/* ============================================================
   Wordist Hub — Global Styles
   Theme variables, base reset, marquee, scrollbar, utilities.
   ============================================================ */

/* ──────────────────────────────────────────────────────────────
   THEME: DARK  (default)
   Applied when <html data-theme="dark"> (or unset).
   ────────────────────────────────────────────────────────────── */
:root,
[data-theme="dark"] {
    /* ── Site palette ── */
    --color-bg: #0A0E1A;
    --color-surface: #111827;
    --color-panel: #1F2937;
    --color-border: #374151;
    --color-violet: #7C3AED;
    --color-violet-lt: #A78BFA;
    --color-teal: #0D9488;
    --color-gold: #F59E0B;
    --color-text: #F1F5F9;
    --color-muted: #94A3B8;
    /* ── Tile skin: Classic Ivory ── */
    --tile-bg: #F5F0E8;
    --tile-bg-end: #E6DDC8;
    --tile-shadow-clr: #A89870;
    --tile-letter-clr: #1A1A2E;
    --tile-score-clr: #4A3E28;
    --tile-border-clr: #CEC0A4;
    /* ── Layout chrome ── */
    --banner-bg: linear-gradient(180deg, #0D1220 0%, #111827 100%);
    --banner-border: #1F2937;
    --banner-shadow: 0 1px 0 rgba(124, 58, 237, 0.25), 0 4px 24px rgba(0, 0, 0, 0.4);
    --nav-bg: #0F1629;
    --nav-border: #1F2937;
    --marquee-bg: #080C18;
    --marquee-border: rgba(124, 58, 237, 0.35);
    --marquee-text: #94A3B8;
    --marquee-shadow: inset 0 1px 0 rgba(124, 58, 237, 0.2);
    /* ── Input / form elements ── */
    --input-bg: #1F2937;
    --input-border: #374151;
    --input-text: #F1F5F9;
    --input-placeholder: #64748B;
    /* ── Dropdown / popover ── */
    --popup-bg: #1A2035;
    --popup-border: #2D3748;
    --popup-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    /* ── Card / content surfaces ── */
    --color-surface-2: #1E1E2E;
    --color-surface-3: #16162A;
    /* ── Game: grid cells ── */
    --cell-bg: #1A2035;
    --cell-border: #2A3550;
    --cell-selected: rgba(124, 58, 237, 0.25);
    /* ── Game: modifier badges ── */
    --mod-word-bg: rgba(16, 185, 129, 0.12);
    --mod-word-border: rgba(16, 185, 129, 0.4);
    --mod-word-text: #10B981;
    --mod-letter-bg: rgba(59, 130, 246, 0.12);
    --mod-letter-border: rgba(59, 130, 246, 0.4);
    --mod-letter-text: #60A5FA;
    /* ── Game: stage & HUD ── */
    --stage-bg: var(--board-surface, #131928);
    --stage-border: rgba(124, 58, 237, 0.3);
    --hud-bg: rgba(17, 24, 39, 0.95);
    --hud-border: rgba(124, 58, 237, 0.2);
    /* ── Game components (WASM tile/grid/stage variables) ── */
    --color-accent: #8B5CF6;
    --color-accent-hover: #7C3AED;
    --color-text-primary: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --tile-size: 58px;
    --tile-bg: #2A2A3A;
    --tile-text: #E0D8FF;
    --tile-border: #3D3D55;
    --tile-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
    --tile-selected-bg: #8B5CF6;
    --tile-selected-text: #ffffff;
    --tile-selected-glow: 0 4px 12px rgba(139, 92, 246, 0.45);
    --grid-bg: #14141E;
    --grid-cell-bg: #1A1A28;
    --grid-cell-border: #2A2A3D;
    --grid-cell-hover: #2D2A45;
    --grid-row0-highlight: rgba(139, 92, 246, 0.15);
    --grid-row0-highlight-border: #8B5CF6;
    --stage-slot-bg: var(--board-surface, #1A1A28);
    --stage-slot-border: var(--board-border, #2A2A3D);
    --cell-2x-letter-bg: #142238;
    --cell-3x-letter-bg: #142238;
    --cell-4x-letter-bg: #142238;
    --cell-5x-letter-bg: #142238;
    --cell-2x-word-bg: #2A1A2A;
    --cell-3x-word-bg: #381438;
    /* ── Board-area theming (overridable by board skins) ── */
    --board-surface: #111827;
    --board-border: #374151;
    --board-text: #F1F5F9;
    --board-text-secondary: #94A3B8;
    --board-accent: #8B5CF6;
    --board-accent-hover: #7C3AED;
    --board-accent-glow: rgba(139, 92, 246, 0.3);
    --board-btn-text: #fff;
    --board-error: #ef4444;
    --board-error-bg: #7f1d1d;
    --board-error-text: #fecaca;
    --board-bonus: #F59E0B;
    --board-bonus-glow: rgba(245, 158, 11, 0.08);
    --board-og: #d97706;
    --board-og-hover: #b45309;
}

