/* ==========================================================================
   FALLOUT FACTIONS — Vault-Tec theme
   Palette: vault paper, Vault-Tec blue & yellow
   Type:    Russo One (display) + Exo 2 (body)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Russo+One&family=Exo+2:wght@400;500;600;700&display=swap');

/* ---------- Design tokens ---------- */

:root {
    color-scheme: light;

    --bg:          #f3efe4;
    --bg-2:        #e9e5d8;
    --panel:       #ffffff;
    --panel-2:     #f7fbff;
    --line:        #cfdcec;
    --line-strong: #0a66c2;

    --ink:         #102a43;
    --ink-dim:     #35547a;
    --ink-faint:   #6d89aa;

    /* Vault-Tec accents */
    --gold:        #0a66c2;      /* primary blue accent */
    --gold-bright: #074d9b;      /* darker blue for hover / emphasis on light bg */
    --blood:       #ffd23f;      /* Vault-Tec yellow */
    --blood-deep:  #b58900;      /* readable dark gold */

    /* faction hues (small accents only) */
    --fc-saxons:   #0a66c2;
    --fc-norsemen: #1f8fff;
    --fc-franks:   #b58900;
    --fc-britons:  #5aa9e6;
    --fc-avars:    #d9a400;

    --font-display: "Russo One", "Arial Black", "Helvetica Neue", Arial, sans-serif;
    --font-body:     "Exo 2", "Segoe UI", "Helvetica Neue", Arial, sans-serif;

    --nav-w:        300px;
    --radius:       4px;
}


/* ---------- Reset & base ---------- */

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg);
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1.02rem;
    line-height: 1.65;
    color: var(--ink);
    background-color: var(--bg);
    background-image:
        radial-gradient(1050px 540px at 92% -8%, rgba(255, 210, 63, .20), transparent 62%),
        radial-gradient(950px 520px at -8% 38%, rgba(10, 102, 194, .14), transparent 60%);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* Subtle Vault-Tec scanline / terminal texture */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 90;
    pointer-events: none;
    opacity: .28;
    background-image:
        repeating-linear-gradient(
            0deg,
            rgba(10, 74, 128, .035) 0 1px,
            transparent 1px 4px
        ),
        radial-gradient(circle at center, transparent 62%, rgba(16, 42, 67, .08));
}

::selection { background: var(--blood); color: var(--ink); }

h1, h2, h3, h4 {
    margin: 0 0 .5rem;
    line-height: 1.15;
    font-weight: 700;
    font-family: var(--font-display);
}

p  { margin: 0 0 1rem; }

a  {
    color: var(--gold);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover { color: var(--gold-bright); }

:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Scrollbars — Vault-Tec blue with yellow hover */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--blood); }


/* ---------- Accessibility helpers ---------- */

.skip-link {
    position: absolute; left: -999px; top: 0; z-index: 200;
    padding: .6rem 1rem;
    background: var(--gold);
    color: #ffffff;
}

.skip-link:focus { left: .5rem; top: .5rem; }

[id] { scroll-margin-top: 1.4rem; }


/* ---------- Layout ---------- */

.layout { display: block; }

.content {
    min-width: 0;
    padding: 1.25rem 1.1rem 3.5rem;
    max-width: 1080px;
    margin-inline: auto;
}

@media (min-width: 961px) {
    .layout { display: grid; grid-template-columns: var(--nav-w) minmax(0, 1fr); }
    .content { padding: clamp(1.5rem, 3vw, 2.75rem) clamp(1.25rem, 4vw, 3rem) 4rem; }
}


/* ---------- Sidebar navigation ---------- */

.sidenav {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: min(320px, 86vw);
    z-index: 130;
    overflow-y: auto;
    padding: 1.1rem .4rem 3rem;
    background: linear-gradient(180deg, #ffffff, #f3f7fc);
    border-right: 1px solid var(--line);
    box-shadow: inset -10px 0 26px rgba(10, 42, 67, .08);
    transform: translateX(-103%);
    transition: transform .3s ease;
}

.brand {
    display: flex; align-items: center; gap: .55rem;
    margin: 0 0 1.2rem; padding: 0 1rem;
    font-family: var(--font-display);
    font-size: 1.5rem; font-weight: 700; letter-spacing: .12em;
    color: var(--gold);
    text-shadow:
        0 1px 0 rgba(255, 255, 255, .65),
        0 2px 8px rgba(10, 102, 194, .18);
}

