/* ========================================
   Shared Trainer CSS (trainers_new.css)
   Common patterns from alg_trainer2 & inspection2.
   Prefix: trn- (trainer neutral)
   ======================================== */

/* ── Container ─────────────────────────────────────────────── */
.trn-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem 1rem 2rem;
}

/* ── Header ─────────────────────────────────────────────── */
.trn-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}
.trn-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.02em;
    color: var(--text-color);
}
.trn-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.trn-header-actions .btn {
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: 8px;
}

/* ── Mode Tabs ──────────────────────────────────────────── */
.trn-mode-tabs {
    display: flex;
    gap: 0.25rem;
    background: var(--card-bg);
    border: 1px solid var(--accent-color);
    border-radius: 12px;
    padding: 0.3rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    position: relative;
}
.trn-tab-indicator {
    position: absolute;
    top: 0.3rem;
    bottom: 0.3rem;
    background: var(--accent-color);
    border-radius: 8px;
    z-index: 0;
    transition: left 220ms cubic-bezier(0.4, 0, 0.2, 1), width 220ms cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}
.trn-mode-tab {
    flex: 1;
    text-align: center;
    padding: 0.55rem 0.75rem;
    border: none;
    background: transparent;
    position: relative;
    z-index: 1;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: 180ms ease;
    white-space: nowrap;
}
.trn-mode-tab:hover {
    background: rgba(var(--accent-color-rgb), 0.06);
    color: var(--text-color);
}
.trn-mode-tab.active {
    color: #fff;
}

/* ── Main Card ──────────────────────────────────────────── */
.trn-main-card {
    background: var(--card-bg);
    border: 1px solid var(--accent-color);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
    overflow: hidden;
}
.trn-main-card-body {
    padding: 1.5rem;
}
.trn-main-card-body.trn-loading {
    visibility: hidden;
}

/* ── Layout grid ────────────────────────────────────────── */
.trn-layout-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
@media (min-width: 768px) {
    .trn-layout-grid {
        display: grid;
        grid-template-columns: 3fr 7fr;
        grid-template-rows: auto auto;
        gap: 1rem;
    }
    .trn-play-cell     { grid-column: 1; grid-row: 1; }
    .trn-select-cell   { grid-column: 1; grid-row: 2; }
    .trn-submode-cell  { grid-column: 2; grid-row: 1; }
    .trn-settings-cell { grid-column: 2; grid-row: 2; }
}

/* ── Play button ────────────────────────────────────────── */
.trn-play-btn {
    border: none;
    background: var(--accent-color);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.6rem 1.8rem;
    border-radius: 8px;
    transition: 180ms ease;
    box-shadow: 0 2px 8px rgba(var(--accent-color-rgb), 0.3);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.trn-play-btn:hover {
    background: var(--accent-color-dark);
    box-shadow: 0 4px 14px rgba(var(--accent-color-rgb), 0.45);
}
.trn-play-btn:active {
    transform: scale(0.97);
}
.trn-play-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
    pointer-events: none;
}
.trn-play-btn:disabled:hover {
    background: var(--accent-color);
    box-shadow: none;
}

/* ── Mode Settings ──────────────────────────────────────── */
.trn-mode-settings {
    background: var(--card-bg);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    padding: 1rem;
    min-height: 160px;
    height: auto;
    display: block;
}
.trn-mode-settings .trn-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
    margin-bottom: 0.35rem;
    text-align: left;
}
.trn-mode-settings .trn-sub {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-align: left;
}

/* Settings internal grid */
.trn-settings-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem 1.5rem;
}

/* ── Settings dropdown (3D mode) ────────────────────────── */
.trn-settings-select {
    font-size: 0.75rem;
    padding: 0.2rem 1.5rem 0.2rem 0.5rem;
    border: 1px solid var(--accent-color);
    border-radius: 6px;
    background-color: var(--card-bg);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23888'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.4rem center;
    color: var(--text-color);
    cursor: pointer;
    min-width: 140px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

/* ── Settings rows ──────────────────────────────────────── */
.trn-settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    margin-bottom: 0.35rem;
}
.trn-settings-row > label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 0;
    white-space: nowrap;
}
.trn-settings-row select,
.trn-settings-row input[type="number"] {
    font-size: 0.8125rem;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    border: 1px solid var(--accent-color);
    background: var(--card-bg);
    color: var(--text-color);
}
.trn-settings-row .form-check {
    display: flex;
    align-items: center;
    margin-bottom: 0;
    padding-left: 0;
}
.trn-settings-row .form-check .form-check-input {
    float: none;
    margin: 0;
    flex-shrink: 0;
}

