flex-wrap: wrap; gap: 1.2rem;
    border-bottom: 2px solid var(--gs-teal); font-size: 0.88rem;
}
.spark-links { display: flex; gap: 1.2rem; align-items: center; flex-wrap: wrap; }
.spark-links a { color: var(--gs-teal); font-weight: 700; text-decoration: none; }
.spark-links a:hover { color: #fff; text-decoration: underline; }
.spark-bar > span { color: rgba(255,255,255,0.35); font-size: 0.80rem; margin-left: auto; }

/* ── Hero ─────────────────────────────────────────────────── */
#hero {
    background:
        linear-gradient(to bottom,
            rgba(5, 8, 25, 0.65) 0%,
            rgba(5, 8, 25, 0.38) 40%,
            rgba(5, 8, 25, 0.78) 100%),
        url('../images/graysonsSong-web.gif') center 30% / cover no-repeat;
    background-color: var(--gs-dark);
    padding: 3.5rem 1rem 2.5rem;
    text-align: center;
    color: #fff;
}

.hero-content { max-width: 800px; margin: 0 auto; }

.hero-eyebrow {
    font-size: 0.72rem; letter-spacing: 3px; text-transform: uppercase;
    color: rgba(255,255,255,0.55); display: block; margin-bottom: 0.6rem;
    text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}

.hero-title {
    font-family: 'Boogaloo', cursive;
    font-size: clamp(1.8rem, 4.5vw, 3rem);
    line-height: 1.15; margin-bottom: 0.7rem;
    color: var(--gs-gold);
    text-shadow: 0 0 28px rgba(255,215,64,0.4), 0 2px 8px rgba(0,0,0,0.8);
}

.hero-subtitle {
    font-size: clamp(0.88rem, 2vw, 1.02rem);
    color: rgba(255,255,255,0.78); line-height: 1.65;
    max-width: 660px; margin: 0 auto;
    text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}

/* ── Language key pills ───────────────────────────────────── */
.lang-key {
    display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
    margin-top: 1.1rem;
}
.lang-key-pill {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50px; padding: 0.25rem 0.75rem;
    font-size: 0.80rem; color: rgba(255,255,255,0.75);
}
.lk-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.lk-dot-js   { background: #ca8a04; }
.lk-dot-java { background: #1d4ed8; }
.lk-dot-py   { background: #16a34a; }

/* ── Concepts section ─────────────────────────────────────── */
#concepts {
    background: var(--gs-navy);
    padding: 3rem 0;
    border-top: 1px solid rgba(255,215,64,0.10);
    border-bottom: 1px solid rgba(255,215,64,0.10);
}

.concepts-label {
    font-size: 0.70rem; letter-spacing: 3px; text-transform: uppercase;
    color: var(--gs-teal); margin-bottom: 0.35rem;
}

.concepts-title {
    font-family: 'Boogaloo', cursive;
    font-size: clamp(1.5rem, 3.5vw, 2.1rem);
    color: var(--gs-gold); margin-bottom: 0.5rem;
}

.concepts-sub {
    font-size: 0.92rem; color: rgba(255,255,255,0.60);
    max-width: 640px; line-height: 1.65; margin-bottom: 2rem;
}

.concept-card {
    background: var(--gs-dark);
    border: 1px solid rgba(255,215,64,0.13);
    border-radius: 12px;
    padding: 1.3rem 1.2rem;
    height: 100%;
}

.concept-card-icon {
    font-size: 1.5rem; color: var(--gs-gold);
    margin-bottom: 0.6rem;
}

.concept-card-title {
    font-weight: 700; font-size: 0.92rem;
    color: rgba(255,255,255,0.88);
    margin-bottom: 0.45rem; line-height: 1.3;
}

.concept-card-body {
    font-size: 0.83rem; color: rgba(255,255,255,0.62); line-height: 1.6;
    margin-bottom: 0.6rem;
}

/* Language comparison row in concept card */
.concept-lang-row {
    display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.5rem;
}

