/* ─────────────────────────────────────────────────────────────────
   FITNESS CHALLENGE — FRONTEND STYLESHEET
   Zerve Design System: dark theme
───────────────────────────────────────────────────────────────── */
:root {
    --fc-bg:          #1D1D20;
    --fc-bg-2:        #26262a;
    --fc-bg-3:        #2e2e34;
    --fc-text:        #fbfbff;
    --fc-text-2:      #909094;
    --fc-border:      #3a3a42;
    --fc-blue:        #A1C9F4;
    --fc-orange:      #FFB482;
    --fc-green:       #8DE5A1;
    --fc-coral:       #FF9F9B;
    --fc-lavender:    #D0BBFF;
    --fc-yellow:      #ffd400;
    --fc-success:     #17b26a;
    --fc-danger:      #f04438;
    --fc-radius:      10px;
    --fc-shadow:      0 4px 20px rgba(0,0,0,0.4);
}

/* ── Base ── */
.fc-dashboard, .fc-leaderboard, .fc-achievements, .fc-challenges-list,
.fc-form-wrap, .fc-leaderboard-preview {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--fc-text);
    background: var(--fc-bg);
    border-radius: var(--fc-radius);
    padding: 24px;
    box-shadow: var(--fc-shadow);
}

/* ── Stats Grid ── */
.fc-stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); gap: 16px; margin: 20px 0; }
.fc-stat-card { background: var(--fc-bg-2); border: 1px solid var(--fc-border); border-radius: var(--fc-radius); padding: 16px; text-align: center; transition: transform .2s; }
.fc-stat-card:hover { transform: translateY(-2px); }
.fc-stat-icon { font-size: 24px; display: block; margin-bottom: 8px; }
.fc-stat-val { font-size: 24px; font-weight: 700; color: var(--fc-blue); display: block; }
.fc-stat-label { font-size: 12px; color: var(--fc-text-2); display: block; margin-top: 4px; }
.fc-stat-card.fc-positive .fc-stat-val { color: var(--fc-green); }

/* ── Dashboard Header ── */
.fc-dashboard-header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.fc-dashboard-hero h2 { margin: 0; font-size: 22px; }
.fc-challenge-name { color: var(--fc-text-2); margin: 4px 0 0; }

/* ── Submission Status ── */
.fc-submission-status { padding: 14px 20px; border-radius: var(--fc-radius); margin: 16px 0; display: flex; justify-content: space-between; align-items: center; font-weight: 600; }
.fc-status-submitted  { background: rgba(23,178,106,0.15); border: 1px solid var(--fc-success); }
.fc-status-pending    { background: rgba(255,212,0,0.1); border: 1px solid var(--fc-yellow); }
.fc-status-late       { background: rgba(240,68,56,0.1); border: 1px solid var(--fc-danger); }
.fc-status-no_window  { background: var(--fc-bg-2); border: 1px solid var(--fc-border); }
.fc-status-no_baseline{ background: rgba(161,201,244,0.1); border: 1px solid var(--fc-blue); }

/* ── Tabs ── */
.fc-tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--fc-border); margin: 20px 0 0; }
.fc-tab-btn { background: none; border: none; color: var(--fc-text-2); padding: 10px 20px; cursor: pointer; font-size: 14px; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color .2s; }
.fc-tab-btn:hover { color: var(--fc-text); }
.fc-tab-btn.active { color: var(--fc-blue); border-bottom-color: var(--fc-blue); font-weight: 600; }
.fc-tab-content { padding: 20px 0; }

/* ── Tables ── */
.fc-history-table, .fc-lb-table, .fc-points-table {
    width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 14px;
}
.fc-history-table th, .fc-lb-table th, .fc-points-table th {
    background: var(--fc-bg-3); color: var(--fc-text-2); padding: 10px 12px; text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .5px;
}
.fc-history-table td, .fc-lb-table td, .fc-points-table td {
    padding: 10px 12px; border-bottom: 1px solid var(--fc-border); vertical-align: middle;
}
.fc-lb-row.fc-lb-me td { background: rgba(161,201,244,0.05); font-weight: 600; }
.fc-lb-row:hover td { background: var(--fc-bg-2); }

/* ── Badges ── */
.fc-badge { display: inline-block; padding: 3px 8px; border-radius: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.fc-badge-approved, .fc-badge-on-time { background: rgba(23,178,106,0.2); color: var(--fc-success); }
.fc-badge-pending  { background: rgba(255,212,0,0.15); color: var(--fc-yellow); }
.fc-badge-rejected { background: rgba(240,68,56,0.15); color: var(--fc-danger); }
.fc-badge-late     { background: rgba(240,68,56,0.15); color: var(--fc-coral); }
.fc-badge-none     { background: var(--fc-bg-3); color: var(--fc-text-2); }

/* ── Buttons ── */
.fc-btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 22px; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; text-decoration: none; transition: opacity .15s, transform .1s; }
.fc-btn:hover { opacity: .85; transform: translateY(-1px); }
.fc-btn-primary { background: var(--fc-blue); color: #1D1D20; }
.fc-btn-secondary { background: var(--fc-bg-2); color: var(--fc-text); border: 1px solid var(--fc-border); }
.fc-btn-block { width: 100%; }

