/**
 * Chess Trainer Pro — Frontend Styles
 * Plugin : chess2400.com
 * ────────────────────────────────────
 */

/* ══════════════════════════════════════
   0.  Variables & Reset
   ══════════════════════════════════════ */
:root {
    --ctp-primary:      #1b5e20;
    --ctp-primary-lt:   #388e3c;
    --ctp-accent:       #f9a825;
    --ctp-accent-lt:    #fdd835;
    --ctp-dark:         #1a1a2e;
    --ctp-dark-mid:     #16213e;
    --ctp-surface:      #ffffff;
    --ctp-surface-alt:  #f5f5f5;
    --ctp-text:         #212121;
    --ctp-text-sec:     #616161;
    --ctp-border:       #e0e0e0;
    --ctp-success:      #2e7d32;
    --ctp-success-bg:   #e8f5e9;
    --ctp-error:        #c62828;
    --ctp-error-bg:     #ffebee;
    --ctp-info-bg:      #e3f2fd;
    --ctp-gold:         #ffd600;
    --ctp-silver:       #b0bec5;
    --ctp-bronze:       #8d6e63;
    --ctp-radius:       10px;
    --ctp-shadow:       0 2px 12px rgba(0,0,0,.08);
    --ctp-shadow-lg:    0 8px 30px rgba(0,0,0,.12);
    --ctp-font:         'Segoe UI', system-ui, -apple-system, sans-serif;
    --ctp-mono:         'Cascadia Code', 'Fira Code', monospace;
    --ctp-transition:   .25s cubic-bezier(.4,0,.2,1);
}

/* CRITICAL: Fix drag & drop — WordPress themes break chessboard.js */
.board-b72b1 img {
    max-width: none !important;
    max-height: none !important;
}
.board-b72b1 .piece-417db {
    cursor: grab !important;
    pointer-events: auto !important;
}
.board-b72b1 .piece-417db:active {
    cursor: grabbing !important;
}
img.piece-417db {
    position: absolute !important;
    z-index: 9999 !important;
}
/* Fix touch events on mobile */
.board-b72b1 {
    touch-action: none;
}

[class^="ctp-"] { box-sizing: border-box; }

/* ══════════════════════════════════════
   1.  Login Notice
   ══════════════════════════════════════ */
.ctp-login-notice {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--ctp-surface);
    border: 2px dashed var(--ctp-border);
    border-radius: var(--ctp-radius);
    max-width: 500px;
    margin: 2rem auto;
}
.ctp-login-icon {
    font-size: 3rem;
    margin-bottom: .5rem;
}
.ctp-login-notice h3 {
    margin: .5rem 0;
    color: var(--ctp-dark);
}
.ctp-login-notice p {
    color: var(--ctp-text-sec);
    margin-bottom: 1.5rem;
}

/* ══════════════════════════════════════
   2.  Buttons
   ══════════════════════════════════════ */
.ctp-btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .6rem 1.2rem;
    border: none;
    border-radius: 6px;
    font-family: var(--ctp-font);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--ctp-transition);
    white-space: nowrap;
}
.ctp-btn:hover { transform: translateY(-1px); }
.ctp-btn:active { transform: translateY(0); }

.ctp-btn-primary {
    background: var(--ctp-primary);
    color: #fff;
}
.ctp-btn-primary:hover { background: var(--ctp-primary-lt); }

.ctp-btn-hint {
    background: var(--ctp-info-bg);
    color: #1565c0;
}
.ctp-btn-hint:hover { background: #bbdefb; }

.ctp-btn-solution {
    background: var(--ctp-surface-alt);
    color: var(--ctp-text-sec);
}
.ctp-btn-solution:hover { background: var(--ctp-border); }

.ctp-btn-next {
    background: var(--ctp-primary);
    color: #fff;
}
.ctp-btn-next:hover { background: var(--ctp-primary-lt); }

.ctp-btn-retry {
    background: var(--ctp-accent);
    color: var(--ctp-dark);
}
.ctp-btn-retry:hover { background: var(--ctp-accent-lt); }

/* ══════════════════════════════════════
   3.  Trainer — Header Stats
   ══════════════════════════════════════ */
.ctp-trainer {
    max-width: 520px;
    margin: 2rem auto;
    font-family: var(--ctp-font);
    color: var(--ctp-text);
}