.nav-list, .nav-sub { list-style: none; margin: 0; padding: 0; }

.nav-toggle {
    text-align: left;
    display: flex; align-items: center; justify-content: space-between; gap: .5rem;
    width: 100%;
    padding: .62rem 1rem;
    background: none; border: 0; cursor: pointer;
    font-family: var(--font-body);
    font-size: .78rem; font-weight: 700;
    letter-spacing: .14em; text-transform: uppercase;
    color: var(--ink-dim);
    transition: color .2s ease, background-color .2s ease;
}

.nav-toggle:hover {
    color: var(--gold-bright);
    background: rgba(255, 210, 63, .14);
}

.nav-toggle::after {
    content: "▸"; font-size: .8rem; color: var(--ink-faint);
    transition: transform .25s ease;
}

.nav-group.is-open > .nav-toggle { color: var(--gold); }
.nav-group.is-open > .nav-toggle::after { transform: rotate(90deg); }

/* Smooth expand/collapse without measuring heights */
.nav-sub-wrap { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.nav-group.is-open > .nav-sub-wrap { grid-template-rows: 1fr; }

.nav-sub {
    overflow: hidden; min-height: 0;
    border-left: 1px solid var(--line);
    margin-left: 1.25rem;
}

.nav-sub a {
    display: block; position: relative;
    padding: .34rem .8rem .34rem 1.1rem;
    font-size: .93rem; color: var(--ink-faint); text-decoration: none;
    transition: color .2s ease, transform .2s ease, background-color .2s ease;
}

.nav-sub a:hover {
    color: var(--gold-bright);
    transform: translateX(3px);
    background: rgba(10, 102, 194, .06);
}

/* Scrollspy active state */
.nav-sub a.active {
    color: var(--gold);
    background: rgba(255, 210, 63, .18);
}

.nav-sub a.active::before {
    content: ""; position: absolute; left: -1px; top: 8%; bottom: 8%; width: 2px;
    background: linear-gradient(180deg, var(--blood), var(--gold));
}


/* Mobile drawer chrome */

#nav-burger {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
    position: fixed; top: .9rem; left: .9rem; z-index: 140;
    width: 46px; height: 46px; padding: 0; cursor: pointer;
    background: linear-gradient(160deg, #0a66c2, #074d9b);
    border: 1px solid #05386e;
    border-radius: var(--radius);
    box-shadow: 0 6px 16px rgba(10, 42, 67, .25);
}

#nav-burger span {
    display: block; width: 20px; height: 2px; margin-inline: auto;
    background: var(--blood); border-radius: 2px;
    transition: transform .3s ease, opacity .3s ease;
}

body.nav-open #nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open #nav-burger span:nth-child(2) { opacity: 0; }
body.nav-open #nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.scrim {
    position: fixed; inset: 0; z-index: 125;
    background: rgba(10, 42, 67, .58);
    opacity: 0; pointer-events: none; transition: opacity .3s ease;
}

body.nav-open .scrim { opacity: 1; pointer-events: auto; }
body.nav-open .sidenav { transform: translateX(0); }
body.nav-open { overflow: hidden; }

@media (min-width: 961px) {
    #nav-burger, .scrim { display: none; }

    .sidenav {
        position: sticky; top: 0; height: 100dvh; width: auto; transform: none;
        box-shadow: inset -8px 0 24px rgba(10, 42, 67, .08);
    }
}


/* ---------- Frontispiece (opening title block) ---------- */

#page-title {
    font-family: var(--font-display);
    font-size: clamp(3.2rem, 9vw, 5.6rem);
    font-weight: 800; letter-spacing: .03em;
    color: var(--ink); margin-bottom: .1rem;
    text-shadow:
        0 2px 18px rgba(255, 210, 63, .35),
        0 1px 0 #ffffff;
}

.subtitle {
    font-style: italic; color: var(--ink-dim); letter-spacing: .06em; margin-bottom: 1.3rem;
}

.meta-chips {
    display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem;
    list-style: none; margin: 0; padding: 0;
}

