/* ─── Tạo Dàn Đề Page Stylesheet (Clean Premium Theme) ────────────────────── */

.tool-container {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

/* Title styling */
.tool-section-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: 8px;
}

/* Numbers grid layout for Đầu/Đuôi/Tổng/Chạm */
.digit-selector-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-bottom: var(--space-md);
}

@media (min-width: 576px) {
    .digit-selector-grid {
        grid-template-columns: repeat(10, 1fr);
    }
}

.digit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.digit-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
    background: var(--color-primary-light);
}

.digit-btn.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-color: var(--color-primary-dark);
    color: #ffffff;
    box-shadow: var(--shadow-primary);
}

/* Quick combo buttons (Bộ số, kép, chẵn lẻ...) */
.combo-btn-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--space-md);
}

.combo-btn {
    padding: 6px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.combo-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.combo-btn.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

/* Tab styled like glassmorphism */
.tool-nav-tabs {
    border-bottom: 2px solid var(--color-border-light);
    margin-bottom: var(--space-md);
    gap: 4px;
}

.tool-nav-tabs .nav-link {
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    padding: 10px 16px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    transition: all var(--transition-fast);
    position: relative;
}

.tool-nav-tabs .nav-link:hover {
    color: var(--color-primary);
    background: var(--color-border-light);
}

.tool-nav-tabs .nav-link.active {
    color: var(--color-primary-dark);
    background: transparent;
}

.tool-nav-tabs .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-pill);
}

/* Output card right side */
.result-sticky-card {
    position: sticky;
    top: var(--space-lg);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--color-primary-light);
    overflow: hidden;
    margin-bottom: var(--space-xl);
}

.result-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #ffffff;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.result-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    gap: 8px;
}

.counter-badge {
    background: var(--gradient-gold);
    color: var(--color-dark-surface);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-extrabold);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    box-shadow: 0 3px 6px rgba(255, 179, 0, 0.3);
}

.result-body {
    padding: var(--space-lg);
}

.result-textarea {
    width: 100%;
    height: 180px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px;
    font-family: var(--font-font-base);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-md);
    line-height: 1.6;
    letter-spacing: 0.5px;
    color: var(--color-text);
    background: var(--color-bg);
    resize: none;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
}

.result-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #ffffff;
}

.action-btn-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-top: var(--space-md);
}

.copy-btn {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: var(--shadow-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(229, 57, 53, 0.4);
}

.reset-btn {
    background: var(--color-bg);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.reset-btn:hover {
    background: var(--color-border-light);
    color: var(--color-text);
}

/* Grid layout for 3D/4D combos */
.input-three-four {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Wizard style step labels */
.step-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: var(--font-weight-extrabold);
    font-size: var(--font-size-sm);
    color: var(--color-primary-dark);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    color: #ffffff;
    border-radius: 50%;
    font-size: 11px;
    font-weight: var(--font-weight-extrabold);
    box-shadow: var(--shadow-primary);
}

/* Premium Form Controls */
.tool-control-premium {
    width: 100%;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    background: var(--color-bg);
    transition: all var(--transition-base);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.tool-control-premium:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

/* Advanced filter layouts */
.filter-box-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

@media (min-width: 768px) {
    .filter-box-container {
        grid-template-columns: 1fr 1fr;
    }
}

.filter-textarea-premium {
    width: 100%;
    height: 120px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    background: var(--color-bg);
    resize: none;
    transition: all var(--transition-base);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.filter-textarea-premium:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px var(--color-primary-light);
}

/* Glowing primary generate button for 3D/4D */
.generate-btn-premium {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border: none;
    border-radius: var(--radius-md);
    padding: 14px 28px;
    font-weight: var(--font-weight-extrabold);
    font-size: var(--font-size-md);
    color: #ffffff !important;
    box-shadow: var(--shadow-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.generate-btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(229, 57, 53, 0.4);
}

/* High end operation buttons in Tab 4 */
.op-btn-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.op-btn {
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 20px;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xs);
    color: #ffffff !important;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex: 1;
    min-width: 220px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.op-btn:hover {
    transform: translateY(-2px);
    color: #ffffff !important;
}

.op-btn-blue {
    background: linear-gradient(135deg, #1e88e5 0%, #1565c0 100%);
    box-shadow: 0 4px 10px rgba(21, 101, 192, 0.25);
}
.op-btn-blue:hover {
    box-shadow: 0 6px 16px rgba(21, 101, 192, 0.45);
}