.ctp-header {
    display: flex;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--ctp-dark), var(--ctp-dark-mid));
    border-radius: var(--ctp-radius);
    padding: 1rem 1.2rem;
    margin-bottom: 1rem;
    box-shadow: var(--ctp-shadow);
}
.ctp-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .15rem;
}
.ctp-stat-icon { font-size: 1.2rem; }
.ctp-stat-label {
    font-size: .65rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: rgba(255,255,255,.55);
}
.ctp-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    font-family: var(--ctp-mono);
}

/* ══════════════════════════════════════
   4.  XP Bar
   ══════════════════════════════════════ */
.ctp-xp-bar-container {
    position: relative;
    height: 22px;
    background: var(--ctp-surface-alt);
    border-radius: 11px;
    overflow: hidden;
    margin-bottom: 1rem;
    border: 1px solid var(--ctp-border);
}
.ctp-xp-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--ctp-primary), var(--ctp-accent));
    border-radius: 11px;
    transition: width .6s ease;
}
.ctp-xp-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    font-weight: 600;
    color: var(--ctp-text);
    pointer-events: none;
}

/* ══════════════════════════════════════
   5.  Puzzle Info Row
   ══════════════════════════════════════ */
.ctp-puzzle-info {
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: .5rem 0;
    margin-bottom: .5rem;
    font-size: .82rem;
    color: var(--ctp-text-sec);
}
.ctp-puzzle-rating {
    font-weight: 700;
    color: var(--ctp-primary);
    font-family: var(--ctp-mono);
}
.ctp-puzzle-themes {
    background: var(--ctp-surface-alt);
    padding: .2rem .6rem;
    border-radius: 4px;
    font-size: .75rem;
}
.ctp-timer {
    margin-left: auto;
    font-family: var(--ctp-mono);
    font-weight: 700;
    font-size: .95rem;
    color: var(--ctp-dark);
}

/* ══════════════════════════════════════
   6.  Board
   ══════════════════════════════════════ */
.ctp-board-wrapper {
    position: relative;
    margin-bottom: 1rem;
}
.ctp-board-wrapper .board-b72b1 {
    border-radius: var(--ctp-radius);
    overflow: hidden;
    box-shadow: var(--ctp-shadow-lg);
}
.ctp-turn-indicator {
    text-align: center;
    padding: .45rem;
    font-weight: 600;
    font-size: .85rem;
    border-radius: 6px 6px 0 0;
    background: var(--ctp-primary);
    color: #fff;
    transition: background var(--ctp-transition);
}
.ctp-turn-indicator.opponent { background: var(--ctp-text-sec); }
.ctp-turn-indicator.correct  { background: var(--ctp-success); }
.ctp-turn-indicator.wrong    { background: var(--ctp-error); }

/* Highlight squares */
.ctp-highlight-move {
    box-shadow: inset 0 0 0 3px var(--ctp-accent) !important;
}
.ctp-highlight-correct {
    box-shadow: inset 0 0 0 3px var(--ctp-success) !important;
}
.ctp-highlight-wrong {
    box-shadow: inset 0 0 0 3px var(--ctp-error) !important;
}

/* ══════════════════════════════════════
   7.  Controls
   ══════════════════════════════════════ */
.ctp-controls {
    display: flex;
    gap: .6rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

/* ══════════════════════════════════════
   8.  Feedback
   ══════════════════════════════════════ */
.ctp-feedback {
    display: flex;
    align-items: flex-start;
    gap: .8rem;
    padding: 1rem;
    border-radius: var(--ctp-radius);
    margin-bottom: 1rem;
    animation: ctpSlideIn .3s ease;
}
.ctp-feedback.correct {
    background: var(--ctp-success-bg);
    border-left: 4px solid var(--ctp-success);
}
.ctp-feedback.wrong {
    background: var(--ctp-error-bg);
    border-left: 4px solid var(--ctp-error);
}
.ctp-feedback-icon { font-size: 1.6rem; flex-shrink: 0; }
.ctp-feedback-text { font-weight: 600; font-size: .95rem; }
.ctp-feedback-details {
    font-size: .82rem;
    color: var(--ctp-text-sec);
    margin-top: .3rem;
}

.ctp-explanation {
    background: var(--ctp-info-bg);
    border-left: 4px solid #1565c0;
    padding: 1rem;
    border-radius: 0 var(--ctp-radius) var(--ctp-radius) 0;
    margin-bottom: 1rem;
    font-size: .88rem;
    line-height: 1.6;
}