/* ──────────────────────────────────────────────────────────────
   THEME: LIGHT
   Applied when <html data-theme="light">.
   ────────────────────────────────────────────────────────────── */
[data-theme="light"] {
    /* ── Site palette ── */
    --color-bg: #F0F4FF;
    --color-surface: #FFFFFF;
    --color-panel: #F1F5F9;
    --color-border: #CBD5E1;
    --color-violet: #7C3AED;
    --color-violet-lt: #6D28D9;
    --color-teal: #0F766E;
    --color-gold: #D97706;
    --color-text: #0F172A;
    --color-muted: #64748B;
    /* ── Tile skin: Classic Ivory (same in both themes) ── */
    --tile-bg: #F5F0E8;
    --tile-bg-end: #E6DDC8;
    --tile-shadow-clr: #A89870;
    --tile-letter-clr: #1A1A2E;
    --tile-score-clr: #4A3E28;
    --tile-border-clr: #CEC0A4;
    /* ── Layout chrome ── */
    --banner-bg: linear-gradient(180deg, #EEF2FF 0%, #E8EFFF 100%);
    --banner-border: #C7D2FE;
    --banner-shadow: 0 1px 0 rgba(124, 58, 237, 0.2), 0 4px 16px rgba(99, 102, 241, 0.1);
    --nav-bg: #E0E7FF;
    --nav-border: #C7D2FE;
    --marquee-bg: #EEF2FF;
    --marquee-border: rgba(124, 58, 237, 0.25);
    --marquee-text: #64748B;
    --marquee-shadow: inset 0 1px 0 rgba(124, 58, 237, 0.1);
    /* ── Input / form elements ── */
    --input-bg: #FFFFFF;
    --input-border: #CBD5E1;
    --input-text: #0F172A;
    --input-placeholder: #94A3B8;
    /* ── Dropdown / popover ── */
    --popup-bg: #FFFFFF;
    --popup-border: #E2E8F0;
    --popup-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    /* ── Card / content surfaces ── */
    --color-surface-2: #FFFFFF;
    --color-surface-3: #F8FAFC;
    /* ── Game: grid cells ── */
    --cell-bg: #E8EFFF;
    --cell-border: #C7D2FE;
    --cell-selected: rgba(124, 58, 237, 0.15);
    /* ── Game: modifier badges ── */
    --mod-word-bg: rgba(16, 185, 129, 0.1);
    --mod-word-border: rgba(16, 185, 129, 0.4);
    --mod-word-text: #059669;
    --mod-letter-bg: rgba(59, 130, 246, 0.1);
    --mod-letter-border: rgba(59, 130, 246, 0.4);
    --mod-letter-text: #2563EB;
    /* ── Game: stage & HUD ── */
    --stage-bg: var(--board-surface, #EEF2FF);
    --stage-border: rgba(124, 58, 237, 0.25);
    --hud-bg: rgba(255, 255, 255, 0.95);
    --hud-border: rgba(124, 58, 237, 0.2);
    /* ── Game components (WASM tile/grid/stage variables) ── */
    --color-accent: #8B5CF6;
    --color-accent-hover: #7C3AED;
    --color-text-primary: #0F172A;
    --color-text-secondary: #64748B;
    --tile-size: 58px;
    --tile-bg: #FFFFFF;
    --tile-text: #1A1A2E;
    --tile-border: #D0C8F0;
    --tile-shadow: 0 2px 6px rgba(139, 92, 246, 0.15);
    --tile-selected-bg: #8B5CF6;
    --tile-selected-text: #ffffff;
    --grid-bg: #E8E4F4;
    --grid-cell-bg: #F5F3FF;
    --grid-cell-border: #D8D0F0;
    --grid-cell-hover: #EDE8FF;
    --grid-row0-highlight: rgba(139, 92, 246, 0.12);
    --grid-row0-highlight-border: #8B5CF6;
    --stage-slot-bg: var(--board-surface, #F5F3FF);
    --stage-slot-border: var(--board-border, #C8C0E8);
    --cell-2x-letter-bg: #E0F0FF;
    --cell-3x-letter-bg: #CCE6FF;
    --cell-2x-word-bg: #FFE0FF;
    --cell-3x-word-bg: #FFCCFF;
    /* ── Board-area theming (overridable by board skins) ── */
    --board-surface: #FFFFFF;
    --board-border: #CBD5E1;
    --board-text: #0F172A;
    --board-text-secondary: #64748B;
    --board-accent: #8B5CF6;
    --board-accent-hover: #7C3AED;
    --board-accent-glow: rgba(139, 92, 246, 0.2);
    --board-btn-text: #fff;
    --board-error: #ef4444;
    --board-error-bg: #fef2f2;
    --board-error-text: #991b1b;
    --board-bonus: #D97706;
    --board-bonus-glow: rgba(217, 119, 6, 0.08);
    --board-og: #d97706;
    --board-og-hover: #b45309;
}