.op-btn-red {
    background: linear-gradient(135deg, #e53935 0%, #c62828 100%);
    box-shadow: 0 4px 10px rgba(198, 40, 40, 0.25);
}
.op-btn-red:hover {
    box-shadow: 0 6px 16px rgba(198, 40, 40, 0.45);
}

.op-btn-orange {
    background: linear-gradient(135deg, #f4511e 0%, #d84315 100%);
    box-shadow: 0 4px 10px rgba(216, 67, 21, 0.25);
}
.op-btn-orange:hover {
    box-shadow: 0 6px 16px rgba(216, 67, 21, 0.45);
}

.op-btn-green {
    background: linear-gradient(135deg, #43a047 0%, #2e7d32 100%);
    box-shadow: 0 4px 10px rgba(46, 125, 50, 0.25);
}
.op-btn-green:hover {
    box-shadow: 0 6px 16px rgba(46, 125, 50, 0.45);
}

/* ─── Quay Thử Xổ Số Premium Section ────────────────────────────────── */
.qt-section {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    padding: var(--space-lg);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.qt-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--color-border-light);
    padding-bottom: 12px;
    margin-bottom: var(--space-lg);
    gap: 12px;
}

.qt-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
}

.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.1);
}

.live-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: livePulse 1.2s infinite;
}

@keyframes livePulse {
    0% { transform: scale(0.85); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.85); opacity: 0.5; }
}

.qt-date-info {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 600;
}

.qt-control-panel {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

@media (min-width: 992px) {
    .qt-control-panel {
        grid-template-columns: 2fr 3fr;
    }
}

/* Spin button */
.qt-play-btn-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.qt-play-btn {
    flex: 1;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #ffffff !important;
    border: none;
    border-radius: var(--radius-md);
    padding: 14px 28px;
    font-weight: var(--font-weight-extrabold);
    font-size: var(--font-size-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    box-shadow: var(--shadow-primary);
    transition: all var(--transition-base);
    text-transform: uppercase;
}

.qt-play-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 57, 53, 0.45);
}

.qt-mute-btn {
    width: 52px;
    height: 52px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.qt-mute-btn:hover {
    background: var(--color-border-light);
    color: var(--color-text);
}

/* Show mode and highlight settings */
.qt-settings-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    justify-content: center;
}

.qt-mode-group {
    display: flex;
    gap: 6px;
}

.qt-mode-btn {
    flex: 1;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.qt-mode-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.qt-mode-btn.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
}

/* Digit highlight buttons 0-9 */
.qt-hl-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-text-secondary);
    margin-right: 8px;
    text-transform: uppercase;
}

.qt-hl-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.qt-hl-btn {
    width: 32px;
    height: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.qt-hl-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.qt-hl-btn.active {
    background: #ffb300;
    border-color: #ffb300;
    color: var(--color-dark-surface);
    font-weight: var(--font-weight-extrabold);
    box-shadow: 0 3px 6px rgba(255, 179, 0, 0.35);
}

/* The Grid Board for drawn prizes - Premium Redesign */
.lottery-board-wrapper {
    background: #ffffff;
    border-radius: 14px;
    border: 1px solid var(--color-border);
    padding: 20px;
    margin-bottom: var(--space-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.prize-row-flex {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--color-border);
    margin-bottom: -1px;
    background: #ffffff;
    min-height: 60px;
    position: relative;
    transition: all 0.25s ease;
}

.prize-row-flex:first-child {
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
}

.prize-row-flex:last-child {
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    margin-bottom: 0;
}

.prize-label {
    width: 120px;
    background: #fcfcfc;
    border-right: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    text-align: center;
    padding: 12px;
    flex-shrink: 0;
    letter-spacing: 0.5px;
}

.prize-numbers {
    flex-grow: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    gap: 16px;
}

.prize-number-box {
    font-family: var(--font-font-base);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-text);
    padding: 8px 24px;
    border-radius: 8px;
    background: #f8fafc;
    border: 1px solid var(--color-border-light);
    min-width: 110px;
    text-align: center;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 2px;
    box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.02);
}

.prize-number-box.spinning {
    color: var(--color-primary) !important;
    background: var(--color-primary-light) !important;
    border-color: rgba(229, 57, 53, 0.3) !important;
    animation: numShake 0.12s infinite alternate;
}

@keyframes numShake {
    0% { transform: translateY(-1.5px) scale(1.02); }
    100% { transform: translateY(1.5px) scale(0.98); }
}