/* ══════════════════════════════════════
   9.  Badge Popup
   ══════════════════════════════════════ */
.ctp-badge-popup {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%) scale(.7);
    background: var(--ctp-surface);
    border-radius: 16px;
    padding: 2rem 2.5rem;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: all .4s cubic-bezier(.34,1.56,.64,1);
}
.ctp-badge-popup.show {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, -50%) scale(1);
}
.ctp-badge-popup .ctp-badge-icon { font-size: 3rem; margin-bottom: .5rem; }
.ctp-badge-popup .ctp-badge-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ctp-dark);
    margin-bottom: .3rem;
}
.ctp-badge-popup .ctp-badge-desc {
    font-size: .85rem;
    color: var(--ctp-text-sec);
}
.ctp-badge-popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 9999;
    backdrop-filter: blur(3px);
}

/* ══════════════════════════════════════
   10. Theme Filter
   ══════════════════════════════════════ */
.ctp-theme-filter {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .85rem;
    color: var(--ctp-text-sec);
}
.ctp-theme-filter select {
    padding: .35rem .6rem;
    border: 1px solid var(--ctp-border);
    border-radius: 6px;
    font-family: var(--ctp-font);
    font-size: .82rem;
    background: var(--ctp-surface);
}

/* ══════════════════════════════════════
   11. Rankings
   ══════════════════════════════════════ */
.ctp-rankings {
    max-width: 680px;
    margin: 2rem auto;
    font-family: var(--ctp-font);
}
.ctp-rankings-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.2rem;
    border-bottom: 2px solid var(--ctp-border);
}
.ctp-tab {
    padding: .7rem 1.4rem;
    border: none;
    background: none;
    font-family: var(--ctp-font);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--ctp-text-sec);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all var(--ctp-transition);
}
.ctp-tab:hover { color: var(--ctp-primary); }
.ctp-tab.active {
    color: var(--ctp-primary);
    border-bottom-color: var(--ctp-primary);
}

.ctp-ranking-row {
    display: flex;
    align-items: center;
    padding: .75rem 1rem;
    background: var(--ctp-surface);
    border-radius: 8px;
    margin-bottom: .5rem;
    box-shadow: var(--ctp-shadow);
    transition: transform var(--ctp-transition);
}
.ctp-ranking-row:hover { transform: translateX(4px); }

.ctp-rank-position {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 800;
    font-size: .85rem;
    flex-shrink: 0;
    margin-right: 1rem;
    background: var(--ctp-surface-alt);
    color: var(--ctp-text-sec);
}
.ctp-rank-position.gold   { background: var(--ctp-gold); color: #3e2723; }
.ctp-rank-position.silver { background: var(--ctp-silver); color: #fff; }
.ctp-rank-position.bronze { background: var(--ctp-bronze); color: #fff; }

.ctp-rank-name {
    flex: 1;
    font-weight: 600;
    color: var(--ctp-dark);
}
.ctp-rank-elo {
    font-family: var(--ctp-mono);
    font-weight: 700;
    color: var(--ctp-primary);
    margin-right: 1.5rem;
}
.ctp-rank-points {
    font-family: var(--ctp-mono);
    font-size: .85rem;
    color: var(--ctp-accent);
    font-weight: 600;
}

.ctp-ranking-row.is-me {
    background: linear-gradient(90deg, var(--ctp-success-bg), var(--ctp-surface));
    border-left: 4px solid var(--ctp-primary);
}

/* ══════════════════════════════════════
   12. Profile
   ══════════════════════════════════════ */
.ctp-profile {
    max-width: 680px;
    margin: 2rem auto;
    font-family: var(--ctp-font);
}
.ctp-profile-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--ctp-dark), var(--ctp-dark-mid));
    border-radius: var(--ctp-radius);
    color: #fff;
    margin-bottom: 1.5rem;
    box-shadow: var(--ctp-shadow-lg);
}
.ctp-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(255,255,255,.15);
    overflow: hidden;
    flex-shrink: 0;
}
.ctp-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.ctp-profile-info h2 {
    margin: 0;
    font-size: 1.3rem;
}
.ctp-profile-level {
    font-size: .8rem;
    color: var(--ctp-accent);
    font-weight: 600;
    margin-top: .2rem;
}
.ctp-profile-elo {
    margin-left: auto;
    text-align: center;
}
.ctp-elo-big {
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--ctp-mono);
    color: var(--ctp-accent);
}
.ctp-elo-label {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: rgba(255,255,255,.6);
}
.ctp-elo-peak {
    font-size: .75rem;
    color: rgba(255,255,255,.45);
    margin-top: .2rem;
}