.clb {
    font-family: 'Source Code Pro', monospace; font-size: 0.70rem;
    padding: 0.15rem 0.55rem; border-radius: 4px;
}
.clb-js   { background: #fef9c3; color: #713f12; border: 1px solid #ca8a04; }
.clb-java { background: #dbeafe; color: #1e3a8a; border: 1px solid #1d4ed8; }
.clb-py   { background: #dcfce7; color: #14532d; border: 1px solid #16a34a; }

.formula {
    display: block; font-family: 'Source Code Pro', monospace;
    font-size: 0.78rem; color: var(--gs-teal);
    background: rgba(46,184,138,0.08);
    border-left: 3px solid var(--gs-teal);
    padding: 0.45rem 0.75rem; border-radius: 0 6px 6px 0;
    line-height: 1.8; margin-top: 0.4rem;
}

/* ── Code comparison section ──────────────────────────────── */
#codeComparison { padding: 3rem 0 2rem; }

.code-section-label {
    font-size: 0.70rem; letter-spacing: 3px; text-transform: uppercase;
    color: var(--gs-teal); margin-bottom: 0.35rem;
}

.code-section-title {
    font-family: 'Boogaloo', cursive;
    font-size: clamp(1.5rem, 3.5vw, 2.1rem);
    color: var(--gs-gold); margin-bottom: 0.5rem;
}

.code-section-sub {
    font-size: 0.88rem; color: rgba(255,255,255,0.55);
    margin-bottom: 2rem;
}

/* ── Three-panel language columns ────────────────────────── */
.lang-panel {
    border-radius: 12px; overflow: hidden;
    display: flex; flex-direction: column;
    box-shadow: 0 4px 20px rgba(0,0,0,0.40);
}

/* Colored code papers — fixed height for independent panel scrolling */
.code-paper {
    overflow-x: auto;
    overflow-y: auto;
    height: 560px;
}
.lang-header {
    padding: 0.6rem 0.85rem;
    display: flex; align-items: center; gap: 0.6rem;
    font-size: 0.82rem; font-weight: 700;
}
.lang-header-js   { background: var(--js-header-bg);   color: var(--js-header-fg); }
.lang-header-java { background: var(--java-header-bg);  color: var(--java-header-fg); }
.lang-header-py   { background: var(--py-header-bg);    color: var(--py-header-fg); }

.lang-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.lang-dot-js   { background: #fde68a; }
.lang-dot-java { background: #93c5fd; }
.lang-dot-py   { background: #86efac; }

.lang-name     { font-size: 0.88rem; font-weight: 700; flex: 1; }
.lang-filename { font-family: 'Source Code Pro', monospace; font-size: 0.72rem; opacity: 0.70; }

/* Copy button in panel header */
.lang-copy-btn {
    background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.80); border-radius: 5px; padding: 0.22rem 0.55rem;
    font-size: 0.70rem; cursor: pointer; display: flex; align-items: center; gap: 0.3rem;
    transition: background 0.2s; margin-left: auto;
}
.lang-copy-btn:hover { background: rgba(255,255,255,0.22); color: #fff; }
.copy-label { font-weight: 600; }

/* Colored code papers */
.code-paper-js   { background: var(--js-paper);   border: 1px solid var(--js-border); }
.code-paper-java { background: var(--java-paper);  border: 1px solid var(--java-border); }
.code-paper-py   { background: var(--py-paper);    border: 1px solid var(--py-border); }

.code-paper ol {
    margin: 0; padding: 0;
    list-style-type: decimal; padding-left: 3rem;
    font-family: 'Source Code Pro', 'Courier New', monospace;
    font-size: 0.74rem; line-height: 1.60;
}

.code-paper ol li { padding: 0 0.6rem 0 0.3rem; white-space: pre; }

/* Alternating greenbar stripe */
.code-paper-js li:nth-child(even)   { background: rgba(202,138,7,0.06); }
.code-paper-java li:nth-child(even) { background: rgba(29,78,216,0.05); }
.code-paper-py li:nth-child(even)   { background: rgba(22,163,74,0.05); }

.code-paper ol li::marker { font-size: 0.66rem; color: #999; }
.code-paper ol li code    { font-family: inherit; font-size: inherit; background: none; padding: 0; white-space: pre; }

