/* ---------------------------------------------------------------------------
   Boggle

   The markup is driven by boggle.js, which looks elements up by id, so ids and
   structure are load-bearing. Everything here is presentation only.
   --------------------------------------------------------------------------- */

:root {
    --cream: #f2ecbf;
    --surface: #fffdf6;
    --accent: #faa964;
    --accent-dark: #e08340;
    --ink: #2f2a1f;
    --muted: #7d7563;
    --line: #e0d9ae;
    --shadow: 0 2px 0 rgba(0, 0, 0, .12);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--cream);
    color: var(--ink);
    text-align: center;
    margin: 0;
    padding: 1.5rem 1rem 3rem;
    font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto,
                 Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

h1, h2 {
    font-family: inherit;
    letter-spacing: .02em;
}

h1 {
    font-size: clamp(1.5rem, 4vw, 2.1rem);
    margin: .4em 0;
}

h2 {
    font-size: clamp(1rem, 3vw, 1.3rem);
    font-weight: 600;
    color: var(--muted);
    margin: .4em 0 1.2em;
}

#logo {
    width: min(260px, 60vw);
    height: auto;
    margin: 0 auto .5rem;
    display: block;
}

/* Screens ------------------------------------------------------------------ */

.sc {
    width: min(760px, 100%);
    margin: 0 auto;
}

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

button {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    background: var(--surface);
    border: 2px solid var(--accent);
    border-radius: 12px;
    padding: .55em 1.1em;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform .08s ease, background-color .15s ease,
                box-shadow .15s ease;
}

button:hover:not(:disabled) {
    background: #fff4e6;
}

button:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: none;
}

button:focus-visible {
    outline: 3px solid var(--accent-dark);
    outline-offset: 2px;
}

button:disabled {
    opacity: .45;
    cursor: not-allowed;
    box-shadow: none;
}

#sc_start input {
    display: block;
    width: min(320px, 100%);
    margin: .5rem auto;
    height: 3rem;
    padding: 0 .9rem;
    font-family: inherit;
    font-size: 1.1rem;
    color: var(--ink);
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: 12px;
}

#sc_start input:focus {
    outline: none;
    border-color: var(--accent);
}

#sc_start button,
#sc_lobby button {
    height: 3rem;
    min-width: 9rem;
    margin: .35rem .25rem;
    font-size: 1.05rem;
    border-radius: 14px;
}

/* Solo play ---------------------------------------------------------------- */

.solo {
    margin: 1.75rem auto 0;
    padding-top: 1.25rem;
    border-top: 1px solid var(--line);
    max-width: 420px;
}

.solo label {
    display: block;
    margin-bottom: .6rem;
    font-size: .95rem;
    color: var(--muted);
}

.solo-row {
    display: flex;
    gap: .5rem;
    justify-content: center;
    flex-wrap: wrap;
}

#sel_difficulty {
    height: 3rem;
    padding: 0 .8rem;
    font-family: inherit;
    font-size: 1rem;
    color: var(--ink);
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: 12px;
    cursor: pointer;
}

#sel_difficulty:focus {
    outline: none;
    border-color: var(--accent);
}

.rules-btn {
    position: static;
    margin-top: 1.25rem;
}

.btn-rules {
    position: static;
    background: transparent;
    border-color: transparent;
    color: var(--muted);
    box-shadow: none;
    text-decoration: underline;
}

.btn-rules:hover:not(:disabled) {
    background: transparent;
    color: var(--ink);
}

/* Status line -------------------------------------------------------------- */

#sc_game {
    font-size: 1rem;
    color: var(--muted);
}

#lbl_time {
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    color: var(--ink);
}

/* The word currently being traced ------------------------------------------ */

#current_word {
    min-height: 2.4rem;
    margin: .9rem auto .2rem;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--accent-dark);
}

#current_word:empty::before {
    content: "\00a0";
}

/* Board -------------------------------------------------------------------- */

#tbl_game {
    margin: .4rem auto 1rem;
    border-spacing: .5rem;
}

#tbl_game button {
    width: clamp(56px, 17vw, 84px);
    height: clamp(56px, 17vw, 84px);
    padding: 0;
    font-size: clamp(1.5rem, 6vw, 2.4rem);
    font-weight: 700;
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: 16px;
}

#tbl_game button:hover:not(:disabled) {
    border-color: var(--accent);
    background: #fff4e6;
}

/* renderSelected() toggles this class as letters are chained. */
#tbl_game button.selected {
    background: var(--accent);
    border-color: var(--accent-dark);
    color: #fff;
    transform: translateY(1px);
    box-shadow: none;
}

/* Tables ------------------------------------------------------------------- */

table.in_line {
    background: var(--surface);
    display: inline-block;
    margin: .5rem .75rem;
    vertical-align: top;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    min-width: 8.5rem;
}

table.in_line td {
    border: 1px solid var(--line);
    padding: .4rem .8rem;
    font-size: .95rem;
}

table.in_line thead td {
    background: var(--accent);
    color: #fff;
    font-weight: 700;
}

#gamelog {
    margin: 0 auto 1rem;
}

#tbl_gamelog {
    background: var(--surface);
    margin: 0 auto;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

#tbl_gamelog td {
    border: 1px solid var(--line);
    padding: .35rem .7rem;
    font-size: .9rem;
}

/* On wide screens the leaderboard sits out of the way; on narrow ones it
   stays in the flow so it cannot cover the board. */
@media (min-width: 1100px) {
    #gamelog {
        position: absolute;
        top: 24px;
        left: 24px;
        margin: 0;
    }
}