/* ── Forms ── */
.fc-form-wrap { max-width: 500px; margin: 0 auto; }
.fc-form-wrap h2 { margin-top: 0; color: var(--fc-text); }
.fc-field { margin-bottom: 16px; }
.fc-field label { display: block; font-size: 13px; color: var(--fc-text-2); margin-bottom: 6px; font-weight: 600; }
.fc-field input, .fc-field select, .fc-field textarea {
    width: 100%; background: var(--fc-bg-2); border: 1px solid var(--fc-border); color: var(--fc-text);
    padding: 10px 14px; border-radius: 8px; font-size: 14px; box-sizing: border-box; outline: none; transition: border-color .2s;
}
.fc-field input:focus, .fc-field select:focus { border-color: var(--fc-blue); }
.fc-checkbox-field label { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--fc-text); font-weight: normal; cursor: pointer; }
.fc-checkbox-field input[type=checkbox] { width: auto; margin-top: 2px; }
.fc-form-msg { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; display: none; }
.fc-msg-success { display: block; background: rgba(23,178,106,0.15); color: var(--fc-success); border: 1px solid var(--fc-success); }
.fc-msg-error   { display: block; background: rgba(240,68,56,0.1); color: var(--fc-danger); border: 1px solid var(--fc-danger); }
.fc-form-alt    { text-align: center; font-size: 13px; color: var(--fc-text-2); margin-top: 16px; }
.fc-form-alt a  { color: var(--fc-blue); text-decoration: none; }
.fc-forgot { text-align: right; margin: -8px 0 12px; font-size: 13px; }
.fc-forgot a { color: var(--fc-text-2); text-decoration: none; }

/* ── Leaderboard ── */
.fc-lb-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.fc-lb-filter, .fc-lb-gender { background: var(--fc-bg-2); color: var(--fc-text-2); border: 1px solid var(--fc-border); padding: 6px 14px; border-radius: 20px; cursor: pointer; font-size: 13px; transition: all .2s; }
.fc-lb-filter.active { background: var(--fc-blue); color: #1D1D20; border-color: var(--fc-blue); font-weight: 700; }
.fc-lb-gender.active { background: var(--fc-lavender); color: #1D1D20; border-color: var(--fc-lavender); font-weight: 700; }
.fc-you-badge { background: var(--fc-yellow); color: #1D1D20; font-size: 10px; padding: 2px 7px; border-radius: 10px; font-weight: 700; margin-left: 6px; }
.fc-positive { color: var(--fc-green); }
.fc-negative { color: var(--fc-coral); }

/* ── Achievements ── */
.fc-points-total { text-align: center; padding: 20px; margin-bottom: 20px; }
.fc-points-big { display: block; font-size: 56px; font-weight: 800; color: var(--fc-yellow); line-height: 1; }
.fc-badges-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px,1fr)); gap: 14px; margin-bottom: 24px; }
.fc-badge-card { background: var(--fc-bg-2); border: 1px solid var(--fc-border); border-radius: var(--fc-radius); padding: 16px; text-align: center; transition: transform .2s; }
.fc-badge-card.fc-badge-earned { border-color: var(--fc-yellow); background: rgba(255,212,0,0.05); }
.fc-badge-card.fc-badge-locked { opacity: .5; filter: grayscale(1); }
.fc-badge-icon { font-size: 32px; display: block; margin-bottom: 8px; }
.fc-badge-name { font-size: 13px; font-weight: 700; display: block; }
.fc-badge-desc { font-size: 11px; color: var(--fc-text-2); display: block; margin-top: 4px; }
.fc-badge-date { font-size: 10px; color: var(--fc-text-2); display: block; margin-top: 6px; }

/* ── Challenges List ── */
.fc-challenge-card { background: var(--fc-bg-2); border: 1px solid var(--fc-border); border-radius: var(--fc-radius); padding: 20px; margin-bottom: 16px; position: relative; transition: transform .2s; }
.fc-challenge-card:hover { transform: translateY(-2px); }
.fc-challenge-status-badge { position: absolute; top: 16px; right: 16px; font-size: 11px; font-weight: 700; text-transform: uppercase; padding: 3px 10px; border-radius: 20px; }
.fc-challenge-active   .fc-challenge-status-badge { background: rgba(23,178,106,0.2); color: var(--fc-success); }
.fc-challenge-upcoming .fc-challenge-status-badge { background: rgba(161,201,244,0.15); color: var(--fc-blue); }
.fc-challenge-meta { display: flex; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--fc-text-2); margin: 12px 0; }
.fc-challenge-actions { margin-top: 16px; }

/* ── Admin Stats ── */
.fc-admin-stats { display: flex; gap: 16px; flex-wrap: wrap; margin: 20px 0; }
.fc-admin-stats .fc-stat-card { background: #fff; border: 1px solid #ddd; color: #1D1D20; min-width: 140px; }
.fc-admin-stats .fc-stat-num  { font-size: 32px; font-weight: 800; color: #0073aa; display: block; }
.fc-stat-alert .fc-stat-num   { color: #d63638; }
.fc-status-active   { color: #00a32a; font-weight: 700; }
.fc-status-upcoming { color: #0073aa; }
.fc-status-completed{ color: #888; }
.fc-admin-form-box  { background: #fff; border: 1px solid #ddd; padding: 20px; border-radius: 6px; margin-bottom: 24px; }

/* ── Responsive ── */
@media (max-width: 600px) {
    .fc-stats-grid { grid-template-columns: repeat(2,1fr); }
    .fc-badges-grid { grid-template-columns: repeat(2,1fr); }
    .fc-tabs { flex-wrap: wrap; }
    .fc-tab-btn { font-size: 12px; padding: 8px 12px; }
    .fc-dashboard, .fc-leaderboard, .fc-achievements { padding: 16px; }
}
#fc-toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 999999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 360px;
    pointer-events: none;
}
#fc-toast-container > div {
    pointer-events: auto;
    word-break: break-word;
}