/* ── Settings toggle/multi button grid ──────────────────── */
.trn-settings-btn-grid {
    display: flex;
    gap: 1px;
    max-width: 420px;
}
.trn-settings-btn-grid .trn-settings-btn,
.trn-settings-btn {
    padding: 0.35rem 0.6rem;
    border: 2px solid var(--accent-color);
    border-radius: 0;
    background: transparent;
    color: var(--text-color);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: 120ms ease;
    font-family: inherit;
    line-height: 1.4;
    flex: 1;
    margin-left: -1px;
}
.trn-settings-btn-grid .trn-settings-btn:first-child,
.trn-settings-btn:first-child {
    border-radius: 6px 0 0 6px;
    margin-left: 0;
}
.trn-settings-btn-grid .trn-settings-btn:last-child,
.trn-settings-btn:last-child {
    border-radius: 0 6px 6px 0;
}
.trn-settings-btn.active {
    border-color: var(--accent-color);
    color: #fff;
    background: var(--accent-color);
}
.trn-settings-btn:hover:not(:disabled) {
    border-color: rgba(var(--accent-color-rgb), 0.4);
}
.trn-settings-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* ── Sub-mode selector (button grid) ────────────────────── */
.trn-submode-grid {
    display: flex;
    margin-bottom: 0.5rem;
}
.trn-submode-grid .trn-settings-btn {
    border-radius: 0;
    margin-left: -1px;
    flex: 1;
}
.trn-submode-grid .trn-settings-btn:first-child {
    border-radius: 6px 0 0 6px;
    margin-left: 0;
}
.trn-submode-grid .trn-settings-btn:last-child {
    border-radius: 0 6px 6px 0;
}
.trn-submode-grid .trn-settings-btn:first-child:last-child {
    border-radius: 6px;
}
.trn-submode-grid .trn-settings-btn.active {
    border-color: var(--accent-color);
    background: var(--accent-color);
    color: #fff;
}

/* ── Select Cases / Length card ─────────────────────────── */
.trn-select-card {
    background: rgba(var(--accent-color-rgb), 0.08);
    border: 1px dashed var(--accent-color);
    border-radius: 8px;
    padding: 1.25rem 1rem;
    text-align: center;
    min-height: 140px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}
.trn-select-card .trn-label {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-color);
}
.trn-select-card .trn-sub {
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.trn-select-dropdown {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 2px solid var(--accent-color);
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    text-align: center;
    min-width: 120px;
    transition: 180ms ease;
}
.trn-select-dropdown:hover {
    border-color: var(--accent-color-dark);
}

/* ── Keybind button ───────────────────────────────────────── */
.trn-keybind-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    text-align: left;
    font-family: monospace;
    font-size: 0.8125rem;
    padding: 0.3rem 0.75rem;
    border: 2px solid var(--accent-color);
    background: var(--card-bg);
    color: var(--text-color);
    border-radius: 6px;
    cursor: pointer;
    transition: 140ms ease;
}
.trn-keybind-btn:hover {
    border-color: var(--accent-color-dark);
}
.trn-keybind-btn.listening {
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
}
.trn-keybind-btn-group {
    display: flex;
    gap: 0.35rem;
}

/* ── Keybinds modal ─────────────────────────────────────── */
.trn-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}
.trn-modal-content {
    background: var(--card-bg);
    border: 1px solid var(--accent-color);
    border-radius: 14px;
    max-width: 560px;
    width: 95%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.trn-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--accent-color);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-color);
}
.trn-modal-close {
    border: none;
    background: transparent;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    line-height: 1;
    padding: 0 0.25rem;
}
.trn-modal-close:hover {
    color: var(--text-color);
}
.trn-modal-body {
    padding: 0.75rem 1rem;
    overflow-y: auto;
    flex: 1;
}
.trn-modal-body p {
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-color);
    line-height: 1.5;
}
.trn-modal-body .trn-keybind-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}
.trn-modal-body .trn-keybind-row label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-color);
    min-width: 80px;
}

/* ── Play-page topbar (shared by inspection2 & infinite_f2l) ─ */
.ins2-dl-topbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    position: relative;
    width: 100%;
    box-sizing: border-box;
    flex-wrap: wrap;
}
.ins2-dl-back-btn {
    border: 1px solid var(--accent-color);
    background: var(--card-bg);
    color: var(--accent-color);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.3rem 0.65rem;
    border-radius: 6px;
    transition: 150ms ease;
    white-space: nowrap;
}
.ins2-dl-back-btn:hover {
    background: rgba(var(--accent-color-rgb), 0.08);
    border-color: var(--accent-color);
}

/* ── Button style for sat- prefix (alg_trainer2 style) ───── */
.sat-settings-btn {
    padding: 0.35rem 0.6rem;
    border: 2px solid var(--accent-color);
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: 150ms ease;
    font-family: inherit;
    line-height: 1.4;
}
.sat-settings-btn:hover:not(:disabled) {
    border-color: rgba(var(--accent-color-rgb), 0.4);
}
.sat-settings-btn.active {
    border-color: var(--accent-color);
    color: #fff;
    background: var(--accent-color);
}
.sat-settings-btn.sat-disabled,
.sat-settings-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button grid (multi-option / radio-like) — try fit one line, wrap if needed */
.sat-settings-btn-grid {
    display: flex;
    flex-wrap: wrap;
    max-width: 420px;
    gap: 1px;
}
.sat-settings-btn-grid .sat-settings-btn {
    border-radius: 0;
    flex: 0 0 auto;
    text-align: center;
    white-space: nowrap;
}
.sat-settings-btn-grid .sat-settings-btn:first-child {
    border-radius: 6px 0 0 0;
}
.sat-settings-btn-grid .sat-settings-btn:last-child {
    border-radius: 0 0 6px 0;
}

/* Sub-mode selector (button grid) */
.sat-submode-grid {
    display: flex;
    margin-bottom: 0.5rem;
    width: 100%;
}
.sat-submode-grid .sat-settings-btn {
    border-radius: 0;
    margin-left: -1px;
    flex: 1;
}
.sat-submode-grid .sat-settings-btn:first-child {
    border-radius: 6px 0 0 6px;
    margin-left: 0;
}
.sat-submode-grid .sat-settings-btn:last-child {
    border-radius: 0 6px 6px 0;
}
.sat-submode-grid .sat-settings-btn.active {
    border-color: var(--accent-color);
    background: var(--accent-color);
    color: #fff;
}