/* Profile Stats Grid */
.ctp-profile-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: .8rem;
    margin-bottom: 1.5rem;
}
.ctp-pstat {
    background: var(--ctp-surface);
    padding: 1rem;
    border-radius: var(--ctp-radius);
    text-align: center;
    box-shadow: var(--ctp-shadow);
}
.ctp-pstat-value {
    font-size: 1.4rem;
    font-weight: 800;
    font-family: var(--ctp-mono);
    color: var(--ctp-primary);
}
.ctp-pstat-label {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--ctp-text-sec);
    margin-top: .3rem;
}

/* Badges Grid */
.ctp-profile-badges { margin-bottom: 1.5rem; }
.ctp-profile-badges h3,
.ctp-profile-history h3 {
    font-size: 1rem;
    margin-bottom: .8rem;
    color: var(--ctp-dark);
}
.ctp-badges-grid {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem;
}
.ctp-badge-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: .8rem;
    width: 90px;
    background: var(--ctp-surface);
    border-radius: var(--ctp-radius);
    box-shadow: var(--ctp-shadow);
    text-align: center;
    transition: transform var(--ctp-transition);
}
.ctp-badge-card:hover { transform: translateY(-3px); }
.ctp-badge-card .icon { font-size: 1.6rem; margin-bottom: .3rem; }
.ctp-badge-card .name {
    font-size: .68rem;
    font-weight: 600;
    color: var(--ctp-dark);
    line-height: 1.3;
}

/* History List */
.ctp-history-item {
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: .6rem .8rem;
    border-bottom: 1px solid var(--ctp-border);
    font-size: .84rem;
}
.ctp-history-item:last-child { border-bottom: none; }
.ctp-history-result {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .8rem;
    flex-shrink: 0;
}
.ctp-history-result.ok  { background: var(--ctp-success-bg); color: var(--ctp-success); }
.ctp-history-result.ko  { background: var(--ctp-error-bg); color: var(--ctp-error); }
.ctp-history-elo {
    margin-left: auto;
    font-family: var(--ctp-mono);
    font-weight: 600;
    font-size: .8rem;
}
.ctp-history-elo.up   { color: var(--ctp-success); }
.ctp-history-elo.down { color: var(--ctp-error); }

/* ══════════════════════════════════════
   13. Single Puzzle
   ══════════════════════════════════════ */
.ctp-single-puzzle {
    max-width: 440px;
    margin: 2rem auto;
}

/* ══════════════════════════════════════
   14. Loading
   ══════════════════════════════════════ */
.ctp-loading {
    text-align: center;
    padding: 2rem;
    color: var(--ctp-text-sec);
    font-style: italic;
}
.ctp-loading::before {
    content: '';
    display: block;
    width: 28px;
    height: 28px;
    border: 3px solid var(--ctp-border);
    border-top-color: var(--ctp-primary);
    border-radius: 50%;
    margin: 0 auto .8rem;
    animation: ctpSpin .8s linear infinite;
}

.ctp-error {
    color: var(--ctp-error);
    font-weight: 600;
    padding: 1rem;
    text-align: center;
}

/* ══════════════════════════════════════
   15. Animations
   ══════════════════════════════════════ */
@keyframes ctpSlideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes ctpSpin {
    to { transform: rotate(360deg); }
}
@keyframes ctpPulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.08); }
}
.ctp-pulse { animation: ctpPulse .5s ease; }

/* ══════════════════════════════════════
   16. Responsive
   ══════════════════════════════════════ */
@media (max-width: 600px) {
    .ctp-trainer { max-width: 100%; padding: 0 8px; }
    .ctp-board-wrapper { overflow: hidden; }
    #ctp-board { width: 100% !important; max-width: 100% !important; }
    .ctp-header { padding: .7rem; gap: .2rem; }
    .ctp-stat-value { font-size: 1rem; }
    .ctp-stat-label { font-size: .58rem; }

    .ctp-profile-header { flex-direction: column; text-align: center; }
    .ctp-profile-elo { margin-left: 0; margin-top: .5rem; }
    .ctp-profile-stats { grid-template-columns: repeat(2, 1fr); }

    .ctp-controls { justify-content: center; }
}