.chip {
    display: inline-block; padding: .18rem .7rem;
    font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-dim);
    border: 1px solid var(--line-strong);
    border-radius: 2px;
    background: rgba(255, 255, 255, .65);
}


/* ---------- Chapter titles & dividers ---------- */

.chapter { margin-bottom: 2.75rem; }

.chapter-title {
    display: flex; align-items: center; gap: .9rem;
    font-family: var(--font-display);
    font-size: clamp(1.9rem, 3.4vw, 2.6rem);
    font-weight: 700; color: var(--gold);
    margin-bottom: 1.5rem;
}

.ch-num {
    font-size: .5em; font-weight: 600;
    color: #102a43;
    background: var(--blood);
    border: 1px solid var(--blood-deep);
    padding: .18em .42em; border-radius: 2px;
    box-shadow: inset 0 -2px 0 rgba(7, 59, 110, .16);
}

.rule-line {
    flex: 1; height: 1px;
    background: linear-gradient(90deg, var(--line-strong), rgba(10, 102, 194, .35), transparent);
}

.divider {
    display: flex; align-items: center; gap: 1rem;
    margin: 0 auto 2.75rem; max-width: 420px;
    color: var(--blood-deep); font-size: .9rem;
}

.divider::before,
.divider::after {
    content: ""; flex: 1; height: 1px;
    background: linear-gradient(90deg, var(--line), var(--line-strong));
}


/* ---------- Panels (Vault-Tec cards with corner bolts) ---------- */

.panel {
    position: relative;
    margin-bottom: 1.5rem;
    padding: clamp(1.1rem, 2.6vw, 1.7rem) clamp(1rem, 3vw, 1.8rem);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background-color: var(--panel);
    background-image:
        radial-gradient(6px 6px at left 12px top 12px,
        #fff8d6 0%, #9db8d4 45%, rgba(7, 59, 110, .35) 70%, transparent 72%),
        radial-gradient(6px 6px at right 12px top 12px,
        #fff8d6 0%, #9db8d4 45%, rgba(7, 59, 110, .35) 70%, transparent 72%),
        radial-gradient(6px 6px at left 12px bottom 12px,
        #fff8d6 0%, #9db8d4 45%, rgba(7, 59, 110, .35) 70%, transparent 72%),
        radial-gradient(6px 6px at right 12px bottom 12px,
        #fff8d6 0%, #9db8d4 45%, rgba(7, 59, 110, .35) 70%, transparent 72%),
        linear-gradient(180deg, var(--panel-2), var(--panel));
    box-shadow:
        0 12px 30px rgba(10, 42, 67, .12),
        inset 0 1px 0 #ffffff;
    transition: border-color .25s ease, box-shadow .25s ease;
}

.panel:hover {
    border-color: var(--line-strong);
    box-shadow:
        0 16px 38px rgba(10, 42, 67, .18),
        inset 0 1px 0 #ffffff;
}


/* ==========================================================================
   Collapsible rule panels
   ========================================================================== */

.rule-panel .block-title {
    display: flex;
    align-items: center;
    gap: .55rem;
    margin-bottom: 0;
}

.rule-panel.is-open .block-title {
    margin-bottom: .9rem;
}

.rule-panel .rule-toggle {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    width: 100%;
    padding: 0;
    border: 0;
    background: none;
    font: inherit;
    color: inherit;
    text-align: left;
    cursor: pointer;
}

.rule-panel .rule-toggle:hover {
    color: var(--gold-bright);
}

.rule-panel .rule-toggle-text {
    min-width: 0;
    overflow-wrap: anywhere;
}

.rule-panel .rule-toggle-icon {
    flex: none;
    width: 1.25rem;
    height: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--blood-deep);
}

.rule-panel .rule-toggle-icon::before {
    content: "▸";
    font-size: .9em;
    line-height: 1;
    transition: transform .25s ease;
}

.rule-panel.is-open .rule-toggle-icon::before {
    transform: rotate(90deg);
}

/* Collapsible rule body */
.rule-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows .3s ease;
}

.rule-panel.is-open .rule-body {
    grid-template-rows: 1fr;
}

.rule-body-inner {
    min-height: 0;
    overflow: hidden;
}


.block-title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.4vw, 1.6rem);
    font-weight: 700; color: var(--gold); margin-bottom: .8rem;
}


