:root {
    --bg: #0f1419;
    --bg-elev: #1a2129;
    --bg-soft: #232c36;
    --fg: #e6e8eb;
    --fg-dim: #8a96a4;
    --accent: #4aa3ff;
    --accent-soft: #1e3a5f;
    --warn: #f0a040;
    --err: #e05050;
    --ok: #5ec25e;
    --border: #2a3540;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header.topbar {
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
header.topbar .brand { font-weight: 600; color: var(--fg); }
header.topbar nav { display: flex; align-items: center; gap: 0.5rem; }
header.topbar nav a { margin-left: 1rem; color: var(--fg-dim); }
header.topbar nav a:hover { color: var(--fg); text-decoration: none; }
.lang-switch { display: inline-flex; gap: 0.25rem; margin-left: 0.5rem; padding-left: 0.75rem; border-left: 1px solid var(--border); }
.lang-switch form { display: inline; }
.lang-switch button[disabled] { opacity: 1; cursor: default; background: var(--accent-soft); color: var(--accent); }

main { max-width: 900px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

h1, h2, h3 { color: var(--fg); margin-top: 1.5rem; }
h1 { font-size: 1.6rem; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
h2 { font-size: 1.25rem; }

.flash {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border: 1px solid;
}
.flash.error   { background: rgba(224,80,80,0.12);  border-color: var(--err);  color: var(--err); }
.flash.success { background: rgba(94,194,94,0.12);  border-color: var(--ok);   color: var(--ok); }
.flash.info    { background: rgba(74,163,255,0.12); border-color: var(--accent); color: var(--accent); }

form.card, .card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

label { display: block; margin-bottom: 0.25rem; color: var(--fg-dim); font-size: 0.9rem; }
input[type=text], input[type=password], input[type=email], textarea, select {
    width: 100%;
    background: var(--bg-soft);
    color: var(--fg);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.5rem 0.6rem;
    font-size: 1rem;
    margin-bottom: 0.75rem;
    font-family: inherit;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }

button, .btn {
    background: var(--accent);
    color: #0a1422;
    border: 0;
    border-radius: 4px;
    padding: 0.55rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}
button:hover, .btn:hover { filter: brightness(1.1); text-decoration: none; }
.btn.secondary { background: var(--bg-soft); color: var(--fg); border: 1px solid var(--border); }
.btn.danger    { background: var(--err); color: #fff; }
.btn.small     { padding: 0.3rem 0.6rem; font-size: 0.85rem; }

table { width: 100%; border-collapse: collapse; background: var(--bg-elev); border-radius: 6px; overflow: hidden; }
th, td { padding: 0.6rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--bg-soft); color: var(--fg-dim); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px; }
tr:last-child td { border-bottom: 0; }

.muted { color: var(--fg-dim); }
.row { display: flex; gap: 0.75rem; align-items: center; }
.row.between { justify-content: space-between; }
.pill { display: inline-block; padding: 0.15rem 0.55rem; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 0.8rem; }
.pill.admin { background: rgba(240,160,64,0.15); color: var(--warn); }
.invite-link { background: var(--bg-soft); padding: 0.5rem; border-radius: 4px; font-family: monospace; word-break: break-all; }

/* Progress bars (goal completion) */
.progress {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 999px;
    height: 0.9rem;
    overflow: hidden;
    position: relative;
}
.progress > span {
    display: block;
    height: 100%;
    background: var(--accent);
    border-radius: 999px 0 0 999px;
    transition: width 0.3s;
}
.progress.full > span { background: var(--ok); border-radius: 999px; }
.progress.big { height: 1.4rem; }
.progress-label { font-size: 0.85rem; color: var(--fg-dim); }
.inv-status { font-size: 0.9rem; }

/* Version tag, bottom-right, discreet and non-intrusive. */
.version {
    position: fixed;
    right: 0.5rem;
    bottom: 0.35rem;
    font-size: 0.7rem;
    color: var(--fg-dim);
    opacity: 0.5;
    pointer-events: none;
    user-select: none;
}

.goal-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.75rem; }
.goal-tile { display: block; margin-bottom: 0; }
.goal-tile:hover { border-color: var(--accent); text-decoration: none; }
.goal-tile strong { color: var(--fg); }

.override-banner {
    background: var(--warn);
    color: #2a1a06;
    padding: 0.6rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-weight: 600;
}
.override-banner .btn { background: #2a1a06; color: var(--warn); }

input[type=file] {
    color: var(--fg-dim);
    font-size: 0.9rem;
    max-width: 100%;
}
input[type=checkbox] { accent-color: var(--accent); }

@media (max-width: 600px) {
    main { padding: 1rem 0.75rem 3rem; }
    header.topbar { padding: 0.6rem 0.75rem; flex-wrap: wrap; gap: 0.4rem; }
    /* Wide tables scroll horizontally instead of overflowing the page. */
    table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .goal-tiles { grid-template-columns: 1fr; }
}