/* ──────────────────────────────────────────────────────────────
   BASE RESET
   ────────────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Nunito', system-ui, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
}

/* ──────────────────────────────────────────────────────────────
   SCROLLBAR (Webkit)
   ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-violet);
    border-radius: 3px;
}

/* ──────────────────────────────────────────────────────────────
   MARQUEE ANIMATION
   ────────────────────────────────────────────────────────────── */
.marquee-inner {
    display: inline-block;
    white-space: nowrap;
    will-change: transform;
    /* Animation driven by JS (marquee-live.js) for jerk-free dynamic content updates. */
}

/* ──────────────────────────────────────────────────────────────
   ICON BUTTON
   ────────────────────────────────────────────────────────────── */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--color-muted);
    border-radius: 50%;
    cursor: pointer;
    transition: color 0.2s ease, background-color 0.2s ease, transform 0.15s ease;
    text-decoration: none;
}

    .icon-btn:hover {
        color: var(--color-text);
        background-color: rgba(124, 58, 237, 0.15);
        transform: scale(1.1);
    }

    .icon-btn svg {
        width: 22px;
        height: 22px;
        stroke-width: 1.75;
    }

/* ──────────────────────────────────────────────────────────────
   AUTH NAV (AuthNav WASM component)
   ────────────────────────────────────────────────────────────── */
.auth-handle {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent);
    padding: 0 0.25rem;
}

.auth-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-muted);
    text-decoration: none;
    padding: 0 0.25rem;
    transition: color 0.15s;
}

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

.auth-link-accent {
    color: var(--color-accent);
    font-weight: 700;
}

    .auth-link-accent:hover {
        color: var(--color-accent-hover);
    }

.auth-sep {
    font-size: 0.75rem;
    color: var(--color-border);
    padding: 0 0.1rem;
}

/* ──────────────────────────────────────────────────────────────
   NAV LINK
   ────────────────────────────────────────────────────────────── */
.nav-link-item {
    position: relative;
    color: var(--color-muted);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0 4px;
    transition: color 0.2s ease;
}

    .nav-link-item::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 0;
        height: 2px;
        background: var(--color-violet);
        border-radius: 1px;
        transition: width 0.25s ease;
    }

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

        .nav-link-item:hover::after,
        .nav-link-item.active::after {
            width: 100%;
        }

    .nav-link-item.active {
        color: var(--color-violet-lt);
    }

/* ──────────────────────────────────────────────────────────────
   FOCUS MANAGEMENT
   FocusOnNavigate (Routes.razor) programmatically focuses the
   first <h1> after every route change for screen-reader support.
   Suppress the focus ring entirely: h1 elements are not in the
   natural tab order, so they are only ever focused via this JS
   call — never by keyboard Tab navigation.  On initial page load
   (before any pointer interaction) browsers classify programmatic
   focus as "keyboard-context", which makes :focus-visible always
   true in that moment, so :focus:not(:focus-visible) is not
   sufficient here.
   ────────────────────────────────────────────────────────────── */
h1:focus {
    outline: none;
}