/* Vault-Tec drop cap */
.dropcap::first-letter {
    float: left;
    font-family: var(--font-display); font-weight: 800;
    font-size: 4.4rem; line-height: .82;
    padding: .38rem .55rem .18rem; margin: .16rem .75rem 0 0;
    color: #102a43;
    background: linear-gradient(160deg, var(--blood), #ffbf00);
    border: 1px solid var(--blood-deep);
    box-shadow:
        inset 0 0 0 2px rgba(7, 59, 110, .20),
        0 5px 12px rgba(10, 42, 67, .18);
}


.flavor {
    font-style: italic; color: var(--ink-dim);
    border-left: 4px solid var(--blood);
    padding: .65rem 1rem; margin-top: 1.1rem;
    background: rgba(10, 102, 194, .05);
}


/* ---------- Lists ---------- */

.plain-list, .rules-list, .steps { padding-left: 1.25rem; }
.plain-list li, .rules-list li, .steps li { margin-bottom: .45rem; }

.rules-list li::marker { content: "❖  "; color: var(--gold); font-size: .8em; }

.steps li::marker {
    font-family: var(--font-display); font-weight: 700; font-size: 1.25em; color: var(--blood-deep);
}


/* ---------- Tables (mobile-safe) ---------- */

.table-wrap {
    overflow-x: auto;                       /* the key to big tables on phones */
    -webkit-overflow-scrolling: touch;
    margin: .9rem 0; padding: .15rem;
    border: 1px solid var(--line); border-radius: var(--radius);
    background: #f7fbff;
}

table { width: 100%; border-collapse: collapse; font-size: .94rem; }
.t-wide   { min-width: 780px; }
.t-mid    { min-width: 620px; }
.t-narrow { min-width: 430px; }

caption {
    caption-side: top; text-align: left;
    padding: .55rem .9rem .15rem;
    font-family: var(--font-display); font-size: 1.02rem; color: var(--gold-bright);
}

thead th {
    background: linear-gradient(180deg, #eaf3ff, #dcecff);
    color: #074d9b; text-align: left; white-space: nowrap;
    font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    padding: .65rem .85rem; border-bottom: 2px solid var(--line-strong);
}

tbody th[scope="row"] { font-weight: 700; color: var(--ink); white-space: nowrap; }

tbody td, tbody th[scope="row"] {
    padding: .55rem .85rem;
    border-top: 1px solid rgba(10, 102, 194, .18);
    vertical-align: top;
}

tbody tr:nth-child(even) { background: rgba(10, 102, 194, .05); }
tbody tr:hover           { background: rgba(255, 210, 63, .18); }

.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.dim { color: var(--ink-faint); font-size: .82em; }
.table-note { font-size: .87rem; color: var(--ink-faint); margin-top: .4rem; }


/* Faction tags */

.tag {
    display: inline-flex; align-items: center; gap: .45rem; white-space: nowrap;
    font-size: .86rem; color: var(--ink-dim);
}

.tag::before {
    content: ""; width: 7px; height: 7px; border-radius: 50%;
    background: var(--fc, var(--blood)); flex: none;
}

.f-saxons   { --fc: var(--fc-saxons); }
.f-norsemen { --fc: var(--fc-norsemen); }
.f-franks   { --fc: var(--fc-franks); }
.f-britons  { --fc: var(--fc-britons); }
.f-avars    { --fc: var(--fc-avars); }


/* Sortable headers */

.sort-btn {
    display: inline-flex; align-items: center; gap: .4rem; cursor: pointer;
    background: none; border: 0; padding: 0; margin: 0;
    font: inherit; color: inherit; letter-spacing: inherit; text-transform: inherit;
}

.sort-btn:hover { color: var(--gold-bright); }

.sort-btn .arrow::after { content: "↕"; opacity: .45; font-size: .9em; }
.sort-btn.asc  .arrow::after { content: "↑"; opacity: 1; color: var(--gold-bright); }
.sort-btn.desc .arrow::after { content: "↓"; opacity: 1; color: var(--gold-bright); }