.prize-number-box.drawn {
    background: #ffffff;
    border-color: var(--color-border);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.03), 0 2px 4px rgba(0, 0, 0, 0.01);
    animation: drawBounce 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes drawBounce {
    0% { transform: scale(0.7); opacity: 0; }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); opacity: 1; }
}

.prize-number-box.highlighted {
    background: #ffb300 !important;
    color: var(--color-dark-surface) !important;
    border-color: #ffb300 !important;
    box-shadow: 0 4px 12px rgba(255, 179, 0, 0.45) !important;
    transform: scale(1.06);
    font-weight: 900;
}

/* Special Prize Custom Styling */
.prize-db {
    background: linear-gradient(135deg, #fffbeb 0%, #fff1f2 100%) !important;
}

.prize-db .prize-label {
    background: #ffebee !important;
    color: #e53935 !important;
    font-weight: 900;
    border-right: 1px solid var(--color-border) !important;
}

.prize-number-box-db {
    color: #e53935 !important;
    font-size: 1.8rem !important;
    font-weight: 900 !important;
    letter-spacing: 3px !important;
    padding: 8px 30px !important;
    border: 1px solid rgba(229, 57, 53, 0.25) !important;
    border-radius: 8px !important;
    background: #ffffff !important;
    text-shadow: none !important;
}

.prize-number-box-db.spinning {
    color: #e53935 !important;
    background: #ffebee !important;
    border-color: rgba(229, 57, 53, 0.3) !important;
}

.prize-number-box-db.highlighted {
    background: #ffb300 !important;
    color: var(--color-dark-surface) !important;
    border-color: #ffb300 !important;
    box-shadow: 0 8px 24px rgba(255, 179, 0, 0.5) !important;
}

/* Custom G1 styling */
#g1-box-0 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
    background: #ffffff;
    padding: 8px 28px;
}

/* Mobile responsive fixes for the board */
@media (max-width: 576px) {
    .prize-row-flex {
        flex-direction: column;
        align-items: stretch;
        min-height: auto;
    }
    
    .prize-label {
        width: 100% !important;
        padding: 8px !important;
        border-right: none !important;
        border-bottom: 1px solid var(--color-border-light) !important;
        font-size: 11px;
    }
    
    .prize-numbers {
        padding: 12px !important;
        gap: 8px !important;
    }
    
    .prize-number-box {
        font-size: 1.15rem !important;
        padding: 6px 14px !important;
        min-width: 80px !important;
        letter-spacing: 1px !important;
    }
    
    .prize-number-box-db {
        font-size: 1.6rem !important;
        padding: 8px 24px !important;
        letter-spacing: 3px !important;
    }
    
    #g1-box-0 {
        font-size: 1.3rem !important;
        padding: 6px 20px !important;
    }
}

/* Head/Tail Statistics Table Layout */
.qt-stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .qt-stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.qt-stats-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.qt-stats-title {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 16px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-text);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
}

.qt-stats-table {
    width: 100%;
    border-collapse: collapse;
}

.qt-stats-table th {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-extrabold);
    text-transform: uppercase;
    padding: 10px 12px;
    border-bottom: 2px solid var(--color-border-light);
    text-align: center;
}

.qt-stats-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    font-weight: bold;
    text-align: center;
}

.qt-stats-table tr:last-child td {
    border-bottom: none;
}

.digit-col {
    width: 60px;
    font-weight: var(--font-weight-extrabold) !important;
    background: var(--color-bg);
    border-right: 1px solid var(--color-border-light);
    color: var(--color-primary-dark) !important;
}

.result-loto-span {
    display: inline-block;
    background: var(--color-bg);
    color: var(--color-text);
    font-weight: var(--font-weight-extrabold);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    margin: 2px;
    border: 1px solid var(--color-border-light);
    font-size: var(--font-size-xs);
    transition: all var(--transition-fast);
}

.result-loto-span.db-loto {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 2px 4px rgba(229, 57, 53, 0.15);
}

.result-loto-span.highlighted {
    background: #ffb300;
    color: var(--color-dark-surface);
    border-color: #ffb300;
    font-weight: var(--font-weight-extrabold);
}

/* Custom Premium Rotating Spinner */
.qt-spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(229, 57, 53, 0.15);
    border-top: 2.5px solid var(--color-primary);
    border-radius: 50%;
    display: inline-block;
    vertical-align: middle;
    animation: qtSpin 0.9s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes qtSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}