.code-paper-js   li code { color: #3a2000; }
.code-paper-java li code { color: #0d1a3a; }
.code-paper-py   li code { color: #0a2010; }

/* Code syntax spans (applied by highlighter) */
.ct-keyword { color: #0055cc; font-weight: 600; }
.ct-comment { color: var(--ct-comment); font-style: italic; }
.ct-string  { color: var(--ct-string); }
.ct-number  { color: var(--ct-number); }

/* Panel footer bar */
.lang-footer {
    padding: 0.5rem 0.85rem;
    font-size: 0.74rem;
}
.lang-footer-js   { background: #fef08a; color: #713f12; border-top: 1px solid var(--js-border); }
.lang-footer-java { background: #bfdbfe; color: #1e3a8a; border-top: 1px solid var(--java-border); }
.lang-footer-py   { background: #bbf7d0; color: #14532d; border-top: 1px solid var(--py-border); }
.lang-footer a    { font-weight: 700; text-decoration: underline; }
.lang-footer-js   a { color: #713f12; }
.lang-footer-java a { color: #1e3a8a; }
.lang-footer-py   a { color: #14532d; }

/* ── Copy-note callout ────────────────────────────────────── */
.copy-note {
    background: rgba(255,215,64,0.07);
    border: 1px solid rgba(255,215,64,0.25);
    border-left: 4px solid var(--gs-gold);
    border-radius: 0 8px 8px 0;
    padding: 0.85rem 1.1rem; margin-top: 1.5rem;
    font-size: 0.85rem; color: rgba(255,255,255,0.75); line-height: 1.65;
}
.copy-note strong { color: var(--gs-gold); }
.copy-note code   { background: rgba(255,215,64,0.12); padding: 1px 5px; border-radius: 3px; font-size: 0.82em; }

/* ── Cross-training note card ─────────────────────────────── */
.note-card {
    background: var(--gs-navy);
    border: 1px solid rgba(46,184,138,0.20);
    border-radius: 12px; padding: 1.4rem 1.75rem;
    margin-top: 2rem;
}
.note-card h3 { font-family: 'Boogaloo', cursive; font-size: 1.3rem; color: var(--gs-teal); margin-bottom: 0.6rem; }
.note-card p  { font-size: 0.88rem; color: rgba(255,255,255,0.65); line-height: 1.72; margin-bottom: 0.6rem; }
.note-card p:last-child { margin-bottom: 0; }

/* ── Page navigation bar ─────────────────────────────────── */
#pageNav {
    background: var(--gs-navy);
    border-top: 2px solid rgba(46,184,138,0.20);
    padding: 1rem 0;
}
.nav-links { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; }
.nav-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.5rem 1.1rem; border-radius: 8px; border: 2px solid;
    font-weight: 700; font-size: 0.85rem; text-decoration: none;
    transition: background 0.2s, color 0.2s;
}
.nav-btn-back  { background: transparent; color: rgba(255,255,255,0.65); border-color: rgba(255,255,255,0.25); }
.nav-btn-back:hover  { background: rgba(255,255,255,0.08); color: #fff; }
.nav-btn-live  { background: var(--gs-teal); color: #fff; border-color: var(--gs-teal); }
.nav-btn-live:hover  { background: var(--gs-teal-dk, #1e8a64); border-color: var(--gs-teal-dk, #1e8a64); }
.nav-btn-log   { background: transparent; color: var(--gs-gold); border-color: var(--gs-gold); }
.nav-btn-log:hover   { background: rgba(255,215,64,0.08); }

/* ── Footer ───────────────────────────────────────────────── */
footer { background: #040410; border-top: 2px solid rgba(46,184,138,0.14); padding: 2rem 0 1.5rem; text-align: center; }
.footer-icons { display: flex; justify-content: center; gap: 1.25rem; margin-bottom: 1rem; flex-wrap: wrap; list-style: none; padding: 0; }
.footer-icons a img { width: 28px; height: 28px; opacity: 0.45; transition: opacity 0.2s; }
.footer-icons a:hover img { opacity: 0.80; }
.footer-text { font-size: 0.80rem; color: rgba(255,255,255,0.32); line-height: 1.7; margin-bottom: 0.25rem; }