/* ---------- Factions ---------- */

.faction { --fc: var(--gold); }

.f-saxons   { --fc: var(--fc-saxons); }
.f-norsemen { --fc: var(--fc-norsemen); }
.f-franks   { --fc: var(--fc-franks); }
.f-britons  { --fc: var(--fc-britons); }
.f-avars    { --fc: var(--fc-avars); }

.faction .block-title::before {
    content: "◆ "; color: var(--fc); font-size: .75em; vertical-align: .12em;
}

.faction .flavor { border-left-color: var(--fc); }


/* ---------- Scenarios ---------- */

.scenario-head {
    display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
    gap: .6rem; margin-bottom: .5rem;
}

.scenario-head .block-title { margin-bottom: 0; }

.chips { display: flex; flex-wrap: wrap; gap: .45rem; margin: 0; }


/* ---------- Omen (weather roller) ---------- */

.omen {
    margin-top: 1.2rem; padding: 1rem 1.1rem 1.15rem;
    border: 1px dashed var(--line-strong); border-radius: var(--radius);
    background: rgba(255, 255, 255, .65);
}

.omen h4 {
    font-family: var(--font-display); font-size: 1.15rem; color: var(--gold); margin-bottom: .2rem;
}

.omen-hint { font-size: .9rem; color: var(--ink-faint); margin-bottom: .8rem; }

.dice-row { display: flex; align-items: center; gap: .7rem; margin-bottom: .9rem; }

.die {
    width: 3.1rem; height: 3.1rem; display: grid; place-items: center;
    font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; color: #102a43;
    background: linear-gradient(160deg, #fff8d6, var(--blood));
    border: 1px solid var(--blood-deep); border-radius: 6px;
    box-shadow:
        inset 0 -4px 7px rgba(7, 59, 110, .18),
        0 5px 10px rgba(10, 42, 67, .18);
}

.die.rolling { animation: die-shake .13s linear infinite; }

@keyframes die-shake {
    0%   { transform: rotate(-9deg) translateY(0); }
    50%  { transform: rotate(9deg) translateY(-4px); }
    100% { transform: rotate(-9deg) translateY(0); }
}

.omen-total { font-family: var(--font-display); font-size: 1.6rem; color: var(--ink-dim); min-width: 2ch; }

.omen-result {
    min-height: 2.7rem; margin: .8rem 0 0;
    font-style: italic; color: var(--gold-bright);
    opacity: 0; transition: opacity .4s ease;
}

.omen-result.show { opacity: 1; }


/* ---------- Buttons ---------- */

.btn {
    cursor: pointer;
    padding: .55rem 1.3rem;
    font-family: var(--font-body); font-size: .82rem; font-weight: 700;
    letter-spacing: .12em; text-transform: uppercase; color: #102a43;
    background: linear-gradient(160deg, #ffe066, var(--blood));
    border: 1px solid var(--blood-deep); border-radius: var(--radius);
    transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
}

.btn:hover {
    border-color: var(--gold);
    color: #074d9b;
    box-shadow: 0 4px 18px rgba(10, 102, 194, .25);
    transform: translateY(-1px);
}

.btn:active { transform: translateY(1px); box-shadow: none; }
.btn[disabled] { opacity: .55; cursor: wait; }


/* ---------- Footer (Vault-Tec blue service bar) ---------- */

.site-footer {
    border-top: 3px double var(--line-strong);
    background: linear-gradient(180deg, #074d9b, #0a66c2);
    padding: 2rem 1.25rem;
}

.footer-inner {
    max-width: 1080px; margin-inline: auto;
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
}

.footer-brand {
    display: flex; align-items: center; gap: .5rem; margin: 0;
    font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; letter-spacing: .1em;
    color: var(--blood);
    text-shadow: 0 1px 0 rgba(0, 0, 0, .25);
}

.footer-nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }

.footer-nav a {
    font-size: .85rem; letter-spacing: .06em; text-transform: uppercase;
    color: #dcecff; text-decoration: none;
}

.footer-nav a:hover { color: var(--blood); }

.fineprint {
    margin: 0; width: 100%; font-size: .8rem;
    color: rgba(237, 244, 255, .78);
    border-top: 1px solid rgba(237, 244, 255, .25);
    padding-top: .9rem;
}


/* ---------- Motion (only when the user allows it) ---------- */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}