/* ──────────────────────────────────────────────────────────────
   BLAZOR ERROR BOUNDARY
   ────────────────────────────────────────────────────────────── */
.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDggNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, #7f1d1d;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    border-radius: 6px;
    margin: 1rem;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

/* ──────────────────────────────────────────────────────────────
   RESPONSIVE — MOBILE
   ────────────────────────────────────────────────────────────── */
@media (max-width: 850px) {
    .top-banner {
        grid-template-columns: auto 1fr !important;
    }

    .banner-center {
        display: none !important;
    }
}


/* ──────────────────────────────────────────────────────────────
   TILE ANIMATIONS (global scope — applied by JS, not Blazor-scoped)
   These must live in the host app.css so they cascade into the
   WASM-rendered game components.
   ────────────────────────────────────────────────────────────── */

@keyframes tile-land {
    0%   { transform: translateY(-20px) scale(0.85); opacity: 0; }
    55%  { transform: translateY(3px) scale(1.04); opacity: 1; }
    75%  { transform: translateY(-2px) scale(0.99); }
    100% { transform: translateY(0) scale(1); }
}

@keyframes tile-shift {
    0%   { transform: translate(var(--shift-dx, 0), var(--shift-dy, 0)); }
    70%  { transform: translate(calc(var(--shift-dx, 0) * -0.06), calc(var(--shift-dy, 0) * -0.06)); }
    100% { transform: translate(0, 0); }
}

.tile-landing  { animation: tile-land  0.38s cubic-bezier(0.34, 1.56, 0.64, 1) both; }
.tile-shifting { animation: tile-shift 0.28s cubic-bezier(0.34, 1.56, 0.64, 1) both; }

/* ──────────────────────────────────────────────────────────────
   AUTH PAGES (Login, Register, AuthComplete)
   ────────────────────────────────────────────────────────────── */
.auth-page {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: calc(100vh - 120px);
    padding: 4rem 1rem 2rem;
}

.auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.auth-card-compact {
    max-width: 340px;
    text-align: center;
    padding: 2rem;
}

.auth-title {
    font-size: 1.625rem;
    font-weight: 900;
    color: var(--color-text);
    margin: 0 0 0.4rem;
    letter-spacing: -0.02em;
}

.auth-subtitle {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin: 0 0 1.75rem;
}

.auth-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #FCA5A5;
    border-radius: 8px;
    padding: 0.65rem 0.9rem;
    font-size: 0.8125rem;
    margin-bottom: 1.25rem;
}

.auth-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin-bottom: 1.1rem;
}

    .auth-field label {
        font-size: 0.8125rem;
        font-weight: 600;
        color: var(--color-muted);
        display: flex;
        justify-content: space-between;
        align-items: baseline;
    }

.auth-field-hint {
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--color-border);
}

.auth-input {
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-size: 0.9375rem;
    padding: 0.6rem 0.85rem;
    width: 100%;
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    font-family: inherit;
}

    .auth-input::placeholder {
        color: var(--color-border);
    }

    .auth-input:focus {
        border-color: var(--color-violet);
        box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.18);
    }

.auth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.7rem 1rem;
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: opacity 0.15s, transform 0.1s;
    box-sizing: border-box;
    margin-bottom: 0.75rem;
}

    .auth-btn:hover {
        opacity: 0.88;
        transform: translateY(-1px);
    }

    .auth-btn:active {
        transform: translateY(0);
    }

    .auth-btn:disabled,
    .auth-btn[disabled] {
        opacity: 0.4;
        cursor: not-allowed;
        pointer-events: none;
    }

.auth-btn-primary {
    background: var(--color-violet);
    color: #fff;
}

.auth-btn-google {
    background: var(--color-panel);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    font-weight: 600;
}

    .auth-btn-google:hover {
        border-color: var(--color-violet);
    }

.google-icon {
    flex-shrink: 0;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 1.25rem 0;
    color: var(--color-border);
    font-size: 0.8125rem;
}

    .auth-divider::before,
    .auth-divider::after {
        content: '';
        flex: 1;
        height: 1px;
        background: var(--color-border);
    }

.auth-switch {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin: 0.5rem 0 0;
}

    .auth-switch a {
        color: var(--color-violet-lt);
        text-decoration: none;
        font-weight: 600;
    }

    .auth-switch a:hover {
        text-decoration: underline;
    }

.auth-anon-note {
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-border);
    margin: 0.75rem 0 0;
}

